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Carrier 48TCA04---A12 User's Manual

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3. ODOQDOOOQOOQOOQOOQOOQOQODQDOOQOD NZ LA CO Coco m 1CO CO CO CO C9 SENSOR LOCATION N Tk ii T ER fE e LLL ANT i 70O O C08259 C08261 Fig 85 48TC A04 Outdoor Circuiting Fig 87 48TC A07 Outdoor Circuiting i LI f j X A Pm i E GET Ba A SENSOR OCATION LE SENSOR d LOCATION 4 cw DO om DI TI TE g V ETA IT I aid CREED R C08260 C08262 Fig 86 48TC A05 06 Outdoor Circuiting Fig 88 48TC A08 Outdoor Circuiting 105 APPENDIX VI cont MOTORMASTER SENSOR LOCATIONS a ICH E AN A a l LE co iu Ki SENSOR OCATION L d l e C08263 Fig 89 48TC A09 12 Outdoor Cir
4. T Co8442 Fig 39 OATL Connections Troubleshooting Heating System Refer to Table 13 and Table 14 for additional troubleshooting topics 31 48TC Table 13 Heating Service Analysis PROBLEM CAUSE REMEDY Burners Will Not Ignite Misaligned spark electrodes Check flame ignition and sensor electrode positioning Adjust as needed No gas at main burners Check gas line for air purge as necessary After purging gas line of air allow gas to dissipate for at least 5 minutes before attempting to relight unit Check gas valve Water in gas line Drain water and install drip leg to trap water No power to furnace Check power supply fuses wiring and circuit breaker No 24 v power supply to control circuit Check transformer Transformers with internal overcurrent protection require a cool down period before resetting Miswired or loose connections Check all wiring and wire nut connections Burned out heat anticipator in thermostat Replace thermostat Broken thermostat wires Run continuity check Replace wires if necessary Inadequate Heating Dirty air filter Clean or replace filter as necessary Gas input to unit too low Check gas pressure at manifold Clock gas meter for input If too low increase manifold pressure or replace with correct orifices Unit undersized for application Replace with proper unit
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6. AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option 1500 1247 0 98 1320 1 13 1390 1 28 1625 1276 1 10 1348 1 24 1416 1 40 1750 1 38 1875 2000 2125 E 2250 2375 2500 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 48TC 06 1 Phase 5 Ton Vertical Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1500 848 0 42 968 0 55 1069 0 68 1158 0 80 1238 0 94 1625 897 0 51 1013 0 65 1111 0 79 1198 0 93 1277 1 07 1750 947 0 61 1059 0 76 1155 0 91 1240 1 06 1318 1 21 1875 997 0 72 1105 0 89 1283 1 21 1359 2000 1153 1 03 1 37 2125 2250 2375 2500 AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option Field Supplied Drive 1500 1312 1 07 1380 1 20 1445 1 34 1506 1 48 1625 1418 1 85 x E E 2 1750 1875 2000 2125 2250 2375 2500 NOTE For more information see General Fan Performance Notes on page 87 Boldface i
7. NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part number KR11AG006 and belt part number KR30AE039 2 Recommend using field supplied motor pulley part number KR11HY161 and belt part number KR30AE035 88 APPENDIX III FAN PERFORMANCE cont 48TC 04 3 Phase 3 Ton Horizontal Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 900 553 0 14 681 0 22 782 0 32 870 0 42 948 0 53 975 575 0 16 700 0 25 801 0 35 888 0 46 965 0 57 1050 597 0 18 720 0 28 820 0 38 906 0 49 983 0 61 1125 620 0 21 741 0 31 839 0 42 925 0 54 1001 0 66 1200 643 0 23 762 0 34 944 0 58 1020 0 71 1275 667 0 27 783 0 38 963 0 63 1038 0 76 1350 691 0 30 805 0 42 983 0 68 1057 0 82 1425 715 0 34 827 0 47 1002 0 74 1076 0 88 1500 740 0 38 849 0 52 1023 0 80 1096 0 95 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 900 1019 0 64 1084 0 76 1146 0 89 1203 1 02 1258 1 16 975 1036 0 69 1101 0 81 1162 0 94 1219 1 08 1274 1 22 1050 1053 0 74 1118 0 86 1179 1 00 1236 1 14 1290
8. Door Switch The Door Switch function is designed to disable mechanical heating and cooling outputs when the REMOCC contact input is closed in the ON state after a programmed time delay The fan will continue to operate based on the current mode and the ASHRAE 90 1 Supply Fan setting The delay is programmable from 2 to 20 minutes by setting the Remote Cont Door Switch decision in the SERVICE table to a value equal to the number of minutes desired When the contact is open in the OFF state the PremierLink controller will resume normal temperature control This application is designed for use in schools or other public places where a door switch can be installed to monitor the opening of a door for an extended period of time The controller will disable mechanical cooling and heating when the door is open for a programmed amount of time This function can also be used to monitor a high condensate level switch when installed on a water source heat pump to disable mechanic cooling in case of a plugged evaporator condensate pan drain Linkage The Linkage function in the PremierLink controller is available for applications using a Linkage thermostat or the 3V control system If using the Linkage thermostat both the PremierLink controller and the stat must be on the same CCN bus When used as the air TI 48TC source for a 3V control system the PremierLink controller is not required to be on the same CCN bus but it is rec
9. Holding the test magnet against the sensor housing for more than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses Table 2 Dirty LED Test FLASHES DESCRIPTION 1 0 25 dirty Typical of a newly installed detector 2 25 50 dirty 3 51 75 dirty 4 76 99 dirty Dirty Sensor Test Procedure 1 Hold the test magnet where indicated on the side of the sensor housing for two seconds 2 Verify that the sensor s Dirty LED flashes A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern Changing the dirty sensor test operation will put the detector into the alarm state and activate all automatic alarm responses Before changing dirty sensor test operation disconnect all auxiliary equipment from the controller and notify the proper authorities if connected to a fire alarm system Changing the Dirt Sensor Test By default sensor dirty test results are indicated by e The sensor s Dirty LED flashing The controller s Trouble LED flashing The controller s supervision relay contacts toggle The operation of a sensor s dirty test can be changed so that the controller s supervision relay is not used to indicate test results When two detectors are connected to a controller sensor dirty test operation on both sensors must be configured to operate in the same manner To Config
10. ing operation in both high stage and low stage opera tion if so equipped Observe burner flames to see if they are blue in appearance and that the flames are approximately the same for each burner SEE DETAIL C 4 10 Turn off unit remove pressure manometer and re place the 1 8 in pipe fitting on the gas manifold See Fig 32 Limit Switch Remove blower access panel Limit switch is located on the fan deck See Fig 28 Burner Ignition Unit is equipped with a direct spark ignition 10046 lockout system Integrated Gas Unit Controller IGC is located in the control box See Fig 34 The IGC contains a self diagnostic LED light emitting diode A single LED see Fig 38 on the IGC provides a visual display of operational or sequential problems when the power supply is uninterrupted When a break in power occurs the IGC will be reset resulting in a loss of fault history and the indoor evaporator fan ON OFF times will be reset The LED error code can be observed through the viewport During servicing refer to the label on the control box cover or Table 8 for an explanation of LED error code descriptions If lockout occurs unit may be reset by interrupting power supply to unit for at least 5 seconds LOWHEAT 72 000 BTUH INPUT AND 60 000 BTUH INPUT SEE DETAILE MEDIUM AND HIGH HEAT 115 000 BTUH INPUT 150 000 BTUH INPUT 90 000BTUH INPUT AND 120 000 BTUH IN
11. 7 The evaporator fan motor will turn off in 45 seconds after the thermostat temperature is satisfied 8 Adjust airflow to obtain a temperature rise within the range specified on the unit nameplate NOTE The default value for the evaporator fan motor on off delay is 45 seconds The Integrated Gas Unit Controller IGC modifies this value when abnormal limit switch cycles occur Based upon unit operating conditions the on delay can be reduced to 0 seconds and the off delay can be extended to 180 seconds When one flash of the LED is observed the evaporator fan on off delay has been modified If the limit switch trips at the start of the heating cycle during the evaporator on delay the time period of the on delay for the next cycle will be 5 seconds less than the time at which the switch tripped Example If the limit switch trips at 30 seconds the evaporator fan on delay for the next cycle will occur at 25 seconds To prevent short cycling a 5 second reduction will only occur if a minimum of 10 minutes has elapsed since the last call for heating The evaporator fan off delay can also be modified Once the call for heating has ended there is a 10 minute period during which the modification can occur If the limit switch trips during this period the evaporator fan off delay will increase by 15 seconds A maximum of 9 trips can occur extending the evaporator fan off delay to 180 seconds To restore the original default value
12. 56 Table 27 EconoMi er IV Input Output Logic INPUTS OUTPUTS Demand Cantal Enthalpy Compressor N Terminalt Ventilation DCV Outdoor Retum Y2 Stage Stage Occupied Unoccupied 1 2 Damper High On On On On Free Cooling LED Low On Off On Off Minimum position Closed Below set Off Off Off Off Off DCV LED Off ER On On On off Modulating between Modulating be Free Coolina LED Hiah min position and full tween closed and Free om Hi On Of Off Off open full open Off Off Off Off Minimum position Closed High On Un On On Modulatingtt between EE Ge Free Cooling LED Low On Off On Off min position and DCV DCV Above set Off Off O of Off maximum maximum Corer OW Low On On On Off Free Cooling LED High On Off Off Off Modulating Modulatingttt On Off Off Off Off Forsingle enthalpy control the module compares outdoor enthalpy to the ABCD setpoint t Power at N terminal determines Occupied Unoccupied setting 24 vac Occupied no power Unoccupied Modulation is based on the supply air sensor signal tt Modulation is based on the DCV signal Modulation is based on the greater of DCV and supply air sensor signals between minimum position and either maximum position DCV or fully open supply air signal ttt Modulation is based on the greater of DCV and supply air sensor signa
13. 94 APPENDIX III FAN PERFORMANCE cont 48TC 08 3 PHASE 7 5 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 2250 505 0 52 586 0 73 657 0 97 722 1 22 782 1 50 2438 533 0 62 610 0 85 679 1 09 742 1 36 800 1 65 2625 562 0 74 635 0 98 701 1 23 762 819 1 81 2813 591 0 88 661 1 13 725 1 39 783 1 68 839 1 98 3000 621 1 03 688 1 29 749 1 57 806 1 87 859 2 18 3188 652 1 21 715 1 48 774 1 77 829 2 07 881 2 40 3375 682 1 40 743 1 68 800 1 98 853 2 30 903 2 63 3563 713 1 61 1 91 826 2 22 878 2 55 927 2 89 3750 745 1 85 801 2 15 853 2 48 9038 2 82 951 3 18 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 2250 838 1 81 891 2 12 941 2 46 988 2 82 1033 3 19 2438 854 1 96 906 2 28 955 2 63 1001 2 99 1046 3 37 2625 872 2 12 922 2 46 970 2 81 1016 3 17 1060 3 56 2813 890 2 31 940 2 65 986 3 01 1031 3 38 1074 3 77 3000 910 2 51 958 2 86 1004 3 23 1048 3 61 1090 4 01 3188 930 2 74 977 3 10 1022 3 47 1065 3 86 3375 951 2 99 997 3 35 1041 3 74 1083 4 13 3563 973 3 26 1018 3 63 1061 4 02 1143 4 85 3750 996 3 55 1040 3 93 1082 4 34 1162 5 18 NOTE For mo
14. Direct 2 Direct 2 Direct Motor HP RPM 1 4 1100 1 4 1100 1 4 1100 Fan diameter in 22 22 22 Filters RA Filter Size in 4 16x20x2 4 20x20x2 4 20x20x2 OA inlet screen Size in 1 20x24x1 1 20x24x1 1 20x24x1 84 APPENDIX II PHYSICAL DATA cont Physical Data Heating 3 6 TONS 48TC 04 48TC 05 48TC 06 48TC 07 Gas Connection of Gas Valves 1 1 1 1 Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT Nat gas supply line press in w g PSIG LP supply line press in w g PSIG Heat Anticipator Setting Amps 5 13 0 18 0 47 11 13 0 40 0 47 5 13 0 18 0 47 11 13 0 40 0 47 5 13 0 18 0 47 11 13 0 40 0 47 5 13 0 18 0 47 11 13 0 40 0 47 1st stage 0 14 0 14 0 14 0 14 2nd stage 0 14 0 14 0 14 0 14 Natural Gas Heat of stages of burners total 1 2 1 2 1 2 1 2 3 Rollout switch opens Closes 195 115 195 115 195 115 195 115 Temperature rise 25 55 25 55 25 55 25 55 of stages of burners total 10r2 3 1 8 1 8 1 3 a Rollout switch opens Closes 195 115 195 115 195 115 195 115 Temperature rise 55 85 35 65 35 65 35 65 E of stages of burners total 10r2 3 10r2 3 10r2 3 e Rollout switch opens Closes 195 115 195 115 195 115 Temperature rise 50 80 50 80 50 80 Liquid Propane Heat of stages of burners total 1 2 1 2 1 2 1 2
15. F 4 10 16 21 27 32 SUCTION LINE TEMPERATURE C 48TM500231 20 C08203 Fig 12 Cooling Charging Charts 48TC COOLING CHARGING CHARTS cont 4 TON CHARGING CHART Fig 12 cont Cooling Charging Charts R410A REFRIGERAN OUTDOOR TEMP 1103 60 F c 115 46 1034 50 105 41 a 8 95 35 S 965 2 140 85 29 pe i 75 24 896 130 E E 65 18 S 827 120 38 13 2 45 7 758 Z 110 690 S 100 El 621 90 LT 552 80 20 30 40 50 60 70 80 90 SUCTION LINE TEMPERATURE F 7 1 4 10 16 21 27 32 SUCTION LINE TEMPERATURE C 48TM500232 20 C08204 5 TON CHARGING CHART R410A REFRIGERANI 1103 160 OUTDOOR TEMP Be 115 A8 1034 150 105 41 a zi 95 35 oO z 965 2 40 d 5o 2 15 24 a 30 g 896 E 65 18 ae 2 120 55 13 E a A 45 7 o 158 d 10 2 a 690 L 100 z o 621 90 O 2 35 45 55 65 15 85 SUCTION TEMP F 2 7 3 8 24 30 SUCTION LINE TEMPERATURE C 48TM500233 20 C08228 COOLING CHARGING CHARTS cont 6 TON CHARGING CHART R410A REFRIGERANT OUTDOOR TEMP E TDOOR TEN 1172 170 115 46 a we 105 41 1034 2 150 s 35 35 a
16. Table 18 Thermostat Mode TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL 1 RAT SEN Analog 10k thermistor 2 G Discrete 24VAC 3 RAT SEN Analog 10k thermistor 4 Y1 Discrete 24VAC 5 6 Y2 Discrete 24VAC 7 LOOP PWR Analog 24VDC 8 Wi Discrete 24VAC 9 IAQ SEN Analog 4 20mA 10 W2 Discrete 24VAC 11 IAQ COM OAQ COM RH COM Analog 4 20mA 12 CCN RED Digital 5 DC 13 OAQ SEN RH SEN Analog 4 20mA 14 CCN Gnd WHT Digital 5 DC 15 AUX OUT Power Exhaust Output Discrete 24VAC 16 CCN BLK Digital 5VDC LEGEND CCN Carrier Comfort Network communication bus RH Relative Humidity G Thermostat Fan Wi Thermostat Heat Stage 1 IAQ Indoor Air Quality CO2 w2 Thermostat Heat Stage 2 OAQ Outdoor Air Quality CO3 Y1 Thermostat Cool Stage 1 RAT Return Air Temperature Y2 Thermostat Cool Stage 2 Connect T 56 See Fig 45 for T 56 internal connections Install a jumper between SEN and SET terminals as illustrated Connect T 56 terminals to TB1 terminals 1 3 and 5 see Fig 46 e DISIVIG IO CCN COM E BLKO 1 j AVAN N NI a apa E DT SENSOR WIRING JUMPER TERMINALS AS SHOWN C08
17. 85 29 e 2 e Le 15 24 896 130 I 65 18 2 ko Less 55 13 a 158 110 45 7 S 5 z 621 90 483 10 30 40 50 60 70 80 90 SUCTION LINE TEMPERATURE F 1 10 16 21 27 32 SUCTION LINE TEMPERATURE C 48TM500234 20 C08229 7 5 TON CHARGING CHART R410A REFRIGERANT 72 170 SUTDOOR TEMP 1103 160 n5 LE 105 41 E 95 35 2 1034 150 85 S 29 2 E 65 18 S 965 e 140 55 113 896 S 130 45 11 Z 827 120 z 158 110 690 S i00 i 621 90 552 80 20 30 40 50 60 10 80 90 SUCTION LINE TEMPERATURE F 7 1 4 10 16 21 21 32 SUCTION LINE TEMPERATURE C 48TM500885 20 C08437 Fig 12 cont Cooling Charging Charts 11 48TC COOLING CHARGING CHARTS cont 8 5 TON CHARGING CHART R410A REFRIGERANT 1241 180 OUTDOOR o TEMP 1172 170 PPA 105 41 z 1103 160 Hp E 3 75 24 2 1034 150 65 18 e 965 g 140 w 2 55 13 B 896 130 45 4 3 w 821 120 E E 158 S 110 2 690 100 621 90 552 80 20 30 40 50 60 70 80 90 SUCTION LINE TEMPERATURE F 7 1 4 10 16 21 21 32 SUCTION LINE TEMPERATURE C 48TM500886 2 0 10 TON CHARGING CHART R410A REFRIGERANT OUTDOOR TEMP 1241 180 po C 115 46 a 105 41 Z1103 _ 160 83 7 29 2 8 75 24 S e 65 18 965 140 a 55 13 a kn 45 1 1 827 120 E z 690 S100 552 80 20 30 40 50 60 70 80 90
18. Check gas 7 Rollout Switch Lockout Off Power reset valve operation Check induced draft Flashes Indoor fan and inducer blower wheel is properly secured to motor On shaft 8 IGC has sensed internal hardware or soft Flashes Internal Control Lockout No gas heating Power reset ware error If fault is not cleared by reset ting 24 v power replace the IGC 9 Temporary Software Ne Has haatin 1 hour auto reset or Electrical interference is disrupting the Flashes Lockout g 9 power reset IGC software LEGEND IGC Integrated Gas Unit Control LED Light Emitting Diode NOTES 1 There is a 3 second pause between alarm code displays 2 If more than one alarm code exists all applicable alarm codes will be displayed in numerical sequence 3 Alarm codes on the IGC will be lost if power to the unit is interrupted 33 48TC HVAC SENSOR INPUTS SPACE TEMP SET POINT SUPPLY AIR TEMP f OUTDOOR TEMP a INDOOR AIR QUALITY OUTDOOR AIR QUALITY a DUAL MODE SENSOR STAT REMOTE OCCUPANCY G 7 COMP SAFETY Y1 4 FIRE SHUTDOWN v2 27 B SUPPLY FAN STATUS W1 4 NOT USED W2 ENTHALPY STATUS ENTH M gU od EBD Goniri sistem Part Number 33CSPREMLK lus 4 PremierLink zwen Sch CCN LEN NAVIGATOR 4 20MA INDOOR COMPR HEAT EXHAUST PORT PORT ECONOMIZER FANMOTOR 1 amp 2 LOW HIGH RVS VALVE OUTPUTS C08199 Fig 40 PremierLink Controller PREMIERLINK CONTROL Supply Air Te
19. FEous D a e E Hm XE L 1 ur eR mE SIE 7o im 2 ma KI 8 L Sei Kn n gt 0 01 2 onko t ou Lu A wig Ha KB ar x s ower P m 1 ES ul s Be quus ud tu anv 8023 f kerl 32 laon ossa n swim sy d i Ine Ai OLA O OLA 014 0 18 ARC 18 f MID Le Ee p izi TE gt wnd oL 038 pmoodon mme ga ee 2 MEC poem ee 3s ro 3 rans 3 ro Tou mous nmi sa n ip GE vum im L im 2 Sol Se a KOD dai Si SR 180d Ce SON 3 _ TT cm e I Fact ri uel 5 8 2 ET ao aeo eu eee WE SES AD 0 4 3 NO1140 8 We ais g mb pras i E H E 8 1 EH SI E sir Ei SOUS TOMS pyg Geo we SL nas ras Q1nnH ira aoon e SIIVYI LINIYII AJITdWIS Ol QuvOS TQNIWYJL 1v012V HOIVW LON S300 LNOQAVT OILVN3HOS QuvOS TVNINU3I JLON N3N39NVUUV LNINOdNOD und Ir ki f uv M0S 322V a bi GuvO8 IVNINBIL us um 200 s 4011 Tox wu fe 2 koki a L 44 Table 21 RTU MP Controller Inputs and Outputs BACnet OBJECT CONNECTION PIN POINT NAME NAME TYPE OF UO NUMBERS INPUTS Space Temperature Sensor sptsens Al 10K Thermistor J20 1 2 Supply Air Temperature sat Al 10K Thermistor J2 1 2 Local Outside Air Temperature Sensor oat
20. If the OAT rises above this threshold during heating then heating will not be allowed Factory Default 65 F Range 49 95 F 69 48TC Inputs NOTE For installation of inputs and field installed accessories refer to the appropriate sections Input 3 This input is a discrete input and can be configured to be one of five different inputs No Function Compressor Safety Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 3 is factory wired to pin J1 2 Field accessories get wired to its parallel pin J5 5 Do not connect inputs to both locations one function per input Factory Default 2 Compressor Safety and N O NOTE Compressor Safety input comes from the CLO board J1 2 is always factory wired to TB1 8 X terminal on the unit If the unit has a CLO board do not configure input 3 for anything but Compressor Safety Input 5 This input is a discrete input and can be configured to be one of five different inputs No Function Fire Shutdown Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 5 is factory wired to pin J1 10 Field accessories get wired to its parallel pin J5 3 Do not connect inputs to both locations one function per input Factory Default Fire Shutdown and N C NOTE Fire Shutdown input comes from TB4 7 J1
21. addresses are 1 8 and 16 then Max Masters would be set to MAC address 127 Each MS TP master node on the to 16 since this is the highest MS TP MAC address on network must have their Max Masters set to this same the network This property optimizes MS TP network value The default is 127 communications by preventing token passes and poll for Device Instance 0160001 1 PRGs loaded 1 PRGs running Module status Firmware sections validated in flash memory Boot16 H v2 06 001 Jun 19 2007 RTU MP DRIVER v2 09 050 Jun 26 2007 Reset counters 11 Power failures 0 Brownouts 18 Commanded warm boots 22 Commanded cold boots 0 System errors 0 Watchdog timeouts System error message history Type Specific Warning message history Information message history POWERUP BACnet reinitialize warmstart 06 29 07 10 49 40 Menu file not found 06 29 07 10 48 35 ARC156 reconfigurations during the last hour cleared upon reset Total ies Re ee t ee e 0 Initiated by this node 0 Core board hardware Type 147 board 34 manufactured on 05 14 2007 S N 21A740188N RAM 1024 kBytes FLASH 1024 kBytes type 3 Base board hardware Type 147 board 71 manufactured on 05 14 2007 S N RMP750037N Largest free heap space 65536 Database size 742082 used 352162 free 389920 Raw physical switches 0x01280000 Module Communications Network Protocol BACnet MSTP Master Network Baud Rate 9600 bps C07195 Fig
22. cutter and remove component from unit Carefully unsweat remaining tubing stubs when necessary Oil can ignite when exposed to torch flame Proceed as follows to inspect and prepare the unit for initial start up 1 Remove all access panels 2 Read and follow instructions on all WARNING CAUTION and INFORMATION labels attached to or shipped with unit 3 Make the following inspections a Inspect for shipping and handling damages such as broken lines loose parts or disconnected wires etc b Inspect for oil at all refrigerant tubing connec tions and on unit base Detecting oil generally indicates a refrigerant leak Leak test all refri gerant tubing connections using electronic leak detector halide torch or liquid soap solution c Inspect all field wiring and factory wiring con nections Be sure that connections are completed and tight Be sure that wires are not in contact with refrigerant tubing or sharp edges d Inspect coil fins If damaged during shipping and handling carefully straighten fins with a fin comb 4 Verify the following conditions a Make sure that condenser fan blade are correctly positioned in fan orifice See Condenser Fan Adjustment section for more details b Make sure that air filter s is in place c Make sure that condensate drain trap is filled with water to ensure proper drainage d Make sure that all tools and miscellaneous loose parts have been removed START
23. the controller The register address used in the 02 Ilegal Data Address query is not supported by the controller The Modbus Master has at tempted to write to a non exist ent register or a read only regis ter in the controller 04 Slave Device Failure Modbus 54 1 Verify that the BAS and controller are both set to speak the Modbus RTU protocol The protocol of the controller is set via SW3 switches 3 4 5 and 6 The protocol can also be verified by getting a Modstat of the controller through the BACview Hit the FN key and the key at the same time to pull up a Modstat Scroll to the bottom of the page and there is a section entitled Network Communications The active protocol and baud rate will be shown in this section Verify that the BAS and controller are set for the same baud rate The baud rate of the controller is set via SW3 switches 1 and 2 The baud rate can also be verified via the BACview by obtaining a Modstat see above Verify that the BAS is configured to speak 2 wire EIA 485 to the controller The BAS may have to con figure jumper or DIP switches on their end Verify that the BAS and the controller have the same communication settings 8 data bits No Parity and 1 stop bit Verify that the controller has a unique Modbus slave address The controller s Modbus slave address is set by its rotary address switches Verify that the BAS is us
24. 1 Make sure EconoMi er IV preparation procedure has been performed Set the Enthalpy potentiometer to A The Free Cool LED turns on The actuator should drive to between 20 and 8046 open Remove the 5 6 kilo ohm resistor and jumper T to T1 The actuator should drive fully open Remove the jumper across T and T1 The actuator should drive fully closed Return EconoMi er IV settings and wiring to normal after completing troubleshooting EconoMi er IV Troubleshooting Completion This procedure is used to return the EconoMi er IV to operation No troubleshooting or testing is done by performing the following procedure 1 2 3 oo 10 11 Disconnect power at TR and TRI Set enthalpy potentiometer to previous setting Set DCV maximum position potentiometer to previ ous setting Set minimum position DCV setpoint and exhaust po tentiometers to previous settings Remove 620 ohm resistor from terminals SR and Remove 1 2 kilo ohm checkout resistor from termin als SO and If used reconnect sensor from termin als SO and Remove jumper from TR to N Remove jumper from TR to 1 Remove 5 6 kilo ohm resistor from T and T1 Recon nect wires at T and TI Remove jumper from P to P1 Reconnect device at P and PI Apply power 24 vac to terminals TR and TRI WIRING DIAGRAMS See Fig 83 and Fig 84 for typical wiring diagrams 63 48TC q FIELD OO LDMOS
25. 1 28 1125 1071 0 79 1135 0 92 1196 1 06 1253 1 20 1307 1 35 1200 1089 0 84 1153 0 98 1213 1 12 1270 1 27 1324 1 42 1275 1107 0 90 1171 1 04 1231 1 19 1287 1 34 1341 1 50 1350 1126 0 96 1189 1 11 1249 1 26 1305 1 42 1358 1 58 1425 1144 1 03 1208 1 18 1267 1 34 1323 1 50 1376 1 66 1500 1163 1 10 1226 1 25 1285 1 41 1341 1 58 1394 1 75 NOTE For more information see General Fan Performance Notes on page 87 1 Recommend using field supplied drive part number KR11AG006 and belt part number KR30AE039 48TC 04 3 Phase 3 Ton Vertical Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 900 567 0 15 688 0 22 786 0 30 871 0 37 947 0 44 975 591 0 17 710 0 26 807 0 34 891 0 42 966 0 49 1050 615 0 20 732 0 29 828 0 38 911 0 47 985 0 55 1125 641 0 23 755 0 33 849 0 42 931 0 52 1005 0 61 1200 666 0 26 778 0 37 871 0 47 952 0 57 1025 0 67 1275 693 0 29 802 0 41 893 0 53 974 0 63 1046 0 74 1350 719 0 33 826 0 46 916 0 58 995 0 70 1067 0 81 1425 746 0 38 850 0 51 939 0 64 1017 0 76 1088 0 89 1500 773 0 42 0 57 963 0 70 1040 0 84 1110 0 96 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 900 1016 0 51 1080 0 57 1139 0 64 1195 0 71 1249 0 77 975 1034 0 57 1098 0 64 1157 0 72 1213 0 79 1266 0 86 1050 1053 0 63 1116 0 71 1176 0 79 1231 0
26. 1 and 2 The baud rate can also be verified via the BACview by obtaining a Modstat See Fig 67 3 Verify that the BAS is configured to speak 2 wire EIA 485 to the controller The BAS may have to con figure jumper or DIP switches on their end 4 Verify that the BAS and the controller have the same communication settings 8 data bits No Parity and 1 stop bit 5 Verify that the controller has a unique MAC address on the MS TP bus The controller s MS TP MAC ad dress is set by its rotary address switches 6 Verify proper wiring between the BAS and the con troller 7 Verify that the BAS is reading or writing to the proper BACnet objects in the controller Download the latest points list for the controller to verify 8 Verify that the BAS is sending his requests to the proper MS TP MAC address of our controller 9 Present the BAS company with a copy of our control ler s BACnet PICS so that they know which BACnet commands are supported See below 10 In certain situations it may be necessary to tweak the MS TP Protocol timing settings through the BAC view There are two settings that may be tweaked 52 Max Masters Defines the highest MS TP Master MAC master requests to non existent Master nodes i e in address on this MS TP network For example if there are the above example MAC address 16 would know to pass 3 master nodes on an MS TP network and their MAC the token back to MAC address 1 instead of counting up
27. 10 is always factory wired to TB4 7 Only change input 5s function if absolutely needed Input 8 This input is a discrete input and can be configured to be one of five different inputs No Function Enthalpy Switch Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 8 is factory wired to pin J2 6 Field accessories get wired to its parallel pin J5 1 Do not connect inputs to both locations one function per input Factory Default 2 No Function and N O Input 9 This input is a discrete input and can be configured to be one of five different inputs No Function Humidistat Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 9 is factory and field wired to pin J5 7 Do not connect inputs to both locations one function per input Factory Default Humidistat and N O Space Sensor Type This tells the controller what type of space sensor is installed to run the unit The three types that can be used are the T55 space sensor the T56 space sensor or the RS space sensor Factory Default 2 T55 Type Input 1 Function This input is an analog input and can be configured to be one of five different inputs No Sensor IAQ Sensor OAQ Sensor Space RH Sensor or Outdoor RH Sensor Input 1 is wired to pin J4 5 Factory Default 2 No Sensor Input 2 Functi
28. 10095 dirty 2 Determine which Dirty LED is flashing then clean that sensor assembly as described in the detector cleaning section Sensors Trouble LED is On 1 Check the sensor s Dirty LED If it is flashing the sensor is dirty and must be cleaned 2 Check the sensor s cover If it is loose or missing se cure the cover to the sensor housing 3 Replace sensor assembly Sensor s Power LED is Off 1 Check the controller s Power LED If it is off de termine why the controller does not have power and make the necessary repairs 2 Check the wiring between the sensor and the control ler If wiring is loose or missing repair or replace as required Table 3 Detector Indicators CONTROL OR INDICATOR DESCRIPTION Magnetic test reset switch the normal state Resets the sensor when it is in the alarm or trouble state Activates or tests the sensor when it is in Alarm LED Indicates the sensor is in the alarm state Trouble LED Indicates the sensor is in the trouble state Dirty LED Indicates the amount of environmental compensation used by the sensor flashing continuously 10096 Power LED Indicates the sensor is energized 21 48TC Controller s Power LED is Off 1 Make sure the circuit supplying power to the control ler is operational If not make sure JP2 and JP3 are set correctly on the controller before applying power 2 Verify that power is applied to the controlle
29. 1609 2 48 2500 1533 2 36 1591 2 54 1647 2 78 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part number KR11AZ506 motor pulley part number KR11HY191 and belt part number KR30AE042 48TC 06 3 Phase 5 Ton Vertical Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1500 848 0 42 968 0 55 1069 0 68 1158 0 80 1238 0 94 1625 897 0 51 1013 0 65 1111 0 79 1198 0 93 1277 1 07 1750 947 0 61 1059 0 76 1155 0 91 1240 1 06 1318 1 21 1875 997 0 72 1105 0 89 1283 1 21 1359 1 37 2000 1048 0 85 1153 1 03 1326 1 37 1401 1 54 2125 1100 1 00 1370 1 55 1444 2250 1415 1 75 2375 1460 1 96 2500 1576 2 41 AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 1500 1312 1 07 1380 1 20 1506 1 48 1564 1 62 1625 1350 1 21 1418 1 35 1542 1 64 1600 1 79 1750 1390 1 36 1457 1 51 1580 1 83 1637 1 98 1875 1559 1 86 1618 2 02 1675 2000 2 24 2125 2250 2375 2500 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend
30. 1st stage 0 14 0 14 0 14 0 14 2nd stage 0 14 0 14 0 14 0 14 Natural Gas Heat Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT of stages of burners total 1 2 1 2 1 2 1 2 3 Rollout switch opens Closes 195 115 195 115 195 115 195 115 x Temperature rise min max 25 55 25 55 25 55 25 55 Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT ei of stages of burners total 10r2 3 1 8 1 8 1 3 W Rollout switch opens Closes 195 115 195 115 195 115 195 115 z Temperature rise min max 55 85 35 65 35 65 35 65 Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT lI of stages of burners total 10r2 3 10r2 3 10r2 3 e Rollout switch opens Closes 195 115 195 115 195 115 r Temperature rise min max 50 80 50 80 50 80 Liquid Propane Heat Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT of stages of burners total 1 2 1 2 1 2 1 2 3 Rollout switch opens Closes 195 115 195 115 195 115 195 115 x Temperature rise min max 25 55 25 55 25 55 25 55 Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT a of stages of burners total 1or2 3 1or2 3 1or2 3 1or2 3 DI Rollout switch opens Closes 195 115 195 115 195 115 195 115 z Temperature rise min max 55 85 35 65 35 65 35 65 Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT I of stages of burners total 10r2 3 10r2 3 10r2 3 eo Rollout switch opens Closes 195 115 195 115 195 115 L Temperature rise min max 50 80 50 80
31. 3 Rollout switch opens Closes 195 115 195 115 195 115 195 115 Temperature rise 25 55 25 55 25 55 25 55 of stages of burners total 1or2 3 1or2 3 1or2 3 1or2 3 a Z Rollout switch opens Closes 195 115 195 115 195 115 195 115 Temperature rise 55 85 35 65 35 65 35 65 e of stages of burners total 10r2 3 10r2 3 10r2 3 e Rollout switch opens Closes 195 115 195 115 195 115 T Temperature rise 50 80 50 80 50 80 Low NO Gas Heat of stages of burners total 1 2 1 2 1 2 3 Rollout switch opens Closes 195 115 195 115 195 115 Temperature rise 20 50 20 50 20 50 of stages of burners total 1 3 1 3 1 3 2 Rollout switch opens closes 195 115 195 115 195 115 Temperature rise 30 60 30 60 30 60 X of stages of burners total 1 8 1 3 oO Rollout switch opens Closes 195 115 195 115 I Temperature rise 40 70 40 70 85 48TC APPENDIX II PHYSICAL DATA cont Physical Data Heating 7 5 10 TONS Gas Connection of Gas Valves Nat gas supply line press in w g PSIG LP supply line press in w g PSIG Heat Anticipator Setting Amps 48TC 04 48TC 05 48TC 06 48TC 07 1 4 13 0 18 0 47 11 13 0 40 0 47 1 4 13 0 18 0 47 11 13 0 40 0 47 1 4 13 0 18 0 47 11 13 0 40 0 47 1 4 13 0 18 0 47 11 13 0 40 0 47
32. 493 3000 914 321 503 311 473 321 493 4000 1219 331 503 311 483 331 493 5000 1524 331 514 311 483 331 503 6000 1829 341 514 311 483 341 503 7000 2134 351 514 321 493 351 509 8000 2438 36 524 331 493 36 514 9000 2743 372 524 341 509 37 514 10000 3048 38 524 351 503 38 524 11000 3353 39 534 36 514 39 524 12000 3658 141 534 372 514 141 534 13000 3962 142 544 38 524 142 534 14000 4267 143 544 40 534 t43 544 LEGEND NG Natural Gas As the height above sea level increases there is less oxygen per cubic ft of air Therefore heat input rate should be reduced at higher altitudes T Not included in kit May be purchased separately through dealer LP Liquid Propane 1 CRLPELEV001A00 2 CRLPELEVOO2AOO 3 CRLPELEV003A00 4 CRLPELEVOO4A00O 30 Table 12 Altitude Compensation A04 A06 Low NO Units 60 000 90 000 120 000 aeri rd BTUH Nominal BTUH Nominal m NG Orifice Size LP Orifice Size NG Orifice Size LP Orifice Size 0 2000 610 38 534 321 503 2000 610 39 544 33 514 3000 914 140 544 341 514 4000 1219 141 544 351 514 5000 1524 141 544 351 514 6000 1829 142 544 361 524 7000 2134 142 544 36 524 8000 2438 143 554 372 524 9000 2743 t43 554 38 534 10000 3048 442 554 140 534 11000 3353 44 554 141 534 12000 3658 452 156 142 544 13000 3962 473 156 143 544 1
33. 5 High Static 4559 15 8 8196 15 0 Std Static 1448 5 5 80 5 2 230 3 60 187 253 25 0 164 325 1 5 Med Static 2278 7 9 8196 7 5 High Static 4559 15 8 8196 15 0 Std Static 1448 2 7 8096 2 6 460 3 60 414 506 12 2 100 325 0 8 Med Static 2278 3 6 8196 3 4 High Static 4559 7 8 8196 7 4 Std Static 1379 2 5 8096 2 4 575 3 60 518 633 9 0 78 325 0 6 Med Static 3775 2 9 8196 2 8 High Static 1870 5 9 8196 5 6 48TC 09 8 5 TONS VOLTAGE COMP ea OFM ea IFM V Ph Hz RANGE Max Max MIN MAX REA LRA WATTS FLA TYPE WATTS AMP Draw EFF at Full Load FLA Std Static 1448 5 5 8096 5 2 208 3 60 187 253 295 195 325 1 5 Med Static 2120 5 5 8096 5 2 High Static 2694 10 5 8096 10 0 Std Static 1448 5 5 8096 5 2 230 3 60 187 253 295 195 325 1 5 Med Static 2120 5 5 8096 5 2 High Static 2694 10 5 8096 10 0 Std Static 1448 2 7 8096 2 6 460 3 60 414 506 147 95 325 0 8 Med Static 2120 2 7 8096 2 6 High Static 2694 4 6 8096 4 4 Std Static 1379 2 5 8096 2 4 575 3 60 518 633 122 80 325 0 6 Med Static 1390 2 1 8096 2 0 High Static 3775 2 9 8196 2 8 48TC 12 10 TONS VOLTAGE COMP ea OFM ea IFM V Ph Hz RANGE Max Max MIN MAX REA LRA WATTS FLA TYPE WATTS AMP Draw EFF at Full Load FLA Std Static 2120 5 5 8096 5 2 208 3 60 187 253 301 225 325 1 5 Med Static 3775 10 5 8196 10 0 High Static 4559 15 8 8196 15 0 Std Static 2120 5 5 8096 5 2 230 3 60 187 253 301 225 325 1 5 Med Static 3775 10 5 8196 10 0 H
34. 6 70 75 80 8 90 95 100 DEGREES FAHRENHEIT C06035 Fig 77 Outside Air Temperature Changeover Setpoints E S u 30 L 2 25 20 LE 15 Ce 7 7 LL 10 o o 5 o Zo r r r r r r r r z 0 13 0 20 0 22 0 25 0 30 0 35 0 40 0 45 0 50 o ei STATIC PRESSURE in wg C06031 Fig 78 Outdoor Air Damper Leakage Differential Dry Bulb Control For differential dry bulb control the standard outdoor dry bulb sensor is used in conjunction with an additional accessory dry bulb Sensor part number CRTEMPSNOO2A00 The accessory sensor must be mounted in the return airstream See Fig 79 Wiring is 58 provided in the EconoMi er IV wiring harness See Fig 70 ECONOMISERIV 4 CONTROLLER ECONOMISERIV GROMMET d SC RETURN AIR SENSOR RETURN DUCT FIELD PROVIDED C07085 Fig 79 Return Air Temperature or Enthalpy Sensor Mounting Location CONTROL CURVE CONTROL POINT APPROX deg F deg C In this mode of operation the outdoor air temperature is compared to the return air temperature and the lower temperature airstream is used for cooling When using this mode of changeover control turn the enthalpy setpoint potentiometer fully clockwise to the D setting See Fig 76 Outdoor Enthalpy Changeover For enthalpy control accessory enthalpy sensor part number HH57ACO78 is required Repla
35. 8196 7 5 Std Static 1000 5 1 7096 4 9 230 3 60 187 253 15 6 110 325 1 5 Med Static 2120 5 5 8096 5 2 High Static 2615 7 9 8196 7 5 Std Static 2120 2 7 8096 2 6 460 3 60 414 506 7 7 52 325 0 8 Med Static 2615 3 6 8196 3 4 High Static 2615 3 6 8196 3 4 Std Static 2120 2 1 8096 2 0 575 3 60 518 633 5 8 39 325 0 6 Med Static 3775 2 9 8196 2 8 High Static 3775 2 9 8196 2 8 48TC 07 6 TONS VOLTAGE COMP ea OFM ea IFM V Ph Hz RANGE Max Max MIN MAX RLA LRA WATTS FLA TYPE WATTS AMP Draw EFF at Full Load FLA Std Static 2120 5 5 8096 5 2 208 3 60 187 253 19 0 12 325 1 5 Med Static 2615 7 9 8196 7 5 High Static 3775 10 7 8196 10 2 Std Static 2120 5 5 8096 5 2 230 3 60 187 253 19 0 12 325 1 5 Med Static 2615 7 9 8196 7 5 High Static 3775 10 7 8196 10 2 Std Static 2120 2 7 8096 2 6 460 3 60 414 506 9 7 62 325 0 8 Med Static 2615 3 6 8196 3 4 High Static 3775 5 0 8196 4 8 Std Static 2120 2 1 8096 2 0 575 3 60 518 633 7 4 50 325 0 6 Med Static 3775 2 9 8196 2 8 High Static 3775 2 9 8196 2 8 100 APPENDIX IV ELECTRICAL DATA cont 48TC 08 7 5 TONS VOLTAGE COMP ea OFM ea IFM ET iiec Max Max SE MIN MAX RLA LRA WATTS FLA TYPE WATTS AMP Draw ye d FLA Std Static 1448 5 5 8096 5 2 208 3 60 187 253 250 164 325 1 5 Med Static 2278 7 9 8196 7
36. 87 1284 0 95 1125 1073 0 70 1135 0 79 1194 0 87 1250 0 96 1302 1 04 1200 1093 0 77 1155 0 87 1213 0 96 1268 1 05 1321 1 14 1275 1113 0 85 1174 0 95 1232 1 05 1287 1 15 1339 1 25 1350 1133 0 92 1194 1 03 1252 1 14 1307 1 25 1358 1 35 1425 1154 1 01 1215 1 12 1272 1 24 1326 1 35 1378 1 46 1500 1175 1 09 1235 1 22 1292 1 34 1346 1 46 1397 1 58 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part number KR11AG006 and belt part number KR30AE039 89 48TC APPENDIX III FAN PERFORMANCE cont 48TC 05 1 Phase 4 Ton Horizontal Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1200 643 0 23 762 0 34 859 0 46 944 0 58 1020 0 71 1300 675 0 28 790 0 40 886 0 52 969 0 65 1044 0 78 1400 707 0 33 819 0 45 913 0 58 996 0 72 1070 0 86 1500 740 0 38 849 0 52 941 0 66 1023 0 80 1096 0 95 1600 773 0 45 970 0 73 1050 0 88 1123 1 04 1700 807 0 52 910 0 67 999 0 82 1078 0 98 1150 1 14 1800 841 0 59 942 0 75 1029 0 91 1106 1 08 1900 875 0 68 974 0 85 1059 1 02 1135 1 19 2000 910 0 77 1006 0 95 1090 1 13 1234 1 49 AVAILABLE EXTERNAL STATIC PRESSURE
37. DI On Off schedule type or if occupancy is forced occupied by the BAS during BAS On Off schedule type When transitioning from unoccupied to occupied there will be a configured time delay of 5 to 600 seconds before starting the fan The fan will continue to run as long as compressors heating stages or the dehumidification relays are on when transitioning from occupied to unoccupied with the exception of Shutdown mode If Fire Shutdown safety chain SAT alarm or SPT alarm are active the fan will be shutdown immediately regardless of the occupancy state or demand The RTU MP has an optional Supply Fan Status input to provide proof of airflow If this is enabled the point will look for a contact closure whenever the Supply Fan Relay is on If it is not enabled then it will always be the same state as the Supply Fan Relay The cooling economizer heating dehumidification CO2 and power exhaust routines will use this input point for fan status Cooling The compressor outputs are controlled by the Cooling Control PID Loop and Cooling Stages Capacity algorithm They will be used to calculate the desired number of stages needed to satisfy the space by comparing the Space Temperature SPT to the Occupied Cool Setpoint plus the T56 slider offset when occupied and the Unoccupied Cool Setpoint UCSP plus the T56 slider offset if unoccupied The economizer if available will be used for cooling in addition to the compressors The following co
38. Fig 19 Typical Return Air Detector Location Return Air with Economizer The sampling tube is inserted through the side plates of the economizer housing placing it across the return air opening on the unit basepan See Fig 20 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting location Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected See installation steps below Return Air Sampling Tube C08129 Fig 20 Return Air Sampling Tube Location Completing Installation of Return Air Smoke Sensor Flexible Exhaust Tubes Sample Tube C08126 Fig 21 Return Air Detector Shipping Position 1 Unscrew the two screws holding the Return Air Sensor detector plate See Fig 21 Save the screws 2 Remove the Return Air Sensor and its detector plate 3 Rotate the detector plate so the sensor is facing out wards and the sampling tube connection is on the bot tom See Fig 22 4 Screw the sensor and detector plate into its operating position using screws from Step 1 Make sure the sampling tube connection is on the bottom and the ex haust tube is on the top See Fig 22 5 Connect the flexible tube on the sampli
39. Ol Quvog TVNIWYIL T1Vn12V HOIVW LON 300 LNOAVT JILVWIHIS QuvOB TVNINHU3I 310N 1N3A39NVUUV LNINOdNOD Deoselces cco ad D ki nano n m EDET DD CD D CD D CD uo b QoS mia Im 5 200 as A Ei E 4013 a kai 1 Di si BIO D Fm AINO MIT HATS S DLIYN3NOS Wine NOYA f w18 LO mu d 135 l 35 48TC Table 15 Thermistor Resistance vs Temperature Values for Space Temperature Sensor Supply Air Temperature Sensor and Outdoor Air Temperature Sensor TEMP TEMP RESISTANCE C F Ohms 40 40 335 651 95 31 242 195 20 22 176 683 25 13 130 243 20 4 96 974 15 5 72 895 10 14 55 298 5 23 42 315 0 32 32 651 5 41 25 395 10 50 19 903 15 59 15 714 20 68 12 494 25 77 10 000 30 86 8 056 35 95 6 530 40 104 5 325 45 113 4 367 50 122 3 601 55 131 2 985 60 140 2 487 65 149 2 082 70 158 1 752 NOTE The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating devices Be sure the probe tip does not come in contact with any of the unit s heater surfaces Outdoor Air Temperature OAT Sens
40. POWER 0 0 SUPRE n n Q toi I GND OUTLET SEE CONTROL SCHEMATIC LEGEND MARKED WIRE TERMINAL MARKED TERMINAL UNMARKED TERMINAL BLOCK SPLICE SPLICE MARKED FACTORY WIRING FIELD CONTROL WIRING FIELD POWER WIRING CIRCUIT BOARD TRACE ACCESSORY OR OPTIONAL WIRING TO INDICATE COMMON POTENTIAL ONLY NOT TO REPRESENT WIRING CCH 4 6 ION ONLY BLK H SCH N BLK BLK C BLK _ _ BL BLK 1PH FM ONLY ap a CAP 3 BLK XC a YEL XR maii COMP BLU S BLK BLU YEL OFM CAP 1 YEL zu Fo BRN YEL Fo BRN oT CAP 2 IFM YEL 1 PH 3 TON BELT DRIVE 1 4 TON BELT DRIVE 1 5 TON BELT DRIVE 1 amp 2 amp 2 YEL IFM BLU 3 PH BLK 11 H H21 BLK Fo BRN O BRN YEL 0O YEL IDN YEL BLK C 460 230 200 CAP CB TRAN 0 2 Gf COMP SCHEMATIC Ban ORBITER DDC 4 FU GND GVR HPS HS NOTES Lo IF ANY OF THE ORIGINAL WIRE FURNISHED ih MUST BE REPLACED IT MUST BE REPLACED SLM WITH TYPE 90 C WIRE OR ITS EQUIVALENT COMPRESSOR AND FAN MOTORS ARE THERMALLY IGC PROTECTED THREE PHASE MOTORS ARE Ti PROTECTED AGAINST PRIMARY SINGLE PHASING LPS CONDITIONS LS 208 230V UNIT TRAN IS WIRED FOR 230V UNIT MGV IF UNIT IS TO BE RUN WITH 208V POWER SUPPLY GC DISCONNECT BLK WIRE FROM 230V TAP AND OFM CONNECT TO 200V TAP OLR USE COPPER COPPER CLAD ALUMINUM OR PL ALUMINUM CONNECTOR
41. SUCTION LINE TEMPERATURE F 7 1 4 10 16 21 27 32 SUCTION LINE TEMPERATURE C 48TM500887 20 Fig 12 cont Cooling Charging Charts 12 C08438 C08439 Table 1 Cooling Service Analysis PROBLEM CAUSE REMEDY Compressor and Condenser Fan Will Not Start Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective thermostat contactor transformer or control relay Replace component Insufficient line voltage Determine cause and correct Incorrect or faulty wiring Check wiring diagram and rewire correctly Thermostat setting too high Lower thermostat setting below room temperature Compressor Will Not Start But Condenser Fan Runs Faulty wiring or loose connections in compressor circuit Check wiring and repair or replace Compressor motor burned out seized or internal overload open Determine cause Replace compressor Defective run start capacitor overload start relay Determine cause and replace One leg of three phase power dead Replace fuse or reset circuit breaker Determine cause Compressor Cycles other than normally satisfying ther mostat Refrigerant overcharge or undercharge Recover refrigerant evacuate system and recharge to nameplate Defective compressor Replace and determine cause Insufficient line volt
42. UP GENERAL Unit Preparation Make sure that unit has been installed in accordance with installation instructions and applicable codes Gas Piping Check gas piping for leaks A WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could result in personal injury or death Disconnect gas piping from unit when leak testing at pressure greater than 1 2 psig Pressures greater than 1 2 psig will cause gas valve damage resulting in hazardous condition If gas valve is subjected to pressure greater than 1 2 psig it must be replaced before use When pressure testing field supplied gas piping at pressures of 1 2 psig or less a unit connected to such piping must be isolated by manually closing the gas valve Return Air Filters Make sure correct filters are installed in unit see Appendix II Physical Data Do not operate unit without return air filters Outdoor Air Inlet Screens Outdoor air inlet screen must be in place before operating unit Compressor Mounting Compressors are internally spring mounted Do not loosen or remove compressor hold down bolts Internal Wiring Check all electrical connections in unit control boxes Tighten as required Refrigerant Service Ports Each unit system has two 1 4 SAE flare with check valves service ports one on the suction line and one on the compressor discharge line Be sure that caps on the ports are tight Compressor Rotation On 3 phase
43. VAM RED GRA aD aD i DT 4 foc d 02305 NM HD H2 BLK O WHT SECONDARY TUNER 120V GROUND FAULT TRAN4 v SS INTERRUPTER CONVENIENCE d a OUTLET m e D GFI CO X Q3 U GR YEL 1 3 e C GRN YEL SECONDARY mol 20V BLK WHT ee SWITCH FUSE E p 11 15 AMP C08283 Fig 15 Powered Convenience Outlet Wiring UNIT CONNECT PRIMARY TRANSFORMER VOLTAGE AS CONNECTIONS TERMINALS 208 24o Lt RED YEL Hi H3 230 L2 BLU GRA H2 H4 L1 RED H1 460 480 Splice BLU YEL H2 H3 L2 GRA H4 L1 RED H1 SE 600 L2 GRA H2 Duty Cycle The unit powered convenience outlet has a duty cycle limitation The transformer is intended to provide power on an intermittent basis for service tools lamps etc it is not intended to provide 15 amps loading for continuous duty loads such as electric heaters for overnight use Observe a 5046 limit on circuit loading above 8 amps i e limit loads exceeding 8 amps to 30 minutes of operation every hour Maintenance Periodically test the GFCI receptacle by pressing the TEST button on the face of the receptacle This should cause the internal circuit of the receptacle to trip and open the receptacle Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required Press the RESET button to clear the tripped condition Fuse on powered type The factory fuse is a Bussman Fusetron T 15 non renew
44. Voltage MOCP Maximum over current protection 3 3 PE Power exhaust UNPWRD CO Unpowered convenient outlet E 227 NOTES 1 In compliance with NEC requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit shall be fuse or HACR breaker Canadian units may be fuse or circuit breaker 2 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 296 Use the following formula to de termine the percentage of voltage imbalance max voltage deviation from average voltage Voltage Imbalance 100 x average voltage Determine maximum deviation from average voltage AB 227 224 3v BC 231 227 4v AC 227 226 2 1v Maximum deviation is 4 v Determine percent of voltage imbalance Voltage Imbalance 100 x 227 1 76 This amount of phase imbalance is satisfactory as it is below the maximum allowable 2 IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately 103 48TC Wiring Diagrams APPENDIX V WIRING DIAGRAM LIST 48TC A SIZE VOLTAGE CONTROL POWER 208 230 1 60 48TM500213 04 481M500749 07 M 208 230 3 60 48TM500213 04 48TM500748 06 460 3 60 48TM500213 04 48TM500748 06 575 3 60 48TM500213 04 48TM500215 06
45. a Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770 e High Static ZS 7 Standard Static 854 825 795 766 736 707 678 648 619 589 560 7 Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770 sa High Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035 m Standard Static 1175 1135 1094 1054 1013 973 932 892 851 811 770 a Medium Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035 SS High Static S Standard Static 1175 1135 1094 1054 1013 973 932 892 851 811 770 a S Medium Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035 2 High Static 1687 1649 1610 1572 1533 1495 1457 1418 1380 1341 1303 3 Standard Static 1457 1419 1380 1342 1303 1265 1227 1188 1150 1111 1073 a Boe Medium Static 1518 1484 1449 1415 1380 1346 1311 1277 1242 1208 1173 sa High Static 1788 1757 1725 1694 1662 1631 1600 1568 1537 1505 1474 a Standard Static 747 721 695 670 644 618 592 566 541 515 489 a SE Medium Static 949 927 906 884 863 841 819 798 776 755 733 sa High Static 1102 1083 1063 1044 1025 1006 986 967 948 928 909 Standard Static 733 712 690 669 647 626 604 583 5
46. a USDA accepted biodegradable agent that will not harm the coil or surrounding components such as electrical wiring painted metal surfaces or insulation Use of non recommended coil cleaners is strongly discouraged since coil and unit durability could be affected One Row Coil Wash coil with commercial coil cleaner It is not necessary to remove top panel Two Row Coils Clean coil as follows 1 Turn off unit power tag disconnect 2 Remove top panel screws on condenser end of unit 3 Remove condenser coil corner post See Fig 8 To hold top panel open place coil corner post between top panel and center post See Fig 9 REMOVE SCREWS CONTROL POST CORNER POST REMOVE SCREWS TOP REMOVE PANEL SCREWS A COIL CENTER POST REMOVE SCREWS COMPRESSOR ACCESS CONDENSER REMOVE COIL PANEL COIL CORNER POST C08205 Fig 8 Cleaning Condenser Coil CENTER BAFFLE TOP PANEL COIL CORNER POST COMPRESSOR ACCESS PANEL CONDENSER COIL C08206 Fig 9 Propping Up Top Panel 4 Remove screws securing coil to compressor plate and compressor access panel 5 Remove fastener holding coil sections together at re turn end of condenser coil Carefully separate the out er coil section 3 to 4 in from the inner coil section See Fig 10 TOP VIEW TOP PANEL CENTER BAFFLE CONDENSER COIL INNER COIL SECTION OUTER COIL SECTION C08207 Fig 10 Separating Coil Sections 6 Use a
47. ay FS see la las laj led W a AT 70 m BE REQUIRED 1 24VAC 60Hz Ae RT iin 400mA MAX t us ERI Sd ANSI 221 20 AUTOMATIC IGNITION SYSTEMS C08452 Fig 38 Integrated Gas Control IGC Board Table 9 IGC Connections CONNECTION TERMINAL LABEL POINT DESCRIPTION SENSOR LOCATION TYPE OF UO PIN NUMBER INPUTS RT C Input power from TRAN 1 control box 24 VAC SS Speed sensor gas section analog input J1 1 3 FS T1 Flame sensor gas section switch input Ww Heat stage 1 LCTB 24 VAC J2 2 RS Rollout switch gas section switch input J2 5 6 LS Limit switch fan section switch input J2 7 8 CS Centrifugal switch not used Switch input J2 9 10 OUTPUTS L1 CM Induced draft combustion motor gas section line VAC IFO Indoor fan control box relay J2 1 GV Gas valve heat stage 1 gas section relay J2 11 12 Table 10 Orifice Sizes ORIFICE CARRIER DRILL DRILL SIZE PART NUMBER DIA in 30 LH32RF129 0 1285 1 8 LH32RF125 0 1250 31 LH32RF120 0 1200 32 LH32RF116 0 1160 33 LH32RF113 0 1130 34 LH32RF111 0 1110 35 LH32RF110 0 1100 36 LH32RF105 0 1065 37 LH32RF104 0 1040 38 LH32RF102 0 1015 39 LH32RF103 0 0995 40 LH32RF098 0 0980 41 LH32RF096 0 0960 42 LH32RF094 0 0935 43 LH32RF089 0 0890 44 LH32RF086 0 0860 45 LH32RF082 0 0820 46 LH32RF080 0 08
48. communicates the smoke detector s tripped status to the CCN building control See Fig 23 for unit smoke detector wiring The Fire Shutdown Switch configuration MENU Config Inputs input 5 identifies the normally open status of this input when there is no fire alarm 47 48TC Alarm state is reset when the smoke detector alarm condition is cleared and reset at the smoke detector in the unit Connecting Discrete Inputs Filter Status The filter status accessory is a field installed accessory This accessory detects plugged filters When installing this accessory the unit must be configured for filter status by setting MENU Config Inputs input 3 5 8 or 9 to Filter Status and normally open N O or normally closed N C Input 8 or 9 is recommended for easy of installation Refer to Fig 59 and Fig 60 for wire terminations at J5 Fan Status The fan status accessory is a field installed accessory This accessory detects when the indoor fan is blowing air When installing this accessory the unit must be configured for fan status by setting MENU Config Inputs input 3 5 8 or 9 to Fan Status and normally open N O or normally closed N C Input 8 or 9 is recommended for easy of installation Refer to Fig 59 and Fig 60 for wire terminations at J5 Remote Occupancy The remote occupancy accessory is a field installed accessory This accessory overrides the unoccupied mode and puts the unit in occupi
49. connect the SIG COM terminal to terminal TB1 7 See Fig 64 IAQ Sensor MLB S roro 143 24 VAC C08462 Fig 64 RTU MP Indoor CO Sensor 33ZCSENCO2 Connections Outdoor Air Quality Sensor PNO 33ZCSENCO2 plus weatherproof enclosure The outdoor air CO sensor is designed to monitor carbon dioxide CO2 levels in the outside ventilation air and interface with the ventilation damper in an HVAC system The OAQ sensor is packaged with an outdoor cover See Fig 52 The outdoor air CO2 sensor must be located in the economizer outside air hood Wiring the Outdoor Air CO Sensor A dedicated power supply is required for this sensor A two wire cable is required to wire the dedicated power supply for the sensor The two wires should be connected to the power supply and terminals 1 and 2 To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the OAQ sensor See Fig 50 Connect the 4 to 20 mA terminal to 48TC s terminal TB1 11 Connect the SIG COM terminal to 48TC s terminal TB1 13 See Fig 65 OAQ Sensor RH Sensor 24 VAC C08463 Fig 65 RTU MP Outdoor CO2 Sensor 33ZCSENCO2 Connections On 48TC units equipped with factory installed Smoke Detector s the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit s LCTB input The FSD function is initiated via the smoke detector s Alarm NO contact set The PremierLink
50. demand limit setpoint value and remain in effect until the BACnet demand limit variable receives a 0 value FASTENER TORQUE VALUES See Table 32 for torque values Table 32 Torque Values Supply fan motor mounting 120 12 in Ibs Supply fan motor adjustment plate 120 12 in Ibs Motor pulley setscrew 724 5 in Ibs Fan pulley setscrew 72 5 in Ibs Blower wheel hub setscrew 72 5 in Ibs Bearing locking collar setscrew 65 70 in Ibs Compressor mounting bolts 65 75 in Ibs Condenser fan motor mounting bolts 20 2 in Ibs Condenser fan hub setscrew 84 12 in Ibs 81 48TC APPENDIX I MODEL NUMBER SIGNIFICANCE Model Number Nomenclature 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 48 TCDA04A 1A5 0A04A0 Unit Heat Type 48 Gas heat pkg rooftop Brand Packaging 0 Standard Tier Model 1 LTL TC Entry tier with Puron refrigerant Electrical Options A None Heat Size C Non fused disc D Low heat D Thru the base E Medium heat F Non fused amp thru the base F High heat L Low NO low heat Service Options M Low NOx medium heat 0 None N Low NO high heat 1 Unpowered convenience outlet S Stainless steel low heat 2 Powered convenience outlet R Stainless st
51. energized To prevent thermostat short cycling the unit is locked into the Heating mode for at least 1 minute when WI is energized The induced draft motor is energized and the burner ignition sequence begins The indoor evaporator fan motor IFM is energized 45 seconds after a flame is ignited On units equipped for two stages of heat when additional heat is needed W2 is energized and the high fire solenoid on the main gas valve MGV is energized When the thermostat is satisfied and W1 is deenergized the IFM stops after a 45 second time off delay Cooling Unit With EconoMi er IV For Occupied mode operation of EconoMi er IV there must be a 24 v signal at terminals TR and N provided through PL6 3 from the unit s IFC coil Removing the signal at N places the EconoMi er IV control in Unoccupied mode During Occupied mode operation indoor fan operation will be accompanied by economizer dampers moving to Minimum Position setpoint for ventilation If indoor fan is off dampers will close During Unoccupied mode operation dampers will remain closed unless a Cooling by free cooling or DCV demand is received Integrated EconoMi er IV operation on 48TC single compressor model requires a 2 stage thermostat Y1 and Y2 switches When free cooling using outside air is not available the unit cooling sequence will be controlled directly by the space thermostat as described above as Cooling Without Economizer Outside air damper posi
52. have accumulated 2 hours prior to the beginning of the next occupied period The maximum damper position that will be used is temperature compensated for cold whether conditions and can be pre empted by Temperature Compensated Start function For pre occupancy to occur the following conditions must be met IAQ Pre Occupancy Purge option is enabled in the CONFIG configuration table Unit is in the unoccupied state Current Time is valid 76 Next Occupied Time is valid Time is within 2 hours of next Occupied period Time is within Purge Duration user defined 5 to 60 minutes in the CONFIG configuration table OAT Reading is available If all of the above conditions are met the economizer damper IOMP is temporarily overridden by the pre occupancy damper position PURGEMP The PURGEMP will be set to one of the following conditions based on atmospheric conditions and the space temperature e If the OAT NTLO Unoccupied OAT Lockout Temperature and OAT lt 65 F and OAT is less than or equal to OCSP and Enthalpy Low then PURGEMP 100 If the OAT NTLO then PURGEMP LTMP Low Temperature Minimum Position defaults to 10 If the OAT gt 65 F or OAT NTLO and OAT gt OCSP or Enthalpy High then PURGEMP HTMP High Temperature Minimum Position defaults to 35 The LIMP and HTMP are user adjustable values from 0 to 100 in the SETPOINT table Whenever PURGEMP results in a number greater than
53. levels of CO present in the space air The CO sensors are all factory set for a range of 0 to 2000 ppm and a linear mA output of 4 to 20 Refer to the instructions supplied with the CO sensor for electrical requirements and terminal locations See Fig 50 for typical CO sensor wiring schematic To accurately monitor the quality of the air in the conditioned air space locate the sensor near a return air grille if present so it senses the concentration of CO2 leaving the space The sensor should be mounted in a location to avoid direct breath contact Do not mount the IAQ sensor in drafty areas such as near supply ducts open windows fans or over heat sources Allow at least 3 ft 0 9 m between the sensor and any corner Avoid mounting the sensor where it is influenced by the supply air the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream Wiring the Indoor Air Quality Sensor For each sensor use two 2 conductor 18 AWG American Wire Gage twisted pair cables unshielded to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the sensor See Fig 50 Connect the 4 20 mA terminal to terminal TB1 9 and
54. network can range from 9600 to 76 8K baud Physical Addresses can be set from 01 to 99 Johnson N2 N2 is not a standard protocol but one that was created by Johnson Controls Inc that has been made open and available to the public The speed of N2 network is limited to only 9600 baud Physical Addresses can be set from 01 to 99 LonWorks LonWorks is an open protocol that requires the use of Echelon s Neuron microprocessor to encode and decode the LonWorks packets In order to reduce the cost of adding that hardware on every module a separate LonWorks Option Card LON OC was designed to connect to the RTU MP This accessory card is needed for LonWorks and has to be ordered and connected using the ribbon cable to plug J15 The RTU MP s baud rate must be set to 38 4k to communicate with the LON OC The address switches SW1 amp SW2 are not used with LonWorks Cable Local Access BACview Handheld The BACview is a keypad display interface used to connect to the RTU MP to access the control information read sensor values and test the RTU see Fig 68 This is an accessory interface that does not come with the MP controller and can only be used at the unit Connect the BACview to the RTU MP s J12 local access port There are 2 password protected levels in the display User and Admin The user password is defaulted to 0000 but can be changed The Admin password is 1111 and cannot be changed There is a 10 minute auto logo
55. personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation A WARNING FIRE EXPLOSION HAZARD Failure to follow this warning could result in personal injury death and or property damage Refer to the User s Information Manual provided with this unit for more details Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance What to do if you smell gas DO NOT try to light any appliance DO NOT touch any electrical switch or use any phone in your building IMMEDIATELY call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department A WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Before performing service or maintenance operations on unit turn off main power switch to unit Electrical shock and rotating equipment could cause injury 4 WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Units with convenience outlet circuits may use multiple disconnects Check convenience outlet for power status before opening unit for service Locate its disconnect switch if appropriate and open it Tag out this switch if necessary A WARNING UNIT OPERATION A
56. protected against evaporator coil frosting and low temperature conditions by a temperature switch mounted on the evaporator coil hairpin Trip setting is 30 F 5 F 1 C 3 C Reset is automatic at 45 F 7 C Supply Indoor Fan Motor Protection Disconnect and lockout power when servicing fan motor The standard supply fan motor is equipped with internal overcurrent and overtemperature protection Protection devices reset automatically The High Static option supply fan motor is equipped with a pilot circuit Thermix combination overtemperature overcurrent protection device This device resets automatically Do not bypass this switch to correct trouble Determine the cause and correct it Condenser Fan Motor Protection The condenser fan motor is internally protected against overtemperature Relief Device A soft solder joint at the suction service access port provides pressure relief under abnormal temperature and pressure conditions De fire in building Protect this joint during brazing operations near this joint Control Circuit 24 V The control circuit is protected against overcurrent conditions by a circuit breaker mounted on control transformer TRAN Reset is manual GAS HEATING SYSTEM General The heat exchanger system consists of a gas valve feeding multiple inshot burners off a manifold The burners fire into matching primary tubes The primary tubes discharge into combustion plenum where gas fl
57. same steps to create the Holiday schedule NOTE Push button override is only available when running a local or BACnet Schedule BACnet Schedule For use with a Building Automation System that supports native BACnet scheduling is scheduling the unit With the Occupancy Source set to BACnet schedule the BAS will control the unit through network communication and it s own scheduling function BAS On Off The Building Automation System is scheduling the unit via an On Off command to the BAS ON OFF software point The Building Automation System can be speaking BACnet Modbus or N2 and is writing to the BAS On Off point in the open protocol point map NOTE If the BAS supports NATIVE BACnet scheduling then set the Occupancy Source to BACnet schedule If the BAS is BACnet but does NOT support NATIVE BACnet scheduling then set the Occupancy Source to BAS On Off DI On Off A hard wired input on the RTU MP will command the unit to start stop Inputs 3 5 8 and 9 on plug J5 can be hard wired to command the unit to start stop NOTE Scheduling can either be controlled via the unit or the BAS but NOT both Indoor Fan The indoor fan will be turned on whenever any one of the following conditions is true It isin the occupied mode This will be determined by its own internal occupancy schedule Whenever there is a demand for cooling or heating in the unoccupied mode Whenever the remote occupancy switch is closed during
58. sections describe the operation for the functions of the RTU MP All point objects that are referred to in this sequence will be in reference to the objects as viewed in BACview Handheld Schedulin Scheduling is used to start heating or cooling become occupied based upon a day of week and a time period and 78 control to the occupied heating or cooling setpoints Scheduling functions are located under occupancy determination and the schedule menu accessed by the Menu softkey see Appendix for menu structure Your local time and date should be set for these functions to operate properly Five scheduling functions are available by changing the Occupancy Source to one of the following selections Always Occupied Default Occupancy The unit will run continuously RTU MP ships from the factory with this setting Local Schedule The unit will operate according to the schedule configured and stored in the unit The local schedule is made up of three hierarchy levels that consist of two Override schedules twelve Holiday and four Daily schedules and are only accessible by the BACview screen handheld or virtual The Daily schedule is the lowest schedule in the hierarchy and is overridden by both the Holiday and Override schedule It consists of a start time a stop time both in 24 hour mode and the seven days of the week starting with Monday and ending in Sunday To select a daily schedule scroll to the Schedules menu off of th
59. smoke detector does not differentiate which sensor signals an alarm or trouble condition Smoke Detector Locations Supply Air The Supply Air smoke detector sensor is located to the left of the unit s indoor supply fan See Fig 18 Access is through the fan access panel There is no sampling tube used at this location The sampling tube inlet extends through the side plate of the fan housing into a high pressure area The controller is located on a bracket to the right of the return filter accessed through the lift off filter panel C08245 Fig 18 Typical Supply Air Smoke Detector Sensor Location 16 Return Air without Economizer The sampling tube is located across the return air opening on the unit basepan See Fig 19 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting location Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected See installation steps below Return Air Detector module shipping position shown Controller module Return Air Detector Sampling Tube RA detector must be moved from shipping position to operating position by installer C07307
60. the Phoenix connectors on the RTU MP board The factory installed RTU MP control includes the supply air temperature SAT sensor The outdoor air temperature OAT sensor is included in the FIOP accessory EconoMi er 2 package Refer to Table 21 RTU MP Controller Inputs and Outputs for locations of all connections to the RTU MP board 42 c gt c cC N 1 8 3 040VDC e em Power ei wc J3 3 3 SW 3 3 9 mc SS pe ovv00s5 amp BR 9 ooo 5 RN e900008 4 la Lu Z 5 SS S s S ANSANTE Fos 225 2222 235233 CSSBZZZZZE 52528233 L SS S aggala SES NSLLBZ dadalo BS S E SS S ERR HEN GEES UKSEKSESE SS5S5 ia a Ad ddddd4d J5 HK50AA047 PCB 012311 Rev 3 amp 4 RTU MP AO 2 Lem GND 0 10V only E DO 6 H Humidistat TL DO 7 Spare PAM Gei DO 8 PE MSB LSB i Rnet Power Exhaust Rnet J1 1 0 cr2032 ES E GND LOCAL ACCESS PORT RNET 3 le mi ki le le ke COMM OPTION J14 Protocol Selector Remove MEM Input 10 T 55 Accy BACnet or Input 11 T 56 Accy ow C07129 Fig 59 RTU MP Multi Protocol Control Board 43 8St809 ure13erq Suri 1017000 Wans4s JW ALIR 09 Sl FLON 44 Quvog IVNINYIL M PER In SE d EQ qoc na Si
61. the return air enthalpy to determine EconoMi er IV use The controller selects the lower enthalpy air return or outdoor for cooling For example when the outdoor air has a lower enthalpy than the return air the EconoMi er IV opens to bring in outdoor air for free cooling Replace the standard outside air dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location See Fig 70 Mount the return air enthalpy sensor in the return air duct See Fig 79 Wiring is provided in the EconoMi er IV wiring harness See Fig 70 The outdoor enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the EconoMi er IV controller When using this mode of changeover control turn the enthalpy setpoint potentiometer fully clockwise to the D setting Indoor Air Quality IAQ Sensor Input The IAQ input can be used for demand control ventilation control based on the level of CO2 measured in the space or return air duct Mount the accessory IAQ sensor according to manufacturer specifications The IAQ sensor should be wired to the AQ and AQ1 terminals of the controller Adjust the DCV potentiometers to correspond to the DCV voltage output of the indoor air quality sensor at the user determined setpoint See Fig 82 CO2 SENSOR MAX RANGE SETTING 6000 amp 5000 amp z O 4000 lt N 800 ppm 3 3000 900 ppm mg 1000 p
62. track then closing the spring clips Manual Outside Air Hood Screen This inlet screen is secured by a retainer angle across the top edge of the hood See Fig 4 48TC i e BOU 9 C07156 Fig 4 Screens Installed on Outdoor Air Hood Sizes 7 1 2 to 12 1 2 Tons Shown To remove the screen loosen the screws in the top retainer and slip the retainer up until the filter can be removed Re install by placing the frame in its track rotating the retainer back down and tighten all screws SUPPLY FAN BLOWER SECTION 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death Before performing service or maintenance operations on the fan system shut off all unit power and tag out the unit disconnect switch Do not reach into the fan section with power still applied to unit Supply Fan Belt Drive The supply fan system consists of a forward curved centrifugal blower wheel on a solid shaft with two concentric type bearings one on each side of the blower housing A fixed pitch driven pulley is attached to the fan shaft and an adjustable pitch driver pulley is on the motor The pulleys are connected using a V type belt See Fig 5 C07087 Fig 5 Belt Drive Motor Mounting Belt Check the belt condition and tension quarterly Inspect the belt for signs of cracking fraying or glazing along the inside surfaces Check belt ten
63. transformer and wiring to the IGC High temperature limit switch is open Gas valve and igniter M the m of the indoor evapo 2 Limit Switch Fault Off Limit switch closed E ly air temperature Flashes Indoor fan and inducer or heat call W Off QUE E d ppy pe o rise is within the range on the unit name n E GET plate Check wiring and limit switch opera tion 3 GE tan and ind def Flame sense normal The IGC sensed a flame when the gas Flame Sense Fault Power reset for LED valve should be closed Check wiring Flashes On reset flame sensor and gas valve operation 4 Four Consecutive Limit N heatin SE a M S 4 consecutive limit switch faults within a Flashes Switch Fault cade c KE single call for heat See Limit Switch Fault Unit unsuccessfully attempted ignition for 15 minutes Check igniter and flame sen 5 Heat call W Off Sor electrode spacing gaps etc Check Ignition Fault No gas heating Power reset for LED flame sense and igniter wiring Check gas Flashes reset valve operation and gas supply Check gas valve connections to IGC terminals BRN lead must be on Pin 11 If heat off no gas Inducer sense On when heat call Off or 6 Induced Draft Motor Aeatin dil Inducer sense nor inducer sense Off when heat call On Flashes Fault If duh G t mal or heat call W Check wiring voltage and operation of n 9 Off IGC motor Check speed sensor wiring to Off and inducer On IGC Gas valve and igniter Rollout switch has opened
64. using field supplied fan pulley part number KR11AZ506 motor pulley part number KR11HY191 and belt part number KR30AE042 93 48TC APPENDIX III FAN PERFORMANCE cont 48TC 07 3 Phase 6 Ton Horizontal Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 1800 913 0 64 1010 0 80 1098 0 98 1178 1252 1 35 1950 972 0 78 1065 0 96 1148 1 14 1298 1 54 2100 1032 0 95 1120 1 14 1200 1 33 1345 1 75 2250 1093 1 14 1 34 1325 1 76 1393 1 98 2400 1155 1 36 1377 2 01 1443 2 24 2550 1217 1 60 1293 1 82 1363 2 05 1430 2 28 1494 2 53 2700 1280 1 87 1352 2 10 2850 1343 2 17 1412 2 42 3000 1406 2 50 1472 2 76 AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 1800 1322 1 56 1388 1 77 1451 1 98 1510 1568 2 44 1950 1366 1 75 1430 1 97 1491 2 20 1606 2 67 2100 1411 1 97 1473 2 20 1645 2 92 2250 2 45 1632 2 94 1686 3 20 2400 1729 3 51 2550 2700 2850 3000 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part number KR11AZ406 motor pulley part number KR11HY151 and belt p
65. 0 the IAQ pre occupancy purge mode will be enabled turning on the Indoor Fan Relay and setting the economizer IOMP to the PURGEMP value When IAQ pre occupancy mode is not active PURGEMP 0 Unoccupied Free Cooling Unoccupied free cool function will start the indoor fan during unoccupied times in order to cool the space with outside air This function is performed to delay the need for mechanical cooling when the system enters the occupied period Depending on how Unoccupied Free Cooling is configured unoccupied mode can occur at any time in the unoccupied time period or 2 to 6 hours prior to the next occupied time Once the space has been sufficiently cooled during this cycle the fan will be stopped In order to perform unoccupied free cooling all of the following conditions must be met NTEN option is enabled in the CONFIG configuration table Unit is in unoccupied state Current time of day is valid Temperature Compensated Start mode is not active COOL mode is not active HEAT mode is not active SPT reading is available OAT reading is available Enthalpy is low OAT NTLO with 1 F hysteresis and Max Free Cool setpoint If any of the above conditions are not met Unoccupied Free Cool mode will be stopped otherwise the mode will be controlled as follows The NTFC setpoint NTSP is determined as NTSP OCSP OHSP 2 The Unoccupied Free Cool mode will be started when SPT gt NTSP
66. 0 3 60 MED 0 25 1 0 10 7 15 0 10 49 11 7 15 0 12 50 HIGH 11 2 15 0 11 58 12 2 15 0 12 59 STD 8 5 15 0 8 44 10 4 15 0 11 46 575 3 60 MED 0 24 1 9 8 5 15 0 8 44 10 4 15 0 11 46 HIGH 8 6 15 0 9 50 10 5 15 0 11 52 STD 39 2 60 0 37 150 41 1 60 0 40 152 208 230 1 60 MED Be 1 3 41 3 60 0 40 175 43 2 60 0 42 177 STD 25 9 30 0 25 126 27 8 40 0 27 128 208 230 3 60 MED 0 48 1 9 26 2 40 0 26 144 28 1 40 0 28 146 HIGH 28 5 40 0 29 170 30 4 45 0 30 172 O STD 12 5 20 0 12 60 13 5 20 0 13 61 2 460 3 60 MED 0 25 1 0 13 0 20 0 13 69 14 0 20 0 14 70 HIGH 13 8 20 0 14 82 14 8 20 0 15 83 STD 9 8 15 0 10 46 11 7 15 0 12 48 575 3 60 MED 0 24 1 9 9 9 15 0 10 52 11 8 15 0 13 54 HIGH 10 7 15 0 11 63 12 6 15 0 13 65 STD 30 5 45 0 30 157 32 4 50 0 32 159 208 230 3 60 MED 0 48 1 9 32 8 50 0 32 183 34 7 50 0 34 185 HIGH 32 8 50 0 32 183 34 7 50 0 34 185 S STD 15 5 25 0 15 79 16 5 25 0 16 80 460 3 60 MED 0 25 1 0 16 3 25 0 16 92 17 3 25 0 17 93 2 HIGH 17 3 25 0 17 101 18 3 25 0 18 102 STD 11 9 15 0 12 63 13 8 20 0 14 65 575 3 60 MED 0 24 1 9 12 7 20 0 12 74 14 6 20 0 15 76 HIGH 12 7 20 0 12 74 14 6 20 0 15 76 See notes on next page 102 APPENDIX IV ELECTRICAL DATA cont MCA MOCP DETERMINATION NO C O OR UNPWRD C O NO C O or UNPWRD C O NO C O or UNPWRD C O E NOM ipm COMBUSTION POWER NO PE w PE pwrd fr unit Z V Ph Hz Type FAN MOTOR E
67. 0A refrigerant is a blend it is strongly recommended that refrigerant always be removed from the cylinder as a liquid Admit liquid refrigerant into the system in the discharge line If adding refrigerant into the suction line use a commercial metering expansion device at the gauge manifold remove liquid from the cylinder pass it through the metering device at the gauge set and then pass it into the suction line as a vapor Do not remove Puron R 410A refrigerant from the cylinder as a vapor 5 8 HEX This surface provides a metal to metal seal when WASHER O RING Refrigerant Charge Amount of refrigerant charge is listed on the unit s nameplate Refer to Carrier GTAC2 5 Charging Recovery Recycling and Reclamation training manual and the following procedures Unit panels must be in place when unit is operating during the charging procedure No Charge Use standard evacuating techniques After evacuating system weigh in the specified amount of refrigerant Low Charge Coolin Using Cooling Charging Charts Fig 12 vary refrigerant until the conditions of the appropriate chart are met Note the charging charts are different from type normally used Charts are based on charging the units to the correct superheat for the various operating conditions Accurate pressure gauge and temperature sensing device are required Connect the pressure gauge to the service port on the suction line Mount the temperature sens
68. 10 47 LH32RF079 0 0785 48 LH32RF076 0 0760 49 LH32RF073 0 0730 50 LH32RF070 0 0700 51 LH32RF067 0 0670 52 LH32RF065 0 0635 53 LH32RF060 0 0595 54 LH32RF055 0 0550 55 LH32RF052 0 0520 56 LH32RF047 0 0465 57 LH32RF043 0 0430 58 LH32RF042 0 0420 29 48TC Table 11 Altitude Compensation A04 A07 72 000 BTUH 115 000 BTUH 150 000 BTUH ELEVATION Nominal Nominal Nominal ft m NG LP NG LP NG LP Orifice Size Orifice Size Orifice Size Orifice Size Orifice Size Orifice Size 0 2000 610 331 514 331 503 130 463 2000 610 351 514 351 514 130 473 3000 914 35 524 351 514 311 473 4000 1219 361 524 361 514 31 483 5000 1524 36 524 36 514 31 483 6000 1829 372 524 372 524 311 483 7000 2134 38 534 38 524 321 493 8000 2438 39 534 39 524 33 493 9000 2743 140 537 140 534 341 503 10000 3048 141 544 141 534 351 503 11000 3353 142 544 142 534 36 514 12000 3658 143 544 143 544 372 514 13000 3962 143 554 143 544 38 524 14000 4267 44 156 442 554 140 534 Table 11 cont Altitude Compensation A08 A12 125 000 250 000 180 000 224 000 ELEVATION BTUH Nominal BTUH Nominal BTUH Nominal ft m NG Orifice LP Orifice NG Orifice LP Orifice NG Orifice LP Orifice Size Size Size Size Size Size 0 2000 610 31 493 130 463 31 483 2000 610 321 509 130 473 321
69. 2 F and SPT gt OAT 8 F The Unoccupied Free Cool mode will be stopped when SPT lt NTSP or SPT lt OAT 3 F Temperature Compensated Start This function will run when the controller is in unoccupied state and will calculate early start bias time SBT based on space temperature deviation from occupied setpoints in minutes per degree The following conditions will be met for the function to run Unit is in unoccupied state Next occupied time is valid Current time of day is valid Valid space temperature reading is available from sensor or linkage thermostat Cool Start Bias KCOOL and Heat Bias Start KHEAT gt 0 in the CONFIG configuration table The SBT is calculated by one of the following formulas depending on temperature demand If SPT OCSP then SBT SPT OCSP KCOOL If SPT OHSP then SPT OHSP SPT KHEAT The calculated start bias time can range from 0 to 255 minutes When SBT is greater than O the function will subtract the SBT from the next occupied time to calculate a new start time When a new start time is reached the Temperature Compensated Start mode is started This mode energizes the fan and the unit will operate as though it is in occupied state Once set Temperature Compensated Start mode will stay on until the unit returns to occupied state If either Unoccupied Free Cool or IAQ Pre Occupancy mode is active when Temperature Compensated Start begins their mode will end
70. 2 in lbs Changing fan wheel speed by changing pulleys The horsepower rating of the belt is primarily dictated by the pitch diameter of the smaller pulley in the drive system typically the motor pulley in these units Do not install a replacement motor pulley with a smaller pitch diameter than provided on the original factory pulley Change fan wheel speed by changing the fan pulley larger pitch diameter to reduce wheel speed smaller pitch diameter to increase wheel speed or select a new system both pulleys and matching belt s Before changing pulleys to increase fan wheel speed check the fan performance at the target speed and airflow rate to determine new motor loading bhp Use the fan performance tables or use the Packaged Rooftop Builder software program Confirm that the motor in this unit 1s capable of operating at the new operating condition Fan shaft loading increases dramatically as wheel speed is increased To reduce vibration replace the motor s adjustable pitch pulley with a fixed pitch pulley after the final airflow balance adjustment This will reduce the amount of vibration generated by the motor belt drive system COOLING A WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage This system uses Puron refrigerant which has higher pressures than R 22 and other refrigerants No other refrigerant may be used in this system G
71. 202 Fig 45 T 56 Internal Connections TB1 PL E ED TBI PL Gay Ge SEY C08213 Fig 46 PremierLink T 56 Sensor Connect Thermostat A 7 wire thermostat connection requires a 24 v power source and a common connection Use the R and C terminals on the LCTB s THERMOSTAT connection strip for these Connect the thermostat s Y1 Y2 W1 W2 and G terminals to PremierLink TB1 as shown in Fig 47 SPACE LCTB THERMOSTAT THERMOSTAT TB1 PL ER On E DE On E Cc pue ctun APA LCTB THERMOSTAT C08119 Fig 47 Space Thermostat Connections If the 48TC unit has an economizer system and free cooling operation is required a sensor representing Return Air Temperature must also be connected field supplied and installed This sensor may be a T 55 Space Sensor see Fig 43 installed in the space or in the return duct or it may be sensor PNO 33ZCSENSAT installed in the return duct Connect this sensor to TB1 1 and TBI 3 per Fig 44 Temperature resistance characteristic is found in Table 15 Configure the unit for Thermostat Mode Connect to the CCN bus using a CCN service tool and navigate to 38 PremierLink Configuration screen for Operating Mode Default setting is Sensor Mode value 1 Change the value to 0 to reconfigure the controller for Thermostat Mode When the PremierLink is configured for Thermostat Mode these functions are not available Fire Shutdown FSD Remote Occupied RMTOCC Compresso
72. 208 230 1 60 48TM500213 04 48TM500749 07 ge 208 230 3 60 48TM500213 04 48TM500748 06 460 3 60 48TM500213 04 48TM500748 06 575 3 60 48TM500213 04 48TM500215 06 208 230 1 60 48TM500213 04 481M500749 07 das 208 230 3 60 48TM500213 04 48TM500748 06 460 3 60 48TM500213 04 48TM500748 06 575 3 60 48TM500213 04 48TM500215 06 208 230 3 60 48TM500213 04 481M500748 06 A07 460 3 60 48TM500213 04 48TM500748 06 575 3 60 48TM500213 04 48TM500215 06 208 230 3 60 48TM500929 05 48TM500803 05 A08 460 360 48TM500929 05 48TM500803 05 575 3 60 48TM500929 05 48TM500804 05 208 230 3 60 48TM500929 05 48TM500803 05 A09 460 3 60 48TM500929 05 48TM500803 05 575 3 60 48TM500929 05 48TM500804 05 208 230 3 60 48TM500929 05 48TM500803 05 A12 460 360 48TM500929 05 48TM500803 05 575 3 60 48TM500929 05 48TM500804 05 Ali PremierLink 48TM500984 03 Ali RTU MP 48TM500988 04 NOTE Component arrangement on Control Legend on Power Schematic PremierLink and RTU MP control labels overlay a portion of the base unit control label The base unit label drawing and the control option drawing are required to provide a complete unit control diagram 104 APPENDIX VI MOTORMASTER SENSOR LOCATIONS o l EX So h d IER N SENSOR CATION
73. 237 1 21 1293 1 36 1347 1 52 1400 1138 1 01 1201 1 15 1261 1 31 1317 1 47 1370 1 63 1500 1163 1 10 1226 1 25 1285 1 41 1341 1 58 1394 1 75 1600 1189 1 20 1252 1 36 1310 1 53 1365 1 70 1418 1 87 1700 1216 1 31 1277 1 48 1335 1 65 1390 1 83 1442 2 01 1800 1242 1 42 1303 1 60 1361 1 78 1415 1 96 1467 2 15 1900 1270 1 55 1330 1 73 1387 1 92 1441 2 11 1493 2 30 2000 1297 1 68 1357 1 87 1414 2 07 1467 2 26 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AZ506 motor pulley part no KR11HY181 and belt part no KR30AE041 48TC 05 3 Phase 4 Ton Vertical Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1200 666 0 26 778 0 37 871 0 47 952 0 57 1025 0 67 1300 701 0 31 810 0 43 901 0 54 981 0 65 1053 0 76 1400 737 0 36 842 0 49 931 0 62 1010 0 74 1081 0 86 1500 773 0 42 963 0 70 1040 0 84 1110 0 96 1600 810 0 49 909 0 65 994 0 79 1070 0 94 1140 1 08 1700 847 0 57 943 0 73 1027 0 89 1101 1 05 1800 885 0 66 978 0 83 1060 1 00 1133 1 16 1900 923 0 75 1014 0 94 1093 1 11 1231 1 46 2000 962 0 85 1049 1 05 1127 1 24 1263 1 61 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP R
74. 239 1 08 1294 1 18 1400 0 98 1208 1 09 1500 1175 1 09 1600 1700 1800 1900 2000 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied motor pulley part number KR11HY161 and belt part number KR30AEO35 90 APPENDIX III FAN PERFORMANCE cont 48TC 05 3 Phase 4 Ton Horizontal Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg er 0 2 0 4 0 6 0 8 1 0 a RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1200 643 0 23 762 0 34 859 0 46 944 0 58 1020 0 71 1300 675 0 28 790 0 40 886 0 52 969 0 65 1044 0 78 1400 707 0 33 819 0 45 913 0 58 996 0 72 1070 0 86 1500 740 0 38 849 0 52 941 0 66 1023 0 80 1096 0 95 1600 773 0 45 0 59 970 0 73 1050 0 88 1123 1 04 1700 807 0 52 910 0 67 999 0 82 1078 0 98 1150 1 14 1800 841 0 59 942 0 75 1029 0 91 1106 1 08 1177 1 25 1900 875 0 68 974 0 85 1059 1 02 1135 1 19 1205 1 97 2000 910 0 77 1006 0 95 1090 1 13 1165 1 31 1234 1 49 AVAILABLE EXTERNAL STATIC PRESSURE in wg 12 14 1 6 1 8 2 0 CEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 1200 1089 0 84 1153 0 98 1213 142 1270 127 1324 1 42 1300 1113 0 92 1177 1 06 1
75. 3 991 2 16 1041 2 38 1089 2 61 1134 2 85 3500 961 2 18 1013 2 42 1062 2 66 1108 2 91 1153 3 15 3750 985 2 46 1035 2 71 1083 2 97 1129 3 23 1173 3 49 4000 1011 2 76 1059 3 03 1106 3 30 1151 3 58 1194 3 85 4250 1037 3 09 1084 3 38 1130 3 66 1174 3 95 1216 4 24 4500 1064 3 46 1110 3 76 1155 4 06 1198 4 36 1239 4 66 4750 1091 3 85 1137 4 16 1180 4 48 1222 4 80 1263 5 12 5000 1120 4 28 1164 4 61 1207 4 94 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AD912 and belt part no KR29AF051 2 Recommend using field supplied motor pulley part no KR11HY410 48TC 12 3 PHASE 10 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 3000 616 0 79 689 0 97 757 1 16 821 1 36 882 1 57 3250 655 0 96 724 1 16 788 1 37 849 907 1 80 3500 695 1 17 760 1 38 821 1 60 879 1 83 934 2 06 3750 736 1 41 797 1 63 855 1 86 910 2 10 963 2 35 4000 777 1 68 834 1 91 889 2 16 942 2 41 993 2 67 4250 818 1 98 2 23 925 2 49 976 2 75 1025 3 02 4500 860 2 32 912 2 58 962 2 85 1010 3 13 1057 3 41 4750 902 2 69 951 2 97 999 3 26 1046 3 55 1091 3 84 5000 944 3 11 991 3 40 1037 3 70 1082 4 00 1125 4 31 AVAILABLE EX
76. 4 vac to terminals TR and TRI Differential Enthalpy To check differential enthalpy 1 Make sure EconoMi er IV preparation procedure has been performed 2 Place 620 ohm resistor across SO and 3 Place 1 2 kilo ohm resistor across SR and The Free Cool LED should be lit 4 Remove 620 ohm resistor across SO and The Free Cool LED should turn off 5 Return EconoMif er IV settings and wiring to normal after completing troubleshooting 62 Single Enthalpy To check single enthalpy 1 2 3 4 Make sure EconoMi er IV preparation procedure has been performed Set the enthalpy potentiometer to A fully CCW The Free Cool LED should be lit Set the enthalpy potentiometer to D fully CW The Free Cool LED should turn off Return EconoMi er IV settings and wiring to normal after completing troubleshooting DCV Demand Controlled Ventilation and Power Exhaust To check DCV and Power Exhaust 1 Make sure EconoMi er IV preparation procedure has been performed Ensure terminals AQ and AQ1 are open The LED for both DCV and Exhaust should be off The actuator should be fully closed Connect a 9 v battery to AQ positive node and AO negative node The LED for both DCV and Exhaust should turn on The actuator should drive to between 90 and 95 open Turn the Exhaust potentiometer CW until the Exhaust LED turns off The LED should turn off when the po tentiometer is approximately 90 T
77. 4000 4267 483 156 143 554 LEGEND NG Natural Gas LP Liquid Propane As the height above sea level increases there is less oxygen per cubic ft of air Therefore heat input rate should be reduced at higher altitudes T Not included in kit May be purchased separately through dealer Minimum heating entering air temperature When operating on first stage heating the minimum temperature of air entering the dimpled heat exchanger is 50 F continuous and 45 F intermittent for standard heat exchangers and 40 F continuous and 35 F intermittent for stainless steel heat exchangers To operate at lower mixed air temperatures a field supplied outdoor air thermostat must be used to initiate both stages of heat when the temperature is below the minimum required temperature to ensure full fire operation Wire the outdoor air thermostat OALT part no HH22AG106 in series with the second stage gas valve See Fig 39 Set the outdoor air thermostat at 35 F for stainless steel heat exchangers or 45 F for standard heat exchangers This temperature setting will bring on the second stage of heat whenever the ambient temperature is below the thermostat setpoint Indoor comfort may be compromised when 1 CRLPELEV001A00 2 CRLPELEV002A00 3 CRLPELEV003A00 4 CRLPELEV004A00 heating is initiated using low entering air temperatures with insufficient heating temperature rise Thermostat LCTB THI dun T
78. 48TCA04 A12 Nominal 3 to 10 Tons With Puron R 410A Refrigerant Turn to the Experts Service and Maintenance Instructions TABLE OF CONTENTS SAFETY CONSIDERATIONS esses 1 UNIT ARRANGEMENT AND ACCESS 2 SUPPLY FAN BLOWER SECTION 4 COOLING sete eta NEEN DS esu ER LESS 5 PURON R 410A REFRIGERANT 8 COOLING CHARGING CHARTS 9 CONVENIENCE OUTLETS s 14 SMOKE DETECTORS 0000 15 PROTECTIVE DEVICES 0 22 GAS HEATING SYSTEM sees 22 PREMIERLINK CONTROL esses 34 RTU MP CONTROL SYSTEM e 42 ECONOMISER SYSTEMS ssssuuss 55 WIRING DIAGRAMS 63 PRE STAR E DEE 66 START UP GENERAL eeeeeeen 66 START UP PREMIERLINK CONTROL 68 START UP RTU MP CONTROL 68 OPERATING SEQUENCES eeeeeun 71 FASTENER TORQUE VALUES 81 APPENDIX I MODEL NUMBER SIGNIFICANCE 82 APPENDIX II PHYSICAL DATA 83 APPENDIX III FAN PERFORMANCE 87 APPENDIX IV ELECTRICAL DATA 99 APPENDIX V WIRING DIAGRAM LIST 104 APPENDIX VI MOTORMASTER SENSOR LOCATIONS EE 105 UNIT START UP CHECKLIST 107 SAFETY CONSIDERATIONS Installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrica
79. 50 80 Low NO Gas Heat Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT of stages of burners total 1 2 1 2 1 2 3 Rollout switch opens Closes 195 115 195 115 195 115 x Temperature rise min max 20 50 20 50 20 50 Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT e of stages of burners total 1 3 1 3 1 8 DI Rollout switch opens closes 195 115 195 115 195 115 z Temperature rise min max 30 60 30 60 30 60 Connection size 1 2 NPT 1 2 NPT 1 2 NPT 1 2 NPT I of stages of burners total 1 3 1 8 e Rollout switch opens Closes 195 115 195 115 L Temperature rise min max 40 70 40 70 86 APPENDIX III FAN PERFORMANCE General Fan Performance Notes 1 Interpolation is permissible Do not extrapolate 2 External static pressure is the static pressure difference between the return duct and the supply duct plus the static pressure caused by any FIOPs or accessories 3 Tabular data accounts for pressure loss due to clean filters unit casing and wet coils Factory options and accessories may add static pressure losses 4 The Fan Performance tables offer motor drive recommendations In cases when two motor drive combinations would work Carrier recommended the lower horsepower option 5 For information on the electrical properties of Carrier s motors please see the Electrical information section of this book 87 48TC APPENDIX III F
80. 55 or T 56 space sensor must be used T 55 space temperature sensor provides a signal of space temperature to the PremierLink control T 56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants See Table 15 for temperature versus resistance characteristic on the space sensors Connect T 55 See Fig 43 for typical T 55 internal connections Connect the T 55 SEN terminals to TB1 terminals 1 and 3 see Fig 44 CCN COM SENSOR WIRING C08201 Fig 43 T 55 Space Temperature Sensor Wiring TB1 PL 967 96 6 C08212 Fig 44 PremierLink T 55 Sensor 36 Table 16 PremierLink Sensor Usage OUTDOOR AIR RETURN AIR OUTDOOR AIR RETURN AIR APPLICATION TEMPERATURE TEMPERATURE SENSOR SENSOR ENTHALPY SENSOR ENTHALPY SENSOR Differential Dry Bulb Temperature with Deh Required PremierLink CRTEMPSNOO1A00 33ZCT55SPT PremierLink requires 4 20 mA Actuator or equivalent Single Enthalpy with PremierLink Included PremierLink requires Not Used 4 20mA Actuator Requires HH57ACO77 or equivalent Differential Enthalpy SEA Requires Requires with PremierL
81. 61 540 518 a Soles Medium Static 936 911 887 862 838 813 788 764 739 715 690 2 High Static 1084 1059 1035 1010 986 961 936 912 887 863 838 Standard Static 838 813 789 764 739 715 690 665 640 616 591 a CHEZ Medium Static 1084 1059 1035 1010 986 961 936 912 887 863 838 a High Static 1240 1218 1196 1175 1153 1131 1109 1087 1066 1044 1022 NOTE Do not adjust pulley further than 5 turns open m Factory settings 98 APPENDIX IV ELECTRICAL DATA 48TC 04 3 TONS VOLTAGE COMP ea OFM ea IFM V Ph Hz RANGE Max Max MIN MAX RLA LRA WATTS FLA TYPE WATTS AMP Draw EFF at Full Load FLA Std Static 1000 5 1 7096 4 9 208 1 60 187 253 16 6 79 325 1 5 Med Static 1000 54 70 49 Std Static 1000 5 1 7096 4 9 230 1 60 187 253 16 6 79 325 1 5 Med Static 1000 51 7096 49 Std Static 1000 5 1 7096 4 9 208 3 60 187 253 10 4 73 325 1 5 Med Static 1000 5 1 7096 4 9 High Static 2120 5 5 8096 5 2 Std Static 1000 5 1 7096 4 9 230 3 60 187 253 10 4 73 325 1 5 Med Static 1000 5 1 70 4 9 High Static 2120 5 5 80 5 2 Std Static 1000 2 2 70 2 1 460 3 60 414 506 5 8 38 325 0 8 Med Static 2120 2 7 8096 2 6 High Static 2120 2 7 8096 2 6 Std Static 1000 2 0 7196 1 9 575 3 60 518 633 3 8 37 325 0 6 Med Static 2120 2 1 80 2 0 H
82. 69 Module Status Report Modstat Example 53 48TC Table 24 Manufacture Date When troubleshooting you may need to know a control module s manufacture date 2 Then press period 3 Release both buttons Obtain the manufacture date from Notes a Module status report modstat To obtain a modstat with BACview 1 Press Function FN key and hold The report shows the date under Main board hardware Sticker on the back of the main control The serial numbers are unique and contain embedded information module board RMP These first three digits are unique to RTU MP and are used as an identifier Serial No RMPYMxxxxN YM These two digits identify the last digit of the year and month in hex A 10 Oct Bar Coded amp Typed Number of manufacture 74 would represent a date of manufacture of April 2007 XXX These four digits represent the sequential number of units produced for a given product for the mentioned manufacturing time period N This final digit represents the decade and toggles between N and M every ten years Table 25 Basic Protocol Troubleshooting Problem Possible cause Corrective action party vendor No communication with 3rd Incorrect settings on SW1 SW2 and SW3 Verify and correct switch settings Cycle power to RTU MP after changing switch settings RS485 Port has no voltage output Verify RTU MP has correc
83. 87 2 11 1030 2 29 1071 2 46 3400 1007 2 36 1049 2 55 3613 943 2 24 986 2 44 1069 2 83 3825 967 2 51 1010 2 71 1129 3 34 4038 992 2 80 1034 3 02 1150 3 68 4250 1018 3 11 1058 3 34 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied motor pulley part no KR11HY310 fan pulley part no KR11AZ002 and belt part no KR29AF054 96 FAN PERFORMANCE cont 48TC 12 3 PHASE 10 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 3000 579 0 70 660 0 89 732 1 09 799 1 29 860 1 50 3250 613 0 85 690 1 06 760 1 27 823 1 49 883 1 71 3500 648 1 03 721 1 25 788 1 48 850 1 71 907 1 95 3750 683 1 23 753 1 47 817 1 71 877 1 96 933 2 21 4000 719 1 45 786 1 71 848 1 97 905 2 23 959 2 50 4250 756 1 71 819 1 98 879 2 26 934 2 53 987 2 81 4500 792 1 99 2 28 910 2 57 964 2 87 1015 3 16 4750 830 2 31 888 2 62 943 2 92 995 3 23 1044 3 54 5000 867 2 66 923 2 98 976 3 30 1026 3 63 1074 3 95 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 3000 917 1 70 970 1 91 1021 2 13 1070 2 34 1117 2 56 3250 938 1 9
84. 963 2 63 1008 2 86 1051 3 08 1133 3 55 4250 984 2 92 1029 3 15 1071 3 39 1152 3 87 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AK012 and belt part no KR29AF055 2 Recommend using field supplied motor pulley part no KR11HY310 fan pulley part no KR11AZ002 and belt part no KR29AF054 48TC 09 3 PHASE 8 5 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 2550 526 0 51 600 0 65 666 0 79 727 0 93 783 1 07 2763 557 0 62 627 0 77 690 0 92 749 804 1 23 2975 588 0 75 655 0 91 716 1 08 772 1 24 825 1 40 3188 621 0 90 684 1 07 743 1 25 797 1 42 848 1 60 3400 653 1 06 714 1 25 770 1 44 822 1 62 872 1 81 3613 687 1 25 1 45 798 1 65 849 1 84 897 2 04 3825 775 1 67 827 1 88 876 2 09 922 2 30 4038 754 1 69 807 1 91 856 2 13 904 2 35 949 2 57 4250 788 1 94 839 2 17 886 2 41 932 2 64 976 2 88 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 2550 836 1 20 886 1 34 979 1 61 1022 1 74 2763 855 1 37 904 1 52 995 1 82 1037 1 97 2975 875 1 56 923 1 72 1012 2 04 1053 2 20 3188 9
85. AN PERFORMANCE cont 48TC 04 1 Phase 3 Ton Horizontal Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 CEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 900 553 0 14 681 0 22 782 0 32 870 0 42 948 0 53 975 575 0 16 700 0 25 801 0 35 888 0 46 965 0 57 1050 597 0 18 720 0 28 820 0 38 906 0 49 983 0 61 1125 620 0 21 741 0 31 839 0 42 925 0 54 1001 0 66 1200 643 0 23 762 0 34 944 0 58 1020 0 71 1275 667 0 27 783 0 38 963 0 63 1038 0 76 1350 691 0 30 805 0 42 983 0 68 1057 0 82 1425 715 0 34 827 0 47 1002 0 74 1076 0 88 1500 740 0 38 849 0 52 1023 0 80 1096 0 95 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option Field Supplied Drive 900 1019 0 64 1084 0 76 1146 0 89 1203 1 02 1258 1 16 975 1036 0 69 1101 0 81 1162 0 94 1219 1 08 1050 1053 0 74 1118 0 86 1179 1 00 1236 1 14 1125 1071 0 79 1135 0 92 1196 1 06 1253 1 20 1200 1089 0 84 1153 0 98 1213 1 12 1275 1107 0 90 1171 1 04 1231 1 19 1350 1126 0 96 1189 1 11 1425 1144 1 03 1208 1 18 1500 1163 1 10 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recom
86. AT Sensor Alarm sat alarm Ga Automatic wiring error or loose connection The space temperature has risen above the cool High Space Temp Alarm spt hi Alarm Generated Automatic setpoint by more than the desired amount The space temperature has dropped below the Low Space Temp Alarm spt lo Alarm Generated Automatic heat setpoint by more than the desired amount High Supply Air Temp sat hi Alarm Generated Automatic E then 160 dedrees Tor more thanig The supply air temperature is below 35 F for Low Supply Air Temp sat lo Alarm Generated Automatic more than 5 minutes Supply Fan Failed t Alarm Generated Tripped Circuit Breaker Broken belt Bad indoor Ed FRI TALGO sf fail Immediately Automatic fan motor Configuration incorrect Bad fan status disable Operation Switch Alarm Generated Supply Fan in Hand sf hand Ramp down Automatic Bad Fan Status Switch Configuration incorrect Operations M fessor Safety dx compstat Alarm Generated Automatic Compressor would not start P Alarm Generated STO sensor is open or shorted for more then 5 Setpoint Slider Alarm Slide alarm Offset set to zero Automatic seconds Automatic reset timer a e when config Dirty Filter supply fan run time exceeded filter Dirty Filter Alarm filter Alarm Generated ured with or switch configuration wrong without switch Alarm Generated a p A a More than one binary input is configured for the ul Configuration sw_cfg_alarm GE Se same purpose More then o
87. Communication Bus wiring is field supplied and field installed It consists of shielded 3 conductor cable with drain ground wire The cable selected must be identical to the CCN Communication Bus wire used for the entire network See Table 19 for recommended cable Table 19 Recommended Cables MANUFACTURER CABLE PART NO Alpha 2413 or 5463 American A22503 Belden 8772 Columbia 02525 NOTE Conductors and drain wire must be at least 20 AWG stranded and tinned copper Individual conductors must be insulated with PVC PVC nylon vinyl Teflon or polyethylene An aluminum polyester 10046 foil shield and an outer jacket of PVC PVC nylon chrome vinyl or Teflon with a minimum operating temperature range of 20 C to 60 C is required Do not run communication wire in the same conduit as or next to any AC voltage wiring The communication bus shields must be tied together at each system element If the communication bus is entirely within one building the resulting continuous shield must be connected to ground at only one single point If the communication bus cable exits from one building and enters another building the shields must be connected to the grounds at a lightning suppressor in each building one point only Connecting CCN bus NOTE When connecting the communication bus cable a color code system for the entire network is recommended to simplify installation and checkout See Table 20 for
88. E L LI SENSOR D C06033 Fig 75 Supply Air Sensor Location The temperature sensor looks like an eyelet terminal with wires running to it The sensor is located in the crimp end and is sealed from moisture Outdoor Air Lockout Sensor The EconoMi er IV is equipped with an ambient temperature lockout switch located in the outdoor airstream which is used to lock out the compressors below a 42 F 6 C ambient temperature See Fig 70 EconoMi er IV Control Modes IMPORTANT The optional EconoMi er2 does not include a controller The EconoMi er2 is operated by a 4 to 20 mA signal from an existing field supplied controller such as PremierLink control See Fig 72 for wiring information Determine the EconoMi er IV control mode before set up of the control Some modes of operation may require different sensors See Table 22 The EconoMi er IV is supplied from the factory with a supply air temperature sensor and an outdoor air temperature sensor This allows for operation of the EconoMi er IV with outdoor air dry bulb changeover control Additional accessories can be added to allow for different types of changeover control and operation of the EconoMi er IV and unit Outdoor Dry Bulb Changeover The standard controller is shipped from the factory configured for outdoor dry bulb changeover control The outdoor air and supply air temperature sensors are included as standard For this control mode the ou
89. Ein D feudo rp EG zi P YOSNIS bel Uu 34808 122V zm E iow rrgp mos vm n 291 d E JIIVICHOS WIO MOU LEMO i Dr AINO WAT Hat og an H ma f4 A Gef ease E EE ts SOT em au dwqi HED m feo 0D wann 13971 ou nain WA v u304 335 Knie rn lg 480 5320V 61d m EE 19013 48TC PRE START UP A WARNING PERSONAL INJURY HAZARD Failure to follow this warning could result in personal injury or death 1 Follow recognized safety practices and wear pro tective goggles when checking or servicing refri gerant system Do not operate compressor or provide any electric power to unit unless compressor terminal cover is in place and secured Do not remove compressor terminal cover until all electrical sources are disconnected Relieve all pressure from system before touching or disturbing anything inside terminal box if refri gerant leak is suspected around compressor ter minals Never attempt to repair soldered connection while refrigerant system is under pressure Do not use torch to remove any component Sys tem contains oil and refrigerant under pressure To remove a component wear protective goggles and proceed as follows a Shut off electrical power and then gas to unit b Recover refrigerant to relieve all pressure from system using both high pressure and low pressure ports Cut component connection tubing with tubing
90. KET GEAR DRIVEN BAROMETRIC DAMPER RELIEF DAMPER C06022 Fig 71 EconoMi er2 Component Locations 55 48TC FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD SUPPLIED TIME CLOCK PNK Z VIO BLK J BLK ECONOMIZER MOTOR FIELD vin TA D TRAY TRI ACCESSORY UA dl sir IA BLK T o 1 Pst ION P T Se a Tov Logs IREWOTE Por T135 gei msi tn Bic EM Vor w 4 CH 7 BOARD p EI D Li e Posl l sll FOR STD OPEN UNIT 1 REUS leegen e i Bh t TAO O ev Tov O Gm 6 l L Aa 9 9r A01 f v H GRY u d nd ien L A e Dev 5 a m HAL YEL 10 l a m 04 SET NOT USED i any d soll Dies mg 4 2 Py FIELD ACCESSORY IPJ CooL At er cht di l RAT ENTHALPY SENSOR 8 c BLU l Ze 0I e 1 eee EE 5 alo FIELD SPLICE 4 3 l FIELD SPLICE L Al EAR EE d BRN SM ME OG OE PT RR EE LE ceo eee ee 4 E NOT UsED X TAN 5 GRY ORG A TO PWR EXHAUST NOT USED i ACCESSORY Ee LEGEND Potentiom
91. L UNIT SIZE MIN MAX 4 0 in wg 13 0 in wg ue a 996 Pa 8240 Pa Manifold pressure is factory adjusted for NG fuel use Adjust as required to obtain best flame characteristic Table 5 Natural Gas Manifold Pressure Ranges UNIT UNIT HIGH LOW MODEL SIZE FIRE FIRE HANGE JR ap 3251n wg 17 in wg 2 0 5 0 in wg Hi pes 872 Pa 423Pa t 498 1245 Pa bei ay 35in wa Na 2 0 5 0 in wg Hi REM 872 Pa 498 1245 Pa NA Not Available T 3 Phase models only Liquid Propane Accessory packages are available for field installation that will convert the 48TC unit except low NO model to operate with Liquid Propane LP fuels These kits include new orifice spuds new springs for gas valves and a supply line low pressure switch See section on Orifice Replacement for details on orifice size selections Low NOx models include specially sized orifices and use of different flue flow limits and tube baffles Because of these extra features conversion of these models to LP is not recommended Fuel line pressure entering unit gas valve must remain within specified range Table 6 Liquid Propane Supply Line Pressure Ranges UNIT MODEL UNIT SIZE MIN MAX 48TCD E F All 11 0 in wg 13 0 in wg 48TCS R T 2740 Pa 3240 Pa 48TCL M N All NA NA Manifold pressure for LP fuel use must be adjusted to specified range Follow instructions in the ac
92. LEDs for Power Trouble Alarm and Dirty and a manual test reset button on the left side of the housing Air is introduced to the duct smoke detector sensor s sensing chamber through a sampling tube that extends into the HVAC duct and is directed back into the ventilation system through a shorter exhaust tube The difference in air pressure between the two tubes pulls the sampled air through the sensing chamber When a sufficient amount of smoke is detected in the sensing chamber the sensor signals an alarm state and the controller automatically takes the appropriate action to shut down fans and blowers change over air handling systems notify the fire alarm control panel etc The sensor uses a process called differential sensing to prevent gradual environmental changes from triggering false alarms A rapid change in environmental conditions such as smoke from a fire causes the sensor to signal an alarm state but dust and debris accumulated over time does not Duct smoke sensor JE Exhaust tube Exhaust gasket l Sensor housing and electronics zx Cover gasket J ordering option ordering option Pa Plug Sampling tube e L ordered separately g M Ba Sensor cover B Coupling Detail A M S e Magnetic fe test reset switch PES Alarm zl L Power Trouble L Dirty Fig 17 Smoke Detector Sensor C08209 For installations using two sensors the duct
93. Max BHP 1 2 1 2 1 5 e E RPM Range 770 1175 770 1175 1035 1466 pa Motor Frame Size 48 56 56 9 Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal Fan Diameter in 10x 10 10x 10 10x 10 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt 1 Belt T us Max BHP 1 2 1 2 24 2 9 E 8 RPM Range 770 1175 770 1175 1035 1466 1173 1788 sa Motor Frame Size 48 48 56 56 7 Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal 1 Centrifugal Fan Diameter in 10x 10 10x 10 10x 10 10x 10 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt 1 Belt Zo Max BHP 2 4 2 4 2 9 3 7 amp 8 RPM Range 1035 1466 1035 1466 1303 1687 1474 1788 sa Motor Frame Size 56 56 56 56 T Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal 1 Centrifugal Fan Diameter in 10x 10 10 x 10 10x 10 10 x 10 Cond Coil Material Cu Al Cu Al Cu Al Cu Al Coil type 3 8 RTPF 3 8 RTPF 3 8 RTPF 3 8 RTPF Rows FPI 1 17 2 17 2 17 2 17 Total Face Area ft 14 6 12 6 16 5 21 3 Cond fan motor Qty Motor Drive Type 1 Direct 1 Direct 1 Direct 1 Direct Motor HP RPM 1 4 1100 1 4 1100 1 4 1100 1 4 1100 Fan diameter in 22 22 22 22 Filters RA Filter Size in 2 16x25x2 2 16x25x2 2 16x25x2 4 16x16x2 OA inlet screen Size in 1 20x24x1 1 20x24x1 1 20x24x1 1 20x24x1 83 48TC APPENDIX II PHYSICAL DATA cont Physical Data Cooling 7 5 10 TONS 48TC A08 48TC A09 48TC A12 Refrigeratio
94. ND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage Puron R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment A WARNING FIRE EXPLOSION HAZARD Failure to follow this warning could result in personal injury or death Disconnect gas piping from unit when pressure testing at pressure greater than 0 5 psig Pressures greater than 0 5 psig will cause gas valve damage resulting in hazardous condition If gas valve is subjected to pressure greater than 0 5 psig it must be replaced before use When pressure testing field supplied gas piping at pressures of 0 5 psig or less a unit connected to such piping must be isolated by closing the manual gas valve s UNIT ARRANGEMENT AND ACCESS General Fig 1 and Fig 2 show general unit arrangement and access locations FILTER ACCESS PANEL COMPRESSOR ACCESS PANEL 04 07 only OUTDOOR AIR OPENING AND INDOOR COIL ACCESS PANEL C08449 Fig 1 Typical Access Panel Locations CONTROL BOX COMPRESSOR 08 12 only C08450 Fig 2 Blower Access Panel Location Routine Maintenance These items should be part of a routine maintenance program to be checked every month or two until a specific schedule for each can be identified for this installation Quarterly Inspection and 30 day
95. NT SUCTION PSIG TEMP F REFRIGERANT DISCHARGE PSIG TEMP F VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS VERIFY THAT 3 PHASE SCROLL COMPRESSOR IS ROTATING IN CORRECT DIRECTION Copyright 2008 Carrier Corp 7310 W Morris St e Indianapolis IN 46231 Printed in U S A Edition Date 08 08 Catalog No 48TC 28M Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces 48TC 1SM 107
96. OAT TEMPBAND ESG 1 If the OAT lt DXLOCK DX Cool Lockout setpoint then the damper will be modulated to maintain the SAT at the ECONSR value If the OAT is between DXLOCK and 68 F DXLOCK lt OAT lt 68 F and additional cooling is required the economizer will close the to minimum position for three minutes the economizer integrator will then be reset to 0 and begin modulating to maintain the SASP after the stage has been energized for about 90 seconds This will allow the economizer to calculate a new ECONSR that takes into account the cooling effect that has just been turned on and not return to the value require before the cooling was added This will prevent the economizer from causing premature off cycles of compressors while maintaining the low SAT temperature setpoint for the number of stages active In addition to preventing compressor short cycling by using return air across the evaporator coil just after the compressor has started allows for increased refrigerant flow rates providing for better oil return of any oil washed out during compressor start up If the OAT gt 68 F and OAT lt SPT and the number of DX stages requested is gt 0 by the staging algorithm then ECONSR is set to its minimum value 48 F and the damper will go to 100 open If the Auxiliary Relay is configured for exhaust fan AUXOUT 1 in the CONFIG configuration table and Continuous Power Exhaust MODPE is Enable in the SERVICE configu
97. OTE The enthalpy control must be set to the D setting for differential enthalpy control to work properly The enthalpy control receives the indoor and return enthalpy from the outdoor and return air enthalpy sensors and provides a dry contact switch input to the PremierLink controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position Indoor Air Quality CO sensor The indoor air quality sensor accessory monitors space carbon dioxide CO levels This information is used to monitor IAQ levels Several types of sensors are available for wall mounting in the space or in return duct with and without LCD display and in combination with space temperature sensors Sensors use infrared technology to measure the levels of CO present in the space air The CO sensors are all factory set for a range of 0 to 2000 ppm and a linear mA output of 4 to 20 Refer to the instructions supplied with the CO sensor for electrical 39 48TC requirements and terminal locations See Fig 50 for typical CO sensor wiring schematic 10VDC G COM 4 6 20mA J4 5 RELAY CONTACTS C07134 Fig 50 Indoor Outdoor Air Quality CO2 Sensor 33ZCSENCO2 Typical Wiring Diagram To accurately monitor the quality of the air in the conditioned air space locate the sensor near a return air grille i
98. PM BHP Medium Static Option High Static Option 1200 1093 0 77 1155 0 87 1213 0 96 1268 1 05 1321 1 14 1300 1119 0 87 1181 0 98 1239 1 08 1294 1 18 1346 1 28 1400 1147 0 98 1208 1 09 1265 1 21 1320 1 32 1371 1 43 1500 1175 1 09 1235 1 22 1292 1 34 1346 1 46 1397 1 58 1600 1204 1 21 1263 1 35 1320 1 48 1373 1 61 1424 1 74 1700 1233 1 34 1292 1 49 1348 1 63 1401 1 77 1451 1 91 1800 1262 1 48 1321 1 64 1376 1 79 1428 1 94 1479 2 09 1900 1293 1 63 1350 1 79 1405 1 96 1457 2 12 1506 2 28 2000 1323 1 79 1380 1 96 1434 2 13 1486 2 31 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AZ506 motor pulley part no KR11HY181 and belt part no KR3OAEO41 91 48TC APPENDIX III FAN PERFORMANCE cont 48TC 06 1 Phase 5 Ton Horizontal Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1500 800 0 39 904 0 49 999 0 60 1087 0 72 1169 0 85 1625 849 0 48 947 0 59 1038 0 70 1122 1201 0 96 1750 899 0 59 992 0 70 1078 0 82 1235 1 08 1875 950 0 70 1038 0 82 1120 0 95 1271 1 22 2000 1001 0 84 1085 0 96 1309 1 38 2125 1 12 2250 2375 2500
99. PUT SPARK GAP 120 141 IN 3 05 3 56 mm DETAIL C SPARK GAP MUST BE PO 181 IN 4 60 mm zi DETAIL EI SITIONED TO IGNITE ON FIRST TRY PLACE SPARK GAP WITHIN BURNER CIRCUMFERENCE AS SHOWN C06154 Fig 35 Spark Adjustment 04 07 26 SPARK GAP 120 TO 140 180 000 120 000 BTUH INPUT SEE 240 000 180 000 BTUH INPUT DETAIL 250 000 200 000 BTUH INPUT son SPARK GAP 120 TO 140 DETAIL C C08447 Fig 36 Spark Adjustment 08 12 Table 8 LED Error Code Description IMPORTANT Refer to Troubleshooting Table 13 and Table 14 for additional information ERROR CODE l LED INDICATION DESCRIPTION Orifice Replacement ON Normal Operation This unit uses orifice type LH32RFnnn where nnn OFF Hardware Failure indicates orifice reference size When replacing unit 1 Flasht Evaporator Fan On Off Delay Modified orifices order the necessary parts via Carrier RCD See 2 Flashes Limit Switch Fault Table 10 for available orifice sizes See Table 11 and 3 Flashes Flame Sense Fault Table 12 for orifice sizes for Natural Gas and LP fuel 4 Flashes 4 Consecutive Limit Switch Faults usage at various elevations above sea level ki anto PA Check that each replacement orifice is tight at its threads 6 Flashes Induced Draft Motor Fault into the manifold pipe and that orifice projec
100. PremierLink causes the filter status point to read DIRTY Using Filter Timer Hours Refer to Form 33CS 58SI for instructions on using the PremierLink Configuration screens and on unit alarm sequence Supply Fan Status Switch The PremierLink control can monitor supply fan operation through a field supplied installed differential pressure switch This sequence will prevent or interrupt operation of unit cooling heating and economizer functions until the pressure switch contacts are closed indicating proper supply fan operation Install the differential pressure switch in the supply fan section according to switch manufacturer s instructions Arrange the switch contact to be open on no flow and to close as pressure rises indicating fan operation Connect one side of the switch s NO contact set to LCTB s THERMOSTAT R terminal Connect the other side of the NO contact set to TB1 8 Setpoint for Supply Fan Status is set at the switch See Fig 55 Fan Pressure Switch NO close on rise in pressure LCTB Thermostat TB1 PL e C08118 Fig 55 PremierLink Wiring Fan Pressure Switch Connection Remote Occupied Switch The PremierLink control permits a remote timeclock to override the control s on board occupancy schedule and place the unit into Occupied mode This function may also provide a Door Switch time delay function that will terminate cooling and heating functions after a 2 20 minute delay Connect one side of
101. Runtime clear the d np Alarm dx1 rntm Alarm Generated timer Compressor run time limit is exceeded Compressor 2 Runtime clear the a n Alarm dx2 rntm Alarm Generated timer Compressor run time limit is exceeded 51 48TC Alarms Alarms can be checked through the network and or the local access All the alarms are listed in Table 23 with name object name action taken by control reset method and probable cause There are help screens for each alarm on the local access display and listed in Form 48 50H T 2T Appendix A Help Screens Some alarms are explained in detail below Safety Chain Alarm This alarm occurs immediately if the supply fan internal overload trips or if an electric heat limit switch trips The Unit Status will be Shutdown and the System Mode will be Disable When this happens LCTB R terminal will not have 24 VAC but the RTU MP board will still be powered All unit operations stop immediately and will not restart until the alarm automatically clears There are no configurations for this alarm it is all based on internal wiring This alarm will never occur if Fire Shutdown Alarm is active Fire Shutdown Alarm This alarm occurs immediately when the smoke detector senses smoke The Unit Status will be Shutdown and the System Mode will be Disable All unit operations stop immediately and will not restart until the alarm automatically clears If there is not a smoke detector installed or the smoke detector d
102. S POT USE COPPER CONDUCTOR ONLY PM R RAT RS SAT TB TRAN BLK 460V VIO 208 230V CONTACTOR COMPRESSOR CAPACITOR CIRCUIT BREAKER CRANKCASE HEATER COMPRESSOR MOTOR DIRECT DIGITAL CONTROL GAS VALVE RELAY HIGH PRESSURE SWITCH HALL EFFECT SENSOR IGNITOR INDOOR AIR QUALITY SENSORS INDOOR FAN CONTACTOR INDOOR FAN MOTOR INTEGRATED GAS CONTROL LOW AMBIENT LOCKOUT LOW PRESSURE SWITCH LIMIT SWITCH MAIN GAS VALVE OUTDOOR AIR TEMP OUTDOOR FAN MOTOR OVERLOAD RELAY PLUG ASSEMBLY POTENTIOMETER PHASE MONITOR RELAY QUADRUPLE TERMINAL RELAY RETURN AIR TEMP SEN ROLLOUT SWITCH SUPPLY AIR TEMP SEN TERMINAL BLOCK TRANSFORMER SEN C08308 Fig 83 48TC Typical Unit Wiring Diagram Power A06 208 230 3 60 90V Iomg03 WeBIBEIQ SUM VUN OLSH F8 SLI 65
103. Strips Sponge Rubber Assembly Regulator Baffle Assembly Low NOx only Retainer Support Insulation Assembly Wind Cap Assembly shown inverted as shipped Flue Baffle Low NOx only Inducer Fan Motor Assembly Burner Assembly C08227 Fig 31 Heat Exchanger Assembly 24 Burners and Igniters A CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage When working on gas train do not hit or plug orifice spuds Main Burners To access burners remove burner access panel and slide out burner partition At the beginning of each heating season inspect for deterioration or blockage due to corrosion or other causes Observe the main burner flames and adjust if necessary Orifice projection Refer to Fig 32 for maximum projection dimension for orifice face to manifold tube i a Orifice T r le l 1 00 in a 25 4 mm BJ Manifold Pipe C08211 Fig 32 Orifice Projection Removal and Replacement of Gas Train See Fig 27 Fig 31 and Fig 33 1 Shut off manual gas valve Shut off power to unit 2 3 Slide out burner partition 4 Disconnect gas piping at unit gas valve 5 Remove wires connected to gas valve Mark each wire MANIFOLD PRESSURE TAP GAS VALVE BURNERS C06153 Fig 33 Burner Tray Details 6 Remove igniter wire
104. T gt UCSP Unoccupied Cooling Deadband The indoor fan will be turned on by the staging algorithm e OAT DXLOCK or OAT DX Lockout is disabled If all of the above conditions are met the CCSR will be calculated otherwise it is set to its maximum value and DX stages is set to 0 If only the last condition is not true and an economizer is available it will be used to cool the space The submaster loop uses the CCSR compared to the actual SAT to determine the required number of capacity stages to satisfy the load There is a programmable minimum internal time delay of 3 to 5 minutes on and 2 to 5 minutes off for the compressors to prevent short cycling There is also a 3 minute time delay before bringing on the second stage compressor If the PremierLink controller is configured for Heat Pump and AUXOUT is configured for Reversing Valve Cool the H3 EX RV output will energize 2 seconds after the first compressor is energized and stay energized until there is a demand for heat If AUXOUT is configured for Reversing Valve Heat then the H3 EX RV contact will be deenergized when there is a demand for cooling An internal 5 to 10 minute user programmable time guard between modes prevents rapid cycling between modes when used in a single zone application The Time Guard is lowered to 3 minutes when Linkage is active to allow the 3V linkage coordinator to have better control of the PremierLink controller when used as the air source for the 3
105. T59SPT space temperature sensor with LCD liquid crystal display screen override button and setpoint adjustment Use 20 gauge wire to connect the sensor to the controller The wire is suitable for distances of up to 500 ft Use a three conductor shielded cable for the sensor and setpoint adjustment connections If the setpoint adjustment slidebar is not required then an unshielded 18 or 20 gauge two conductor twisted pair cable may be used Connect T 55 See Fig 43 for typical T 55 internal connections Connect the T 55 SEN terminals to RTU MP J20 1 and J20 2 See Fig 61 C08460 Fig 61 RTU MP T 55 Sensor Connections Connect T 56 See Fig 45 for T 56 internal connections Install a jumper between SEN and SET terminals as illustrated Connect T 56 terminals to RTU MP J20 1 J20 2 and J20 3 per Fig 62 C08461 Fig 62 RTU MP T 56 Sensor Connections Connect T 59 The T 59 space sensor requires a separate isolated power supply of 24 VAC See Fig 61 for internal connections at the T 59 Connect the SEN terminal BLU to RTU MP J20 1 Connect the COM terminal BRN to J20 2 Connect the SET terminal STO or BLK to J20 3 EE ___BRN COM BLK STO SENSOR ER cr umm WIRING BLU SPT l l l l l l SET SEN I l OJO OPB COM PWR NOTE Must use a separate isolated transformer C07132 Fig 63 Space Temperature Sensor Typical Wiring 33ZCT59SPT Economizer controls Out
106. TERNAL STATIC PRESSURE in wg CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 3000 939 1 79 994 2 01 1047 2 24 1098 2 47 1147 2 71 3250 962 2 03 1015 2 26 1066 2 50 1115 2 75 1163 3 00 3500 987 2 30 1038 2 54 1135 3 05 1181 3 32 3750 1014 2 60 1063 2 86 1157 3 39 1202 3 66 4000 1136 3 48 1180 3 76 1224 4 04 4250 1162 3 87 1205 4 16 4500 1103 3 70 1147 4 00 1232 4 60 4750 1135 4 14 1177 4 45 5000 1167 4 63 1209 4 95 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied motor pulley part no KR11HY410 97 48TC APPENDIX III FAN PERFORMANCE cont Pulley Adjustment UNIT MOTOR DRIVE MOTOR PULLEY TURNS OPEN COMBO 00 05 10 15 20 25 30 35 40 45 50 5 Standard Static 854 825 795 766 736 707 678 648 619 589 560 a Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770 d High Static PEE Standard Static 854 825 795 766 736 707 678 648 619 589 560 a n Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770 2 High Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035 B Standard Static 854 825 795 766 736 707 678 648 619 589 560
107. V control system Table 29 indicates the number of stages available The staging algorithm looks at the number of stages available based the number of cool stages configured in the SERVICE configuration table The algorithm will skip the economizer if it is not available and turn on a compressor Table 29 Available Cooling Stages NUMBER OF 0 1 2 3 STAGES ECONOMIZER Compressor 1 Off Off On On Compressor2 Off Off Off On If conditions are suitable for economizer operation Any time the compressors are running the PremierLink controller will lockout the compressors if the SAT becomes too low These user configurable settings are found in the SERVICE configuration table Compressor 1 Lockout at SAT SATLOI 50 to 65 F default is 55 F Compressor 2 Lockout at SAT lt SATLO2 45 to 55 F default is 50 F After a compressor is locked out it may be started again after a normal time guard period and the supply air temperature has increased at least 8 F above the lockout setpoint Dehumidification The PremierLink controller will provide occupied and unoccupied dehumidification control when AUXOUT 5 in the CONFIG table and is installed on HVAC units that are equipped with additional controls and accessories to accomplish this function This function also requires a space relative humidity sensor be installed on the OAQ IRH input 74 When in the occupied mode and the indoor r
108. XHAUST DISC SIZE DISC SIZE MCA MOCP FLA LRA MCA MOCP FLA LRA STD 39 5 60 38 191 43 3 60 43 195 208 230 3 60 MED 0 48 3 8 41 8 60 41 228 45 6 60 45 232 HIGH 49 3 60 49 254 53 1 60 54 258 S STD 19 5 30 19 113 21 3 30 21 115 460 3 60 MED 0 25 1 8 20 3 30 20 132 22 1 30 22 134 2 HIGH 24 3 30 24 145 26 1 30 26 147 STD 14 9 20 14 89 18 7 25 19 93 575 3 60 MED 0 24 38 15 3 20 15 104 19 1 25 19 108 HIGH 18 1 25 18 118 21 9 30 23 122 STD 45 1 60 43 222 48 9 60 48 226 208 230 3 60 MED 0 48 3 8 45 1 60 43 233 48 9 60 48 237 HIGH 49 9 60 49 276 53 7 80 53 280 S STD 22 6 30 22 108 24 4 30 24 110 460 3 60 MED 0 25 1 8 22 6 30 22 114 24 4 30 24 116 2 HIGH 24 4 30 24 136 26 2 30 26 138 STD 18 9 30 18 91 22 7 30 23 95 575 3 60 MED 0 24 38 18 5 30 18 95 22 3 30 22 99 HIGH 19 3 30 19 106 23 1 30 23 110 STD 45 8 60 44 263 49 6 60 48 267 208 230 3 60 MED 0 48 38 50 6 60 50 306 54 4 80 54 310 HIGH 55 6 80 55 315 59 4 80 60 319 T STD 25 1 30 24 133 26 9 40 26 135 460 3 60 MED 0 25 1 8 26 9 40 26 155 28 7 45 28 157 2 HIGH 29 9 45 30 159 31 7 45 32 161 STD 18 5 30 18 95 22 3 30 22 99 575 3 60 MED 0 24 38 19 3 30 19 106 23 1 30 23 110 HIGH 22 1 30 22 120 25 9 30 26 124 1Fuse or breaker Example Supply voltage is 230 3 60 LEGEND A BC CO Convenient outlet AB 224 v DISC Disconnect C US A BC 281v FLA Full load amps AC 226v IFM Indoor fan motor LRA Locked rotor amps 224 231 226 681 MCA Minimum circuit amps Average
109. Year of manufacture 08 2008 5 Manufacturing location G ETP Texas USA 6 10 Sequential number 82 APPENDIX II PHYSICAL DATA Physical Data Cooling 3 6 TONS 48TC A04 48TC A05 48TC A06 48TC A07 Refrigeration System Circuits Comp Type 1 1 Scroll 1 1 Scroll 1 1 Scroll 1 1 Scroll Puron R 410a charge A B Ibs 5 6 8 5 10 7 14 1 Cil A B oz 25 42 42 56 Metering Device Acutrol Acutrol Acutrol Acutrol High press Trip Reset psig 630 505 630 505 630 505 630 505 Low press Trip Reset psig 54 117 54 117 54 117 54 117 Evap Coil Material Cu AI Cu Al Cu Al Cu A Coil type 3 8 RTPF 3 8 RTPF 3 8 RTPF 3 8 RTPF Rows FPI 2 15 2 15 4 15 4 15 Total Face Area ft 5 5 5 5 5 5 7 3 Condensate Drain Conn Size 3 4 3 4 3 4 3 4 Evap Fan and Motor 2 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt ER Max BHP 12 1 2 1 2 ves RPM Range 560 854 560 854 770 1175 De Motor Frame Size 48 48 48 S S Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal 2 Fan Diameter in 10x10 10x10 10x10 2 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt 1 Belt 3 a Max BHP 1 2 1 2 1 2 2 4 en RPM Range 560 854 560 854 770 1175 1073 1457 EK Motor Frame Size 48 48 48 56 EP Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal 1 Centrifugal 7 Fan Diameter in 10x10 10x10 10x10 10x10 o Motor Qty Drive Type 1 Belt 1 Belt 1 Belt So
110. able screw in Edison base type plug fuse Using unit mounted convenience outlets Units with unit mounted convenience outlet circuits will often require that two disconnects be opened to de energize all power to the unit Treat all units as electrically energized until the convenience outlet power is also checked and de energization is confirmed Observe National Electrical Code Article 210 Branch Circuits for use of convenience outlets SMOKE DETECTORS Smoke detectors are available as factory installed options on 48TC models Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air Return Air smoke detectors are arranged for vertical return configurations only All components necessary for operation are factory provided and mounted The unit is factory configured for immediate smoke detector shutdown operation additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements System The smoke detector system consists of a four wire controller and one or two sensors Its primary function is to shut down the rooftop unit in order to prevent smoke from circulating throughout the building It is not to be used as a life saving device Controller The controller see Fig 16 includes a controller housing a printed circuit board and a clear plastic cov
111. ae ae eel Gebees yo o poto Court iibi RES l 129 4 on peer W 1 W aj fE A V uS EE e 1 l WHT 2 Si li L l J i jd l ed DC f l I l o RN C h l I La i lt 3 B T STAT elt H tap Dod T Lad la EES ak LEG i E od quim S l5 ft LS l X PuKI V H e i l Ge ffe Ek C08246 Fig 23 Typical Smoke Detector System Wiring Highlight C 24 v power signal via ORN lead is removed at Smoke Detector input on LCTB all unit operations cease immediately PremierLink and RTU MP Controls Unit operating functions fan cooling and heating are terminated as described above In addition Highlight D On smoke alarm condition the smoke detector NO Alarm contact will close supplying 24 v power to GRA conductor Highlight E GRA lead at Smoke Alarm input on LCTB provides 24 v signal to FIOP DDC control Premier Link This signal is conveyed to PremierLink FIOP s TB1 at terminal TB1 6 BLU lead This signal initiates the FSD sequence by the PremierLink control FSD status is reported to connected CCN network RTU MP The 24 v signal is conveyed to RTU MP s J1 10 input terminal This signal initiates the FSD sequence by the RTU MP control FSD status is reported to connected BAS network Using Remote Logic Five conductors are provided for field use see Highlight F for additional annunciation functions Additional Application Data Refer to Catalog No HKRNKA 1XA for discussions on additional
112. age Determine cause and correct Blocked condenser Determine cause and correct Defective run start capacitor overload or start relay Determine cause and replace Defective thermostat Replace thermostat Faulty condenser fan motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor Operates Continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too low Reset thermostat Low refrigerant charge Locate leak repair and recharge Leaking valves in compressor Replace compressor Excessive Head Pressure Air in system Recover refrigerant evacuate system and recharge Condenser coil dirty or restricted Clean coil or remove restriction Dirty air filter Replace filter Dirty condenser coil Clean coil Refrigerant overcharged Recover excess refrigerant Air in system Recover refrigerant evacuate system and recharge Condenser air restricted or air short cycling Determine cause and correct Head Pressure Too Low Low refrigerant charge Check for leaks repair and recharge Compressor valves leaking Replace compressor Restriction in liquid tube Remove restriction Excessive Suction Pressure High head load Check for source and eliminate Compre
113. ailable or the conditions are not met for the following economizer routines below the compressors 1 and 2 will be cycled based on Y1 and Y2 inputs respectively Any time the compressors are running the PremierLink controller will lock out the compressors if the SAT becomes too low These user configurable settings are found in the SERVICE configuration table Compressor 1 Lockout at SAT lt SATLO1 50 to 65 F default is 55 F Compressor 2 Lockout at SAT lt SATLO2 45 to 55 F default is 50 F After a compressor is locked out it may be started again after a normal time guard period and the supply air temperature has increased at least 8 F above the lockout setpoint Routine No 1 If the OAT s DXLOCK OAT DX lockout temperature and DX Cooling Lockout is enabled when Y1 input is energized the economizer will be modulated to maintain SAT at the Supply Air Setpoint SASP SAILO1 3 F Supply Air Low Temp lockout for compressor 1 When Y2 is energized the economizer will be modulated to control to a lower SASP SATLO2 3 F Supply Air Low Temp lockout for compressor no 2 Mechanical cooling is locked out and will not be energized Routine No 2 If DXLOCK or DX Cooling Lockout is disabled lt OAT lt 68 F when Y1 input is energized the economizer will be modulated to maintain SAT at SASP SATLO1 3 F If the SAT gt SASP 5 F and the economizer position gt 85 then the economizer will close the to
114. and AUXOUT Reversing Valve Heat the H3 EX RV output will stay energized until there is a cool demand HEAT STAGES 1 33 capacity if shall energize CMP1 CMP2 RVS HEAT STAGES 2 66 capacity shall energize HS1 HEAT STAGES 3 100 capacity shall energize HS2 If AUXOUT is configured for Reversing Valve Cool then the H3 EX RV contact will be deenergized when there is a demand for heating The heat stages will be cycled to temper the SAT so that it will be between the SPT and the SPT 10 F SPT lt SAT lt SPT 10 P if the number of heat stages calculated is zero the OAT lt 55 F an IAQ sensor is installed the IAQ Minimum Damper Position gt minimum damper position e and the SAT lt SPT 10 F There is also a SAT tempering routine that will act as SAT low limit safety to prevent the SAT from becoming too cold should the economizer fail to close One stage of heating will be energized if it is not in the Cooling or Free Cooling mode and the OAT is below 55 F and the SAT is below 40 F It will deenergize when the SAT gt SPT 10 F Indoor Air Quality If the optional indoor air quality IAQI sensor is installed the PremierLink controller will maintain indoor air quality within the space at the user configured differential setpoint IAQD in the CONFIG configuration table The setpoint is the difference between the IAQI and an optional outdoor air quality sensor OAQ If the OAQ is not pr
115. art number KR29AF035 48TC 07 3 Phase 6 Ton Vertical Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1800 967 0 63 1075 0 80 1255 1 13 1333 1 28 1950 1029 0 77 1132 0 96 1306 1 32 1382 1 49 2100 1091 0 93 1189 1 14 1358 1 52 1433 1 71 2250 1333 1 55 1411 1 75 1484 1 96 2400 1218 1 32 1308 1 55 1390 1 78 1466 2 01 2550 1283 1 55 1369 1 80 1448 2 05 1521 2700 1348 1 80 1431 2 07 1507 2 33 1578 2 59 1645 2 84 2850 1414 2 09 1493 2 37 1566 2 65 1636 2 92 1701 3 19 3000 1479 2 40 2 70 1627 3 00 1694 3 29 1757 3 57 AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 1800 1406 1 43 1475 1 58 1540 1 72 1601 1 87 1660 2 00 1950 1454 1 65 1521 1 82 1585 1 98 1645 2 13 1703 2 29 2100 1502 1 89 1631 2 25 1690 2 42 1747 2 59 2250 1552 2 15 1617 2 35 1678 2 54 1737 2 73 2400 1727 2 86 1784 3 06 2550 1887 3 64 2700 2850 3000 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part number KR11AZ506 motor pulley part number KR11HY191 and belt part number KR29AF042
116. ast of time of day functions occupied unoccupied NOTE PremierLink controller is shipped in Sensor mode To be used with a thermostat the PremierLink controller must be configured to Thermostat mode Refer to PremierLink Configuration instructions for Operating Mode FIOP equipped 48TC unit the unit is supplied with a supply air temperature SAT sensor 33ZCSENSAT This sensor is a tubular probe type approx 6 inches 12 7 mm in length It is a nominal 10 k ohm thermistor See Table 15 for temperature resistance characteristic The SAT is factory wired The SAT probe is wire tied to the supply air opening on the horizontal opening end in its shipping position Remove the sensor for installation Re position the sensor in the flange of the supply air opening or in the supply air duct as required by local codes Drill or punch a 1 2 in hole in the flange or duct Use two field supplied self drilling screws to secure the sensor probe in a horizontal orientation See Fig 41 ROOF CURB SUPPLYAIR fi TEMPERATURE f SENSOR A XS J C SUPPLY AIR LI RETURN AIR Y NS VA LA W LA AS C08200 Fig 41 Typical Mounting Location for Supply Air Temperature SAT Sensor on Small Rooftop Units 34 ogeuroqog SULA YUN TAWA cp BLIJ 872809 9r TE au es k8088320 a ana AG TWHING MOKED me NOTLdO XNI TH3IN3Ud
117. auge set hoses and recovery system must be designed to handle Puron refrigerant If unsure about equipment consult the equipment manufacturer Condenser Coil The condenser coil is fabricated with round tube copper hairpins and plate fins of various materials and or coatings see Model Number Format in the Appendix to identify the materials provided in this unit The coil may be one row or composite type two row Composite two row coils are two single row coils fabricated with a single return bend end tubesheet Condenser Coil Maintenance and Cleaning Recommendation Routine cleaning of coil surfaces is essential to maintain proper operation of the unit Elimination of contamination and removal of harmful residues will greatly increase the 5 48TC life of the coil and extend the life of the unit The following maintenance and cleaning procedures are recommended as part of the routine maintenance activities to extend the life of the coil Remove Surface Loaded Fibers Surface loaded fibers or dirt should be removed with a vacuum cleaner If a vacuum cleaner is not available a soft non metallic bristle brush may be used In either case the tool should be applied in the direction of the fins Coil surfaces can be easily damaged fin edges can be easily bent over and damage to the coating of a protected coil if the tool is applied across the fins NOTE Use of a water stream such as a garden hose against a surface loa
118. aust is installed the power exhaust fan motors will be energized by the economizer control as the dampers open above the PE On setpoint and will be de energized as the dampers close below the PE On setpoint Damper movement from full closed to full open or vice versa will take between 1 1 2 and 2 1 2 minutes Heating With EconoMi er IV During Occupied mode operation indoor fan operation will be accompanied by economizer dampers moving to Minimum Position setpoint for ventilation If indoor fan is off dampers will close During Unoccupied mode operation dampers will remain closed unless a DCV demand is received When the room temperature calls for heat W1 closes the heating controls are energized as described in Heating Unit Without Economizer above PremierLink Control THERMOSTAT MODE If the PremierLink controller is configured for Thermostat mode TSTAT it will control only to the thermostat inputs on J4 These inputs can be overridden through CCN communication via the CV_TSTAT points display table When in this mode the fire safety shutdown FSD input cannot be used so any fire life safety shutdown must be physically wired to disable the 24 vac control circuit to the unit Indoor Fan The indoor fan output will be energized whenever there is 24 vac present on the G input The indoor fan will be turned on without any delay and the economizer damper will open to its minimum position if the unit has a damper con
119. bserve national and local codes when selecting wire size fuse or 14 breaker requirements and disconnect switch size and location Route 125 v power supply conductors into the bottom of the utility box containing the duplex receptacle Unit powered type A unit mounted transformer is factory installed to stepdown the main power supply voltage to the unit to 115 v at the duplex receptacle This option also includes a manual switch with fuse located in a utility box and mounted on a bracket behind the convenience outlet access is through the unit s control box access panel See Fig 14 The primary leads to the convenience outlet transformer are not factory connected Selection of primary power source is a customer option If local codes permit the transformer primary leads can be connected at the line side terminals on a unit mounted non fused disconnect or HACR breaker switch this will provide service power to the unit when the unit disconnect switch or HACR switch is open Other connection methods will result in the convenience outlet circuit being de energized when the unit disconnect or HACR switch is open See Fig 15 SWA 5 SCHEMATIC CONVENIENCE OUTLET 460V RED YEL BLU GRA e e GRA CONNECT PER RED LOCAL CODE TRAN4 anm 9 YEL 240V w gay D RED YEL BLU GRA e 2 SECONDARY cm amp 5 db amp EE TRAN
120. ce the standard outdoor dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location See Fig 79 When the outdoor air enthalpy rises above the outdoor enthalpy changeover setpoint the outdoor air damper moves to its minimum position The outdoor enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the EconoMi er IV controller The setpoints are A B C and D See Fig 80 The factory installed 620 ohm jumper must be in place across terminals Sp and SR on the EconoMi er IV controller 85 90 295 100 105 110 38 41 43 5 60 65 70 75 80 85 290 95 100 a 7 APPROXIMATE DRY BULB TEMPERATURE degrees F degrees C 10 13 16 18 21 24 27 29 32 35 38 41 43 C06037 Fig 80 Enthalpy Changeover Setpoints 59 48TC E Q gs z z E 43 N T HOTZ 0 o Sr o 23 N lt ov lt 9 N lt 2 Je E CH 8 GO EI Oo Tee C06038 Fig 81 EconoMi er IV Control Differential Enthalpy Control For differential enthalpy control the EconoMi er IV controller uses two enthalpy sensors HH57ACO78 and CRENTDIFOO4A00 one in the outside air and one in the retum air duct The EconoMi er IV controller compares the outdoor air enthalpy to
121. cessory kit to make initial readjustment Table 7 Liquid Propane Manifold Pressure Ranges UNIT MODEL UNIT SIZE HIGH FIRE LOW FIRE SE All 10 0 in wg 5 0 in wg 4BTCFT 2490 Pa 1245 Pa t 48TCL 48TCM All NA NA 48TCN NA Not Available T 3 Phase models only Supply Pressure Switch The LP conversion kit includes a supply low pressure switch The switch contacts from terminal C to terminal NO will open the gas valve power whenever the supply line pressure drops below the setpoint See Fig 29 and Fig 30 If the low pressure remains open for 15 minutes during a call for heat the IGC circuit will initiate a Ignition Fault 5 flashes lockout Reset of the low pressure switch is automatic on rise in supply line pressure Reset of the IGC requires a recycle of unit power after the low pressure switch has closed C08238 Fig 29 LP Low Pressure Switch Installed IGC LP LPS BRN C_ O O NO en BRN J2 11 ZEN IGC GRA J2 12 TSTAT W2 PNK Co8285 Fig 30 LP Supply Line Low Pressure Switch Wiring 23 48TC This switch also prevents operation when the propane tank season inspect blower wheel bi monthly to determine level is low which can result in gas with a high proper cleaning frequency concentration of impurities additives and residues that have settled to the bottom of the tank Operation under these condit
122. compressor s tube plugs until ready to insert the unit suction and discharge tube ends Compressor mounting bolt torque is 65 75 ft lbs Compressor Rotation On 3 phase units with scroll compressors it is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gauges to suction and discharge pres sure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pressure should rise as is normal on any start up NOTE If the suction pressure does not drop and the discharge pressure does not rise to normal levels 4 Note that the evaporator fan is probably also rotating in the wrong direction 5 Turn off power to the unit 6 Reverse any two of the unit power leads 7 Reapply power to the compressor The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direction the unit makes an elevated level of noise and does not provide cooling Filter Drier Replace whenever refrigerant system is exposed to atmosphere Only use factory specified liquid line filter driers with working pressures no less than 650 psig Do not install a suction line filter drier in liquid line A liquid line filter drier designed for use with Puron refrigerant is required on every unit Condenser Fan Adjustment 1 Shut off un
123. control features of these smoke detectors including multiple unit coordination See Fig 23 Sensor and Controller Tests Sensor Alarm Test The sensor alarm test checks a sensor s ability to signal an alarm state This test requires that you use a field provided SD MAG test magnet A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern This test places the duct detector into the alarm state Unless part of the test disconnect all auxiliary equipment from the controller before performing the test If the duct detector is connected to a fire alarm system notify the authorities before performing the test proper Sensor Alarm Test Procedure 1 Hold the test magnet where indicated on the side of the sensor housing for seven seconds 2 Verify that the sensor s Alarm LED turns on 3 Reset the sensor by holding the test magnet against the sensor housing for two seconds 4 Verify that the sensor s Alarm LED turns off Controller Alarm Test The controller alarm test checks the controller s ability to initiate and indicate an alarm state 18 A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern This test places the duct detector into the alarm state Disconnect all auxiliary equipment from the controller before performing the test If the duct detector 1s connected to a fire alarm system no
124. ctory set and field adjustable For specific operating instructions refer to the literature provided with user interface software Perform System Check Out 1 Check correctness and tightness of all power and communication connections 2 At the unit check fan and system controls for proper operation 3 At the unit check electrical system and connections of any optional electric reheat coil 4 Check to be sure the area around the unit is clear of construction dirt and debris 5 Check that final filters are installed in the unit Dust and debris can adversely affect system operation 6 Verify that the PremierLink controls are properly con nected to the CCN bus Initial Operation and Test Perform the following procedure 1 Apply 24 vac power to the control 2 Connect the service tool to the phone jack service port of the controller 3 Using the Service Tool upload the controller from address 0 31 at 9600 baud rate The address may be set at this time Make sure that Service Tool is con nected to only one unit when changing the address Memory Reset DIP switch 4 causes an E squared memory reset to factory defaults after the switch has been moved from position 0 to position 1 and the power has been restored To enable the feature again the switch must be put back to the 0 position and power must be restored this prevents subsequent resets to factory defaults if the switch is left at position 1 To cause a
125. ctric heat Heating may also be energized when an IAQ sensor installed and has overridden the minimum economizer damper position If the OAT lt 55 F and an IAQ sensor is installed and the IAQ minimum position gt minimum damper position causing the SAT to decrease below the SPT 10 F then the heat stages will be cycled to temper the SAT to maintain a temperature between the SPT and the SPT 10 F Auxiliary Relay configured for Exhaust Fan If the Auxiliary Relay is configured for exhaust fan AUXOUT 1 in the CONFIG configuration table and Continuous Power Exhaust MODPE is enable in the SERVICE configuration table then the output HS3 will be energized whenever the G input is on If the MODPE is disabled then output will be energized based on the Power Exhaust Setpoint PES in the SETPOINT table Indoor Air Quality If the optional indoor air quality IAQD sensor is installed the PremierLink controller will maintain indoor air quality within the space at the user configured differential setpoint IAOD in the CONFIG configuration table The setpoint is the difference between the IAQI and an optional outdoor air quality sensor OAQ If the OAQ is not present then a fixed value of 400 ppm is used The actual space IAQ setpoint IAQS is calculated as follows IAQS IAQD OAQ OAQ 400 ppm if not present As air quality within the space changes the minimum position of the economizer damper will be changed also th
126. cuiting Copyright 2008 Carrier Corp 7310 W Morris St Indianapolis IN 46231 Printed in U S A Edition Date 08 08 Catalog No 48TC 28M Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces 48TC 18M 106 UNIT START UP CHECKLIST I PRELIMINARY INFORMATION MODEL NO SERIAL NO DATE TECHNICIAN BUILDING LOCATION II PRE START UP insert check mark in box as each item is completed VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS VERIFY THAT FLUE HOOD IS INSTALLED CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK TO ENSURE NO WIRES ARE TOUCHING REFRIGERANT TUBING OR SHARP EDGES CHECK GAS PIPING FOR LEAKS CHECK THAT RETURN AIR FILTER IS CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND VERIFY SETSCREW IS TIGHT VERIFY PULLEY ALIGNMENT AND BELT TENSION ARE CORRECT III START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 L2 L3 L3 L1 COMPRESSOR AMPS L1 L2 L2 INDOOR FAN AMPS L1 L2 L2 TEMPERATURES OUTDOOR AIR TEMPERATURE DB WB RETURN AIR TEMPERATURE DB WB COOLING SUPPLY AIR DB WB GAS HEAT SUPPLY AIR DB PRESSURES GAS INLET PRESSURE IN WG GAS MANIFOLD PRESSURE IN WG LOW FIRE IN WG HI FIRE REFRIGERA
127. d in the main control box Occupancy Control The factory default configuration for the EconoMi er IV control is occupied mode Occupied status is provided by the black jumper from terminal TR to terminal N When unoccupied mode is desired install a field supplied timeclock function in place of the jumper between TR and N When the timeclock contacts are closed the EconoMi er IV control will be in occupied mode When the timeclock contacts are open removing the 24 v signal from terminal N the EconoMi er IV will be in unoccupied mode Demand Control Ventilation DCV When using the EconoMi er IV for demand controlled ventilation there are some equipment selection criteria which should be considered When selecting the heat capacity and cool capacity of the equipment the maximum ventilation rate must be evaluated for design conditions The maximum damper position must be calculated to provide the desired fresh air Typically the maximum ventilation rate will be about 5 to 10 more than the typical cfm required per person using normal outside air design criteria A proportional anticipatory strategy should be taken with the following conditions a zone with a large area varied occupancy and equipment that cannot exceed the required ventilation rate at design conditions Exceeding the required ventilation rate means the equipment can condition air at a maximum ventilation rate that is greater than the required ventilation rate f
128. ded coil will drive the fibers and dirt into the coil This will make cleaning efforts more difficult Surface loaded fibers must be completely removed prior to using low velocity clean water rinse Periodic Clean Water Rinse A periodic clean water rinse is very beneficial for coils that are applied in coastal or industrial environments However it is very important that the water rinse is made with a very low velocity water stream to avoid damaging the fin edges Monthly cleaning as described below is recommended Routine Cleaning of Coil Surfaces Periodic cleaning with Totaline environmentally sound coil cleaner is essential to extend the life of coils This cleaner is available from Carrier Replacement Components Division as part number P902 0301 for a one gallon container and part number P902 0305 for a 5 gallon container It is recommended that all coils including standard aluminum pre coated copper copper or E coated coils be cleaned with the Totaline environmentally sound coil cleaner as described below Coil cleaning should be part of the unit s regularly scheduled maintenance procedures to ensure long life of the coil Failure to clean the coils may result in reduced durability in the environment Avoid use of coil brighteners acid cleaning prior to painting high pressure washers poor quality water for cleaning Totaline environmentally sound coil cleaner is nonflammable hypo allergenic non bacterial and
129. dels except Low NOx are equipped with 2 stage gas valves Single phase models and all Low NOx models are equipped with single stage gas valves See Fig 37 for locations of adjustment screws and features on the gas valves To adjust gas valve pressure settings IMPORTANT Leak check all gas connections including the main service connection gas valve gas spuds and manifold pipe plug All leaks must be repaired before firing unit Check Unit Operation and Make Necessary Adjust ments NOTE Gas supply pressure at gas valve inlet must be within specified ranges for fuel type and unit size See Table 4 and Table 5 25 48TC Remove manifold pressure tap plug from manifold and connect pressure gauge or manometer See Fig 33 Turn on electrical supply Turn on unit main gas valve Set room thermostat to call for heat If unit has two stage gas valve verify high stage heat operation be fore attempting to adjust manifold pressure When main burners ignite check all fittings mani fold and orifices for leaks Adjust high stage pressure to specified setting by turning the plastic adjustment screw clockwise to in crease pressure counter clockwise to decrease pres sure For Two Stage Gas Valves set room thermostat to call for low stage heat Adjust low stage pressure to specified setting Replace regulator cover screw s when finished With burner access panel removed observe unit heat
130. display table the fan will be shutdown immediately regardless of the occupancy state or demand The PremierLink controller has an optional Supply Fan Status input to provide proof of airflow If this is enabled the point will look for a contact closure whenever the Supply Fan Relay is on If the input is not enabled then it will always be the same state as the Supply Fan Relay The cooling economizer and heating routines will use this input point for fan status Cooling The compressors are controlled by the Cooling Control Loop that is used to calculate the desired SAT needed to satisfy the space It will compare the SPT to the Occupied Cool Setpoint OCSP the T56 slider offset STO when occupied and the Unoccupied Cool Setpoint UCSP Unoccupied Cooling Deadband if unoccupied to calculate a Cooling Submaster Reference CCSR that is then used by the staging algorithm Cooling submaster loop to calculate the required number of cooling stages The economizer if available will be used as the first stage of cooling in addition to the compressors This loop runs every minute The following conditions must be met in order for this algorithm to run indoor fan has been ON for at least 30 seconds heat mode is not active and the time guard between modes equals zero mode is occupied or the Temperature Compensated Start or Cool mode is active e SPT reading is available and gt OCSP STO e If mode is unoccupied and the SP
131. door Air Enthalpy Control PNO HH57AC077 The enthalpy control HH57ACO77 is available as a field installed accessory to be used with the EconoMi er2 damper system The outdoor air enthalpy sensor is part of the enthalpy control The separate field installed accessory return air enthalpy sensor HH57ACO078 is required for differential enthalpy control See below Locate the enthalpy control in the economizer hood Locate two GRA leads in the factory harness and connect these leads to enthalpy control sensors 2 and 3 See Fig 48 Connect the enthalpy control power input terminals to economizer actuator power leads RED connect to TR and BLK connect to TR1 The outdoor enthalpy changeover setpoint is set at the enthalpy controller The enthalpy control receives the outdoor air enthalpy from the outdoor air enthalpy sensor and provides a dry contact switch input to the RTU MP controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position Differential Enthalpy Control Differential enthalpy control is provided by sensing and comparing the outside air and return air enthalpy conditions Install the outdoor air enthalpy control as described above Add and install a return air enthalpy sensor Return Air Enthalpy Sensor Mount the return air enthalpy sensor HH57ACO78 in the return air duct The 46 return air sensor i
132. e ECONSR based on OAT and enthalpy conditions and cooling requirements The ECONSR value is then passed to the Economizer Submaster Loop which will modulate dampers to maintain SAT at ECONSR level The following conditions are required to determine if economizer cooling is possible ndoor fan has been on for at least 30 seconds Enthalpy is low SAT reading is available OAT reading is available SPT reading is available e OAT lt SPT e OAT lt OATMAX OATMAX default is 75 F Economizer position is NOT forced If any of the above conditions are not met the ECONSR will be set to its MAX limit of 120 F and the damper will go to its configured minimum position The minimum damper position can be overridden by the IAQ routine described later in this section The calculation for ECONSR is as follows ECONSR PID function on setpoint SPT where setpoint OCSP STO OHSP STO 2 when NTLO Unoccupied Free Cool OAT Lockout OAT 68 F setpoint OCSP STO 1 when OAT lt NTLO setpoint OHSP STO 1 when OAT 68 F The actual damper position ECONPOS is the result of the following calculation Values represented in the right side of the equation can be found in the SERVICE configuration table descriptions in this manual Note that that the OAT is taken into consideration to avoid large changes in damper position when the OAT is cold ECONPOS SubGain x ECONSR SAT CTRVAL where SubGain
133. e Menu selection Enter the User password and change the Occupancy Source to Local Schedule Scroll down and over to the Daily menu and press enter Choose one of the four Daily schedules by pressing the Next softkey and change the Use point from NO to YES by selecting the point and pressing the INCR or DECR softkey Press the OK softkey and scroll to the start and stop times Edit these times following the same steps as the Use point Finally scroll down to the Days section and highlight the days required for the Daily schedule by INCR or DECR softkeys and press OK softkey The Holiday schedule is created to override the Daily schedule and identify a specific day and month of the year to start and stop the unit and change control to the unoccupied heating and cooling setpoints Follow the same steps to turn on one of the twelve Holiday schedules and start and stop times Next select one out of the twelve months and one out of the thirty one days of that month The RTU MP will now ignore the Daily schedule for the specific day and time you selected and follow the Holiday Schedule for this period The Override schedules primary purpose is to provide a temporary change in the occupied heating and cooling setpoints and force the unit to control to the unoccupied heating and cooling setpoints This would occur on a set day in a particular month and last during the start and stop time configured The Override schedule is enabled by following the
134. e controller as shown in Fig 24 and configured to operate the controller s supervision relay For more information see Changing sensor dirty test operation Smoke Detector Controller TB3 On B Auxiliary OH D equipment 3 9 S ik SD TRK4 upervision relay contacts 3 Tai Z rouble A e A NE 1Vde A Power Z 1 9 2 Wire must be Alam Z7 added by installer 5 O ai e Reset Test o G EA NEVE H l 18 Vde L Aa c C08247 Fig 24 Remote Test Reset Station Connections A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern If the test reset station s key switch is left in the RESET TEST position for longer than seven seconds the detector will automatically go into the alarm state and activate all automatic alarm responses A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern Holding the test magnet to the target area for longer than seven seconds will put the detector into the alarm state and activate all automatic alarm responses Dirty Sensor Test Using an SD TRK4 1 Turn the key switch to the RESET TEST position for two seconds 2 Verify that the test reset station s Trouble LED flashes Detector Cleaning Cleaning the Smoke Detector Clean the duct smoke
135. e the heat stages to maintain the SAT between the SPT and the SPT 10 F CCN SENSOR MODE When the PremierLink controller is configured for CCN control it will control the compressor economizer and heating outputs based its own space temperature input and setpoints or those received from Linkage An optional CO2 IAQ sensor mounted in the space or received through communications can also influence the economizer and heating outputs The PremierLink controller does not have a hardware clock so it must have another device on the CCN communication bus broadcasting time The controller will maintain its own time once it has received time as long as it has power and will send a request for time once a minute until it receives time when it has lost power and power is restored The controller will control to unoccupied setpoints until it has received a valid time The controller must have valid time in order to perform any broadcast function follow an occupancy schedule perform IAQ pre occupancy purge and many other functions as well The following sections describe the operation for the functions of the PremierLink controller Indoor Fan The indoor fan will be turned on whenever any one of the following conditions are met If the PremierLink controller is in the occupied mode and ASHRAE 90 1 Supply Fan is configured for Yes in the CONFIG table This will be determined by its own internal occupancy schedule if it is programmed to follo
136. ed The status of Alarms except Fire and Safety chain is ignored but all alerts and alarms are still broadcasted on the network Field Service Test can be turned ON OFF at the unit display or from the network Once turned ON other entries may be made with the display or through the network To turn Field Service Test on change the value of Test Mode to ON to turn Field Service Test off change the value of Test Mode to OFF NOTE Service Test mode is password protected when accessing from the display Depending on the unit model factory installed options and field installed accessories some of the Field Service Test functions may not apply The independent outputs IndpOutputs submenu is used to change output status for the supply fan economizer and Power Exhaust These independent outputs can operate simultaneously with other Field Service Test modes All outputs return to normal operation when Field Service Test is turned off The Cooling submenu is used to change output status for the individual compressors and the dehumidification relay Compressor starts are not staggered The fans and heating service test outputs are reset to OFF for the cooling service test Indoor fans and outdoor fans are controlled 68 normally to maintain proper unit operation All normal cooling alarms and alerts are functional NOTE Circuit A is always operated with Circuit B due to outdoor fan control on Circuit A Always test Circuit A fi
137. ed mode When installing this accessory the unit must be configured for remote occupancy by setting MENU Config Inputs input 3 5 8 or 9 to Remote Occupancy and normally open N O or normally closed N C Also set MENU Schedules occupancy source to DI on off Input 8 or 9 is recommended for easy of installation Refer to Fig 59 and Table 21 for wire terminations at J5 Power Exhaust output Connect the accessory Power Exhaust contactor coil s per Fig 66 Power Exhaust LCTB THERMOSTAT C08464 Fig 66 RTU MP Power Exhaust Connections Space Relative Humidity Sensor The RH sensor is not used with 48TC models at this time Communication Wiring Protocols General Protocols are the communication languages spoken by contro devices The main purpose of a protocol is to communicate information in the most efficient method possible Different protocols exist to provide different kinds of information for different applications In the BAS application many different protocols are used depending on manufacturer Protocols do not change the function of a controller just make the front end user different The RTU MP can be set to communicate on four different protocols BACnet Modbus N2 and LonWorks Switch 3 SW3 on the board is used to set protocol and baud rate Switches 1 and 2 SW1 and SW2 are used to set the board s network address See Fig 67 for the switch setting per protocol The 3rd part
138. eel medium heat T Stainless steel high heat Intake Exhaust Options A None Refrig System Options B Temp econo w baro relief A Standard refrigeration system F Enthalpy econo w baro relief Base Unit Controls Cooling Tons 0 Electromechanical 04 3 Ton 08 7 5 Ton 1 PremierLink DDC controller 05 4 Ton 09 8 5 Ton 2 RTU MP multi protocol controller 06 5 Ton 12 10 Ton 07 6 Ton Design Rev Factory assigned Sensor Options A None Voltage B RA smoke detector 1 575 3 60 C SA smoke detector 3 208 230 1 60 D RA 8 SA smoke detector 5 208 230 3 60 E CO sensor 6 460 3 60 F RA smoke detector amp CO G SA smoke detector amp CO Coil Options Outdoor Coil Indoor Coil H RA amp SA smoke detector amp CO A Al Cu Al Cu B Precoat Al Cu Al Cu C E coat Al Cu Al Cu Indoor Fan Options D E coat Al Cu E coat Al Cu 1 Standard static option E Cu Cu Al Cu 2 Medium static option F Cu Cu Cu Cu 3 High static option M Al Cu Al Cu Louvered Hail Guards N Precoat Al Cu Al Cu Louvered Hail Guards P E coat Al Cu Al Cu Louvered Hail Guards Q E coat Al Cu E coat Al Cu Louvered Hail Guards R Cu Cu Al Cu Louvered Hail Guards S Cu Cu Cu Cu Louvered Hail Guards 1 Future availability Serial Number Format POSITION NUMBER 1 2 4 5 6 8 9 10 TYPICAL 1 2 8 G 1 3 4 6 POSITION DESIGNATES 1 2 Week of manufacture fiscal calendar 3 4
139. elative humidity is greater then the Occupied High Humidity setpoint then the H3 EX RV output point will be energized When in the unoccupied mode and indoor relative humidity is greater then the Unoccupied High Humidity setpoint then the H3 EX RV output point and supply fan output will be energized There is a fixed 5 hysteresis that the indoor relative humidity must drop below the active setpoint to end the dehumidification mode and deenergize the H3 EX RV output If the PremierLink controller is in the unoccupied mode then the fan relay will deenergize if there is no other mode requiring to the fan to be on This function will not energize mechanical cooling as a result of the indoor relative humidity exceeding either setpoint A high humidity alarm will be generated if the indoor relative humidity exceeds the high humidity setpoint by the amount configured in the Control Humidity Hysteresis in the ALARMS table for 20 minutes The alarm will return to normal when the indoor relative humidity drops 3 below the active humidity setpoint Economizer The economizer dampers are used to provide free cooling and indoor air quality if optional CO2 sensor is installed and when the outside conditions are suitable Temperature control is accomplished by controlling the SAT to a certain level determined by the Economizer PID Loop by calculating a submaster reference ECONSR value This algorithm will calculate the submaster reference temperatur
140. elet mounting ring See Table 15 for temperature resistance characteristic EconoMi er 2 The RTU MP control is used with EconoMi er2 option or accessory for outdoor air management The damper position is controlled directly by the RTU MP control EconoMi er 2 has no internal logic device Outdoor air management functions can be enhanced with field installation of these accessory control devices Enthalpy control outdoor air or differential sensors Space CO sensor Outdoor air CO sensor Field Connections Field connections for accessory sensors and input devices are made the RTU MP at plugs J1 J2 J4 J5 J11 and J20 All field control wiring that 45 48TC connects to the RTU MP must be routed through the raceway built into the corner post as shown in Fig 34 The raceway provides the UL required clearance between high and low voltage wiring Pass the control wires through the hole provided in the corner post then feed the wires thorough the raceway to the RTU MP Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board Space Temperature SPT Sensors A field supplied Carrier space temperature sensor is required with the RTU MP to monitor space temperature There are 3 sensors available for this application e 33ZCTSSSPT space temperature sensor with override button e 33ZCT56SPT space temperature sensor with override button and setpoint adjustment e 33ZC
141. er The controller can be connected to one or two compatible duct smoke sensors The clear plastic cover is secured to the housing with a single captive screw for easy access to the wiring terminals The controller has three LEDs for Power Trouble and Alarm and a manual test reset button on the cover face 15 48TC Duct smoke sensor controller Conduit nuts Pan supplied by installer SON EA DM Conduit support plate 1 d Ore AE NL N ASR exce j mel Iberi 7 N i AN a e Cover gasket LS NON ordering option a 2 e o Fastener 2X Controller housing _ and electronics a g Conduit couplings supplied by installer 2 Va Controller cover Trouble Power Test reset switch C08208 Fig 16 Controller Assembly Sensor The sensor see Fig 17 includes a plastic housing a printed circuit board a clear plastic cover a sampling tube inlet and an exhaust tube The sampling tube when used and exhaust tube are attached during installation The sampling tube varies in length depending on the size of the rooftop unit The clear plastic cover permits visual inspections without having to disassemble the sensor The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing electronics Each sensor includes a harness with an RJ45 terminal for connecting to the controller Each sensor has four
142. es 6 Press Enter to lock in the selection then press Mode to continue to the next variable Dehumidification of Fresh Air with DCV Demand Controlled Ventilation Control If normal rooftop heating and cooling operation is not adequate for the outdoor humidity level an energy recovery unit and or a dehumidification option should be considered EconoMi er IV Preparation This procedure is used to prepare the EconoMi er IV for troubleshooting No troubleshooting or testing is done by performing the following procedure NOTE This procedure requires a 9 v battery 1 2 kilo ohm resistor and a 5 6 kilo ohm resistor which are not supplied with the EconoMi er IV IMPORTANT Be sure to record the positions of all potentiometers before starting troubleshooting 1 Disconnect power at TR and TRI All LEDs should be off Exhaust fan contacts should be open 2 Disconnect device at P and P1 LA Jumper P to P1 4 Disconnect wires at T and T1 Place 5 6 kilo ohm resistor across T and T1 5 Jumper TR to 1 6 Jumper TR to N 7 If connected remove sensor from terminals SO and Connect 1 2 kilo ohm 4074EJM checkout resistor across terminals SO and 8 Put 620 ohm resistor across terminals SR and 9 Set minimum position DCV setpoint and exhaust po tentiometers fully CCW counterclockwise 10 Set DCV maximum position potentiometer fully CW clockwise 11 Set enthalpy potentiometer to D 12 Apply power 2
143. esent then a fixed value of 400 ppm is used The actual space IAQ setpoint IAQS is calculated as follows IAQS IAOD OAQ OAQ 400 ppm if not present As air quality within the space changes the minimum position of the economizer damper will be changed also thus allowing more or less outdoor air into the space depending on the relationship of the IAQI to the LAOS The IAQ algorithm runs every 30 seconds and calculates IAQ minimum position value using a PID loop on the IAQI deviation from the IAOS The IAQ minimum position is then compared against the user configured minimum position MDP and the greatest value becomes the final minimum damper position IQMP If the calculated IAQ minimum position is greater than the IAQ maximum damper position IAQMAXP decision in the SERVICE configuration table then it will be clamped to IAOMAXP value If IAQ is configured for low priority the positioning of the economizer damper can be overridden by comfort requirements If the SPT OCSP 2 5 or the SPT OHSP 2 5 then IAQ minimum position becomes 0 and the IOMP MDP The IAQ mode will resume when the SPT OCSP 1 0 and SPT OHSP 1 0 If IAQ is configured for high priority and the OAT lt 55 F and the SAT lt SPT 10 F the algorithm will enable the heat stages to maintain the SAT between the SPT and the SPT 10 F IAQ Pre Occupancy Purge This function is designed to purge the space of airborne contaminants that may
144. eter Defaults Settings NOTES m 3a Power Exhaust Middle 1 620 ohm 1 watt 596 resistor should be removed only when using differential PAS ES NEQUAM Ventilation Minimum Pos Fully Closed enthalpy or dry bulb y 9 A A DCV Max Middle ield i i LA Low Ambient Lockout Device l 2 If a separate field supplied 24 v transformer is used for the IAQ sensor power OAT Outdoor Air Temperature DCV Set Middle supply it cannot have the secondary of the transformer grounded POT Potentiometer Enthalpy C Setting 3 For field installed remote minimum position POT remove black wire jumper RAT Return Air Temperature between P and P1 and set control minimum position POT to the minimum position C06028 Fig 72 EconoMi er IV Wiring BLACK 4 TRANSFORMER GROUND 3 5 hd BLUE 2 500 OHM E RESISTOR 8 U VIOLET O 6 NOTE 1 03 PINK 7 RUN OAT SENSOR RED 24 VAC NOTE 3 1 Be 10 50HJ540573 o z ACTUATOR lt ASSEMBLY e 3 11 LI 9 4 20 mA DIRECT DRIVE 4 20mA SIGNAL WHITE 45 TO J9 ON ACTUATOR PremierLink BOARD ECONOMI ER2 PLUG NOTES 1 Switch on actuator must be in run position for economizer to operate 2 PremierLink control requires that the standard 50HJ540569 outside air sensor be replaced by either the CROASENRO01A00 dry bulb sen sor or HH57A077 enthalpy sensor 3 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500 ohm resistor C08310 Fig 73 EconoMi er2 with 4 to 20 mA Control Wiring
145. f present so it senses the concentration of CO2 leaving the space The sensor should be mounted in a location to avoid direct breath contact Do not mount the IAQ sensor in drafty areas such as near supply ducts open windows fans or over heat sources Allow at least 3 ft 0 9 m between the sensor and any corner Avoid mounting the sensor where it is influenced by the supply air the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream Wiring the Indoor Air Quality Sensor For each sensor use two 2 conductor 18 AWG American Wire Gage twisted pair cables unshielded to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the sensor See Fig 50 Connect the 4 20 mA terminal to terminal TB1 9 and connect the SIG COM terminal to terminal TB1 7 See Fig 51 IAQ Sensor TB1 PL CO E 8 455 3 TB1 JS LQ e 24 VAC C08274 Fig 51 Indoor CO Sensor 33ZCSENCO2 Connections Refer to Form 33CS 58SI PremierLink Installation Start up and Configuration Instructions for detailed configuration information Outdoor Air Quality Sensor PNO 33ZCSENCO2 plus weatherproof enclosure The outdo
146. fers to the timer set for the Supply Fan Runtime Alarm After the number of runtime hours set on this point is exceeded the corresponding alarm will be generated and must be manually cleared on the alarm reset screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 0 hr NOTE Setting this configuration timer to 0 disables the alarm Compressor1 Service Hours This refers to the timer set for the Compressor 1 Runtime Alarm After the number of runtime hours set on this point is exceeded the corresponding alarm will be generated and must be manually cleared on the alarm reset screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 0 hr NOTE Setting this configuration timer to 0 disables the alarm Compressor2 Service Hours This refers to the timer set for the Compressor 2 Runtime Alarm After the number of hours set on this point is exceeded the corresponding alarm will be generated and must be manually cleared on the alarm rest screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 0 hr NOTE Setting this configuration timer to 0 disables the alarm Cooling Number of Compressor Stages This refers to the number of mechanica
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148. han one analog input inputs 1 amp 2 is configured for the same sensor When this happens the two inputs will be disabled as inputs This alarm will automatically be cleared when configuration is corrected An example of this would be Input 1 IAQ Sensor input 2 IAQ Sensor the alarm would be active unit would run but the IAQ Sensor inputs 1 amp 2 will be interpreted as No Function Third Party Networking Third party communication and networking troubleshooting should be done by or with assistance from the front end 3rd party technician A Module Status Report Modstat can be run from the BACview see Table 24 to perform This lists information about the board status and networking state For basic troubleshooting see Table 25 Refer to the RTU MP 3rd Party Integration Guide for additional information BACnet MS TP 1 Verify that the BAS and controller are both set to speak the BACnet MS TP protocol The protocol of the controller is set via SW3 switches 3 4 5 and 6 The protocol can also be verified by getting a Modstat of the controller through the BACview Hit the FN key and the key at the same time to pull up a Modstat Scroll to the bottom of the page and there is a section entitled Network Communications The active protocol and baud rate will be shown in this section 2 Verify that the BAS and controller are set for the same baud rate The baud rate of the controller is set via SW3 switches
149. he Evaporator Coil 1 Turn unit power off Install lockout tag Remove evaporator coil access panel 2 If economizer or two position damper is installed re move economizer by disconnecting Molex plug and removing mounting screws 3 Slide filters out of unit 4 Clean coil using a commercial coil cleaner or dish washer detergent in a pressurized spray canister Wash both sides of coil and flush with clean water For best results back flush toward return air section to re move foreign material Flush condensate pan after completion 5 Reinstall economizer and filters 6 Reconnect wiring 7 Replace access panels Evaporator Coil Metering Devices The metering devices are multiple fixed bore devices Acutrol swedged into the horizontal outlet tubes from the liquid header located at the entrance to each evaporator coil circuit path These are non adjustable Service requires replacing the entire liquid header assembly To check for possible blockage of one or more of these metering devices disconnect the supply fan contactor IFC coil then start the compressor and observe the frosting pattern on the face of the evaporator coil A frost pattern should develop uniformly across the face of the coil starting at each horizontal header tube Failure to develop frost at an outlet tube can indicate a plugged or a missing orifice Refrigerant System Pressure Access Ports There are two access ports in the system on the suct
150. he actuator should remain in position Turn the DCV setpoint potentiometer CW until the DCV LED turns off The DCV LED should turn off when the potentiometer is approximately 9 v The ac tuator should drive fully closed Turn the DCV and Exhaust potentiometers CCW until the Exhaust LED turns on The exhaust contacts will close 30 to 120 seconds after the Exhaust LED turns on Return EconoMi er IV settings and wiring to normal after completing troubleshooting DCV Minimum and Maximum Position To check the DCV minimum and maximum position 1 Make sure EconoMi er IV preparation procedure has been performed 2 Connect a 9 v battery to AQ positive node and AO 3 negative node The DCV LED should turn on The actuator should drive to between 90 and 9546 open Turn the DCV Maximum Position potentiometer to midpoint The actuator should drive to between 20 and 8046 open 4 Turn the DCV Maximum Position potentiometer to fully CCW The actuator should drive fully closed Turn the Minimum Position potentiometer to mid point The actuator should drive to between 20 and 80 open Turn the Minimum Position Potentiometer fully CW The actuator should drive fully open Remove the jumper from TR and N The actuator should drive fully closed Return EconoMi er IV settings and wiring to normal after completing troubleshooting Supply Air Sensor Input To check supply air sensor input
151. id not trip check input configurations Space Temp Sensor Failure This alarm occurs if the space sensor wired to the RTU MP is disconnected or shorted for more then 10 seconds When this occurs the Unit Status will be Shutdown and the System Mode will be Run Sensor sensor connections wiring board connection and configurations should be checked for faults or errors Alarm will reset automatically when cause is fixed SAT Sensor Alarm This alarm occurs immediately when the supply air temperature sensor wired to the RTU MP is disconnected or shorted When this occurs the Unit Status will be Shutdown and the System Mode will be Run Sensor sensor connections wiring board connection and configurations should be checked for faults or errors Alarm will reset automatically when cause is fixed Switch Configuration Alarm This occurs if more than one binary input inputs 3 5 8 and 9 is configured for the same function When this happens the two inputs or more configured wrong will be disabled as an inputs This alarm will automatically be cleared when configuration is corrected An example of this would be Input 3 Compressor Safety input 5 Fan Status input 8 Fan Status and input 9 Humidistat the alarm would be active unit would run compressor safety and humidistat would function normally and Fan Status inputs 5 amp 8 will be interpreted as No Function Misconfigured Analog Input This occurs if more t
152. igh Static 2120 2 1 80 2 0 48TC 05 4 TONS VOLTAGE COMP ea OFM ea IFM V Ph Hz RANGE Max Max MIN MAX RLA LRA WATTS FLA TYPE WATTS AMP Draw EFF at Full Load FLA Std Static 1000 5 1 7096 4 9 208 1 60 187 253 21 8 117 325 1 5 Med Static 1850 74 78 70 Std Static 1000 5 1 7096 4 9 230 1 60 187 253 21 8 117 325 1 5 Med Static 1850 74 78 70 Std Static 1000 5 1 7096 4 9 208 3 60 187 253 13 7 83 325 1 5 Med Static 1000 5 1 7096 4 9 High Static 2120 5 5 8096 5 2 Std Static 1000 5 1 7096 4 9 230 3 60 187 253 13 7 83 325 1 5 Med Static 1000 5 1 7096 4 9 High Static 2120 5 5 8096 5 2 Std Static 1000 22 7096 2 1 460 3 60 414 506 6 2 41 325 0 8 Med Static 2120 2 7 8096 2 6 High Static 2120 2 7 8096 2 6 Std Static 1000 2 0 7196 1 9 575 3 60 518 633 4 8 37 325 0 6 Med Static 2120 2 1 80 2 0 High Static 2120 2 1 80 2 0 99 48TC APPENDIX IV ELECTRICAL DATA cont 48TC 06 5 TONS VOLTAGE COMP ea OFM ea IFM V Ph Hz RANGE Max Max MIN MAX RLA LRA WATTS FLA TYPE WATTS AMP Draw EFF at Full Load FLA Std Static 1000 5 1 7096 4 9 208 1 60 187 253 262 134 325 1 5 Med Static 1850 74 7896 70 Std Static 1000 5 1 7096 4 9 230 1 60 187 253 262 134 325 1 5 Med Static 1850 74 7896 70 Std Static 1000 5 1 7096 4 9 208 3 60 187 253 15 6 110 325 1 5 Med Static 2120 5 5 8096 5 2 High Static 2615 7 9
153. igh Static 4559 15 8 8196 15 0 Std Static 2120 2 7 8096 2 6 460 3 60 414 506 16 7 114 325 0 8 Med Static 3775 4 6 8196 4 4 High Static 4559 7 8 8196 7 4 Std Static 1390 2 1 8096 2 0 575 3 60 518 633 122 80 325 0 6 Med Static 3775 2 9 8196 2 8 High Static 1870 5 9 8196 5 6 101 48TC APPENDIX IV ELECTRICAL DATA cont MCA MOCP DETERMINATION NO C O OR UNPWRD C O COMBUSTION POWER NO C O or UNPWRD C O Iz NOM IFM NO PE w PE pwrd fr unit V Ph Hz type FAN SE See ST DISC SIZE DISC SIZE MCA MOCP EA LRA MCA MOCP e IRA STD 27 2 40 0 26 95 29 1 45 0 29 97 208 230 1 60 MED 0 48 18 27 2 40 0 26 95 29 1 45 0 29 97 STD 19 4 25 0 19 89 21 3 30 0 22 91 208 230 3 60 MED 0 48 1 9 19 4 25 0 19 89 21 3 30 0 22 EN HIGH 19 7 30 0 20 107 21 6 30 0 22 109 O STD 10 2 15 0 10 46 11 2 15 0 11 47 2 460 3 60 MED 0 25 1 0 10 2 15 0 10 46 11 2 15 0 11 47 HIGH 10 7 15 0 11 55 11 7 15 0 12 56 STD 7 3 15 0 7 44 9 2 15 0 9 46 575 3 60 MED 0 24 1 9 73 15 0 7 44 9 2 15 0 9 46 HIGH 74 15 0 7 50 9 3 15 0 10 52 STD 33 7 50 0 32 133 35 6 50 0 35 135 208 230 1 60 MED 0 48 1 3 33 7 50 0 32 133 35 6 50 0 35 135 STD 23 5 30 0 23 99 25 4 30 0 25 101 208 230 3 60 MED 0 48 1 9 23 5 30 0 23 99 25 4 30 0 25 101 HIGH 23 8 30 0 23 117 25 7 30 0 25 119 O STD 10 7 15 0 10 49 11 7 15 0 12 50 S 46
154. in wg 1 2 1 4 1 6 1 8 2 0 SER RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option Field Supplied Drive 1200 1089 0 84 1153 0 98 1213 1 12 1300 1113 0 92 1177 1400 1 01 1201 1 15 1500 1163 1 10 1600 1189 1 20 1700 1800 1900 2000 NOTE For more information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied motor pulley part number KR11HY161 and belt part number KR30AEO35 48TC 05 1 Phase 4 Ton Vertical Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1200 666 0 26 778 0 37 871 0 47 952 0 57 1025 0 67 1300 701 0 31 810 0 43 901 0 54 981 0 65 1053 0 76 1400 737 0 36 842 0 49 931 0 62 1010 0 74 1081 0 86 1500 773 0 42 963 0 70 1040 0 84 1110 0 96 1600 810 0 49 909 0 65 994 0 79 1070 0 94 1140 1 08 1700 847 0 57 943 0 73 1027 0 89 1101 1 05 1800 885 0 66 978 0 83 1060 1 00 1133 1 16 1900 923 0 75 1014 0 94 1093 1 11 1231 1 46 2000 962 0 85 1049 1 05 1127 1 24 1263 1 61 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 SEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option Field Supplied Drive 1200 1093 0 77 1155 0 87 1213 0 96 1268 1 05 1321 1 14 1300 1119 0 87 1181 1
155. ing device on the suction line and insulate it so that outdoor ambient temperature does not affect the reading Indoor air cfm must be within the normal operating range of the unit To Use Cooling Charging Charts Take the outdoor ambient temperature and read the suction pressure gauge Refer to chart to determine what suction temperature should be If suction temperature is high add refrigerant If suction temperature is low carefully recover some of the charge Recheck the suction pressure as charge is adjusted Part No EC39EZ067 DEPRESSOR PER ARI 720 01 035 FROM FACE OF BODY 7 16 20 UNF RH torqued into the seat Appropriate handling is required to not scratch or dent the surface C08453 Fig 11 CoreMax Access Port Assembly NOMINAL TONS SIZE DESIGNATION REFERENCE EXAMPLE A04 3 A05 4 Model 48TC A04 A06 5 Outdoor Temperature 85 F 29 C id ke Suction Pressure 140 psig 965 kPa A09 SS Suction Temperature should be 60 F 16 C A12 10 COOLING CHARGING CHARTS 3 TON CHARGING CHART R410A REFRIGERANT OUTDOOR TEMP 1241 80 F E 115 46 31112 170 a Ou 1103 160 95 35 S 1034 g 150 85 29 965 B 140 3b Ba 2 896 Z 130 65 18 827 Z 120 55 13 758 S 110 45 7 690 2 100 S 621 90 l 552 80 40 50 60 70 80 90 SUCTION LINE TEMPERATURE
156. ing the proper Modbus func tion codes to access data from our controller Sup ported function codes are shown above 7 Verify proper wiring between the BAS and the con troller 8 Verify that the BAS is reading or writing to the proper Modbus register numbers on the controller Download the latest points list for the controller to verify 9 Verify that the BAS is sending his requests to the proper slave address of our controller NOTE See RTU MP 3rd Party Integration Guide or alternatively Form 48 50H T 1T Appendix for Modbus Protocol Conformance Statement N2 1 Verify that the BAS and controller are both set to speak the N2 protocol The protocol of the controller is set via SW3 switches 3 4 5 and 6 The protocol can also be verified by getting a Modstat of the con troller through the BACview Hit the FN key and the key at the same time to pull up a Modstat Scroll to the bottom of the page and there is a section entitled Network Communications The active pro tocol and baud rate will be shown in this section 2 Verify that the BAS and controller are set for 9600 baud The baud rate of the controller is set via SW3 switches 1 and 2 The baud rate can also be verified via the BACview by obtaining a Modstat see above 3 Verify that the BAS is configured to speak 2 wire EIA 485 to the controller The BAS may have to con figure jumper or DIP switches on their end 4 Verify that the BAS and the cont
157. ink Included PremierLink requires Not Used i GE AE 4 20mA Actuator or equivalent or equivalent NOTES CO Sensors Optional 33ZCSENCO2 Room sensor adjustable Aspirator box is required for duct mounting of the sensor 33ZCASPCO2 Aspirator box used for duct mounted CO room sensor 33ZCT55CO2 Space temperature and COs room sensor with override 33ZCT56CO2 Space temperature and COs room sensor with override and setpoint Table 17 Space Sensor Mode TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL 1 T55 SEN T56 SEN Analog 10k thermistor 2 RMTOCC Discrete 24VAC 3 T55 SEN T56 SEN Analog 10k thermistor 4 CMPSAFE Discrete 24VAC 5 T56 SET Analog 10k thermistor 6 FSD Discrete 24VAC 7 LOOP PWR Analog 24VDC 8 SPS Discrete 24VAC 9 IAQ SEN Analog 4 20mA 10 FILTER Discrete 24VAC 11 IAQ COM OAQ COM RH COM Analog 4 20mA 12 CCN RED Digital 5 DC 13 OAQ SEN RH SEN Analog 4 20mA 14 CCN Gnd WHT Digital 5 DC 15 AUX OUT Power Exhaust Output Discrete 24VAC 16 CCN BLK Digital 5 DC LEGEND T55 Space Temperature Sensor FSD Fire Shutdown T56 Space Temperature Sensor IAQ Indoor Air Quality CO CCN Carrier Comfort Network communication bus OAQ Outdoor Air Quality CO2 CMPSAFE Compressor Safety RH Relative Humidity FILTER Dirty Filter Switch SFS Supply Fan Status 37 48TC
158. ion tube near the compressor and on the discharge tube near the compressor These are brass fittings with black plastic caps The hose connection fittings are standard 1 4 SAE male flare couplings The brass fittings are two piece High Flow valves with a receptacle base brazed to the tubing and an integral spring closed check valve core screwed into the base 48TC See Fig 11 This check valve is permanently assembled into this core body and cannot be serviced separately replace the entire core body if necessary Service tools are available from RCD that allow the replacement of the check valve core without having to recover the entire system refrigerant charge Apply compressor refrigerant oil to the check valve core s bottom o ring Install the fitting body with 96 10 in lbs of torque do not overtighten PURON R 410A REFRIGERANT This unit is designed for use with Puron R 410A refrigerant Do not use any other refrigerant in this system Puron R 410A refrigerant is provided in pink rose colored cylinders These cylinders are available with and without dip tubes cylinders with dip tubes will have a label indicating this feature For a cylinder with a dip tube place the cylinder in the upright position access valve at the top when removing liquid refrigerant for charging For a cylinder without a dip tube invert the cylinder access valve on the bottom when removing liquid refrigerant Because Puron R 41
159. ions can cause harm to the heat exchanger To access burner section slide the sliding burner partition out of the unit system Contact your fuel supplier if this condition is To inspect blower wheel shine a flashlight into draft hood suspected opening If cleaning is required remove motor and wheel Flue Gas Passageways as follows To inspect the flue collector box and upper areas of the 1 Slide burner access panel out heat exchanger 2 Remove the 7 screws that attach induced draft motor housing to vestibule plate See Fig 31 3 The blower wheel can be cleaned at this point If ad ditional cleaning is required continue with Steps 4 1 Remove the combustion blower wheel and motor as sembly according to directions in Combustion Air Blower section See Fig 31 and 5 2 Remove the flue cover to inspect the heat exchanger l Il surf ki re brush 8 4 To remove blower from the motor shaft remove 2 3 Clean all surfaces as required using a wire brush setscrews Combustion Air Blower 5 To remove motor remove the 4 screws that hold the motor to mounting plate Remove the motor cooling fan by removing one setscrew Then remove nuts that hold motor to mounting plate Clean periodically to assure proper airflow and heating efficiency Inspect blower wheel every fall and periodically during heating season For the first heating 6 To reinstall reverse the procedure outlined above Regulator Heater Tube Gasket Seal
160. it power supply Install lockout tag 2 Remove condenser fan assembly grille motor and fan 3 Loosen fan hub setscrews 4 Adjust fan height as shown in Fig 13 5 Tighten setscrews 6 Replace condenser fan assembly Conduit za 0 14 in 0 0 0 03 C08448 Fig 13 Condenser Fan Adjustment Troubleshooting Cooling System Refer to Table 1 for additional troubleshooting topics CONVENIENCE OUTLETS A WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Units with convenience outlet circuits may use multiple disconnects Check convenience outlet for power status before opening unit for service Locate its disconnect switch if appropriate and open it Tag out this switch if necessary Two types of convenience outlets are offered on 48TC models Non powered and unit powered Both types provide a 125 volt GFCI ground fault circuit interrupter duplex receptacle rated at 15 A behind a hinged waterproof access cover located on the end panel of the unit See Fig 14 Pwd CO Transformer Conv Outlet A GFCI ad Pwd CO Fuse EU C08128 Fig 14 Convenience Outlet Location Non powered type This type requires the field installation of a general purpose 125 volt 15 A circuit powered from a source elsewhere in the building O
161. l components Only trained and qualified service personnel should install repair or service air conditioning equipment Untrained personnel can perform the basic maintenance functions of replacing filters Trained service personnel should perform all other operations When working on air conditioning equipment observe precautions in the literature tags and labels attached to the unit and other safety precautions that may apply Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for unbrazing operations Have fire extinguishers available for all brazing operations Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions attached to the unit Consult local building codes and National Electrical Code NEC for special requirements Recognize safety information This is the safety alert symbol A When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies a hazard which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor
162. l cooling stages available on a specific unit Set this point to One Stage if there is one compressor in the specific unit set to Two Stage if there are two compressors in the unit and set to None if economizer cooling ONLY is desired Factory Default 2 One Stage for 1 compressor units Two Stage for 2 compressor units Cooling Econ SAT Low Setpt The supply air temperature must remain above this value to allow cooling with the economizer and or compressors There is 5 F plus and minus deadband to this point If the SAT falls below this value during cooling all compressors will be staged off The economizer will start to ramp down to minimum position when the SAT this configuration 5 F Factory Default 50 F Range 45 75 F Cooling Lockout Temp This defines the minimum outdoor air temperature that cooling mode can be enabled and run If the OAT falls below this threshold during cooling then compressor cooling will not be allowed Factory Default 45 F Range 0 65 F Heating Heating SAT High Setpt The supply air temperature must remain below this value to allow heating There is 5 F plus and minus deadband to this point If the SAT rises above this value during heating the heat stages will begin to decrease until the SAT has dropped below this value Factory Default 120 F Range 95 150 F Heating Lockout Temp This defines the maximum outdoor air temperature that heating mode can be enabled and run
163. lector switch at OFF position Resetting thermostat at a position above room temperature shuts unit off temporarily until space temperature exceeds thermostat setting Main Burners Main burners are factory set and should require no adjustment To check ignition of main burners and heating controls move thermostat setpoint above room temperature and verify that the burners light and evaporator fan is energized Check heating effect then lower the thermostat setting below the room temperature and verify that the burners and evaporator fan turn off Refer to Tables 11 and 12 for the correct orifice to use at high altitudes Heating 1 Purge gas supply line of air by opening union ahead of the gas valve If gas odor is detected tighten union and wait 5 minutes before proceeding 2 Turn on electrical supply and manual gas valve 3 Set system switch selector at HEAT position and fan switch at AUTO or ON position Set heating temper ature lever above room temperature 4 The induced draft motor will start 5 After a call for heating the main burners should light within 5 seconds If the burner does not light then there is a 22 second delay before another 5 second try If the burner still does not light the time delay is repeated If the burner does not light within 15 minutes there is a lockout To reset the control break the 24 v power to W1 6 The evaporator fan motor will turn on 45 seconds after burner ignition
164. led On 48TC units equipped with factory installed Smoke Detector s the smoke detector controller implements the 40 unit shutdown through its NC contact set connected to the unit s LCTB input The FSD function is initiated via the smoke detector s Alarm NO contact set The PremierLink communicates the smoke detector s tripped status to the CCN building control See Fig 23 for unit smoke detector wiring Alarm state is reset when the smoke detector alarm condition is cleared and reset at the smoke detector in the unit Filter Status Switch This function is available only when PremierLink is configured for Space Sensor Mode PremierLink control can monitor return filter status in two ways By monitoring a field supplied installed filter pressure switch or via supply fan runtime hours Using switch input Install the dirty filter pressure switch according to switch manufacturer s instructions to measure pressure drop across the unit s return filters Connect one side of the switch s NO contact set to LCTB s THERMOSTAT R terminal Connect the other side of the NO contact set to TB1 10 Setpoint for Dirty Filter is set at the switch See Fig 54 Filter Switch NO close on rising pressure high drop LCTB Thermostat o O C08216 Fig 54 PremierLink Filter Switch Connection When the filter switch s NO contact set closes as filter pressure drop increases indicating dirt laden filters the input signal to
165. ls between closed and either maximum position DCV or fully open supply air signal EconoMisSer IV MIXED AIR Temperature F 2 10 VDC ACTUATOR 2 84 Volts Fig 74 EconoMi er IV Functional View EconoMiSer IV Standard Sensors C06053 Table 27 provides a summary of EconoMi er IV Troubleshooting instructions are enclosed A functional view of the EconoMi er is shown in Fig 74 Typical settings sensor ranges and jumper positions are also shown An EconoMi er IV simulator program is available from Carrier to help with EconoMi er IV training and troubleshooting Outdoor Air Temperature OAT Sensor The outdoor air temperature sensor HH57ACO74 is a 10 to 20 mA device used to measure the outdoor air temperature The outdoor air temperature is used to determine when the EconoMi er IV can be used for free cooling The sensor is factory installed on the EconoMi er IV in the outdoor airstream See Fig 75 The operating range of temperature measurement is 40 to 100 F 4 to 38 C See Fig 77 27 48TC Supply Air Temperature SAT Sensor The supply air temperature sensor is a 3 K thermistor located at the inlet of the indoor fan See Fig 75 This sensor is factory installed The operating range of temperature measurement is 0 to 158 F 18 to 70 C See Table 15 for sensor temperature resistance values SUPPLY AIR TEMPERATURE SENSOR MOUNTING LOCATION SUPPLY AIR TEMPERATUR
166. mend using field supplied fan pulley part number KR11AG006 and belt part number KR30AE039 2 Recommend using field supplied motor pulley part number KR11HY161 and belt part number KR30AE035 48TC 04 1 Phase 3 Ton Vertical Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 CEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 900 567 0 15 688 0 22 786 0 30 871 0 37 947 0 44 975 591 0 17 710 0 26 807 0 34 891 0 42 966 0 49 1050 615 0 20 732 0 29 828 0 38 911 0 47 985 0 55 1125 641 0 23 755 0 33 849 0 42 931 0 52 1005 0 61 1200 666 0 26 778 0 37 871 0 47 952 0 57 1025 0 67 1275 693 0 29 802 0 41 893 0 53 974 0 63 1046 0 74 1350 719 0 33 826 0 46 916 0 58 995 0 70 1067 0 81 1425 746 0 38 850 0 51 939 0 64 1017 0 76 1088 0 89 1500 773 0 42 0 57 963 0 70 1040 0 84 1110 0 96 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 SEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option Field Supplied Drive 900 1016 0 51 1080 0 57 1139 0 64 1195 0 71 1249 0 77 975 1034 0 57 1098 0 64 1157 0 72 1213 0 79 1266 0 86 1050 1053 0 63 1116 0 71 1176 0 79 1231 0 87 1284 0 95 1125 1073 0 70 1135 0 79 1194 0 87 1250 0 96 1302 1 04 1200 1093 0 77 1155 0 87 1213 0 96 1268 1 05 1321 1 14 1275 1113 0 85 1174 0 95 1232 1 05 1287 1 15 1350 1133 0 92 1194 1 03 1252 1 14 1425 1154 1 01 1215 1 12 1500 1175 1 09
167. minimum position for three minutes or until the SAT gt 68 F The economizer integrator will then be reset and begin modulating to maintain the SASP after stage one has been energized for 90 seconds 72 When Y2 is energized the economizer will be modulated to control to a lower supply air setpoint SASP SATLO2 3 F If the SAT gt SASP 5 F it will close the economizer to minimum position for 3 minutes reset the integrator for the economizer then start modulating the economizer to maintain the SASP after the stage two has been on for 90 seconds This provides protection for the compressor against flooded starts and allow refrigerant flow to stabilize before modulating the economizer again By using return air across the evaporator coil just after the compressor has started allows for increased refrigerant flow rates providing better oil return of any oil washed out during compressor start up Routine No 3 If the OAT gt 68 F and the enthalpy is low and the OAT lt SPT then the economizer will open to 100 and compressors 1 and 2 will be cycled based on Y1 and Y2 inputs respectively If any of these conditions are not met the economizer will go to minimum position If there is no call for heating or cooling the economizer if available will maintain the SASP at 70 F Heating For gas or electric heat HS1 and HS2 outputs will follow W1 and W2 inputs respectively The fan will also be turned on if it is configured for ele
168. mperature SAT Sensor On The PremierLink controller see Fig 40 is compatible with Carrier Comfort Network CCN devices This control is designed to allow users the access and ability to change factory defined settings thus expanding the function of the standard unit control board CCN service access tools include System Pilot TM Touch Pilot TM and Service Tool Standard tier display tools Navigator and Scrolling Marquee are not suitable for use with latest PremierLink controller Version 2 x The PremierLink control is factory mounted in the 48TC unit s main control box to the left of the LCTB Factory wiring is completed through harnesses connected to the LCTB thermostat Field connections are made at a 16 pole terminal block TB1 located on the bottom shelf of the unit control box in front of the PremierLink controller The factory installed PremierLink control includes the supply air temperature SAT sensor The outdoor air temperature OAT sensor is included in the FIOP accessory EconoMif er 2 package Refer to Fig 40 for PremierLink connection locations NOTE Refer to Form 33CS 58SI for complete PremierLink configuration operating sequences and troubleshooting information Have a copy of this manual available at unit start up The PremierLink controller requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock This is necessary for broadc
169. n System Circuits Comp Type 1 1 Scroll 1 1 Scroll 1 1 Scroll Puron R 410a charge A B Ibs 13 75 15 25 20 0 Oil A B oz 60 85 110 Metering Device Acutrol Acutrol Acutrol High press Trip Reset psig 630 505 630 505 630 505 Low press Trip Reset psig 54 117 54 117 54 117 Evap Coil Material Cu Al Cu Al Cu Al Coil type 3 8 RTPF 3 8 RTPF 3 8 RTPF Rows FPI 3 15 3 15 4 15 Total Face Area ft 8 9 11 1 11 1 Condensate Drain Conn Size 3 4 3 4 3 4 Evap Fan and Motor 2 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt 3 Max BHP 17 1 7 2 4 2 RPM Range 489 747 518 733 591 838 5 Motor Frame Size 56 56 56 S e Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal ui Fan Diameter in 15x15 15x15 15x15 o Motor Qty Drive Type 1 Belt 1 Belt 1 Belt S Max BHP 2 9 24 3 7 d RPM Range 733 949 690 936 838 1084 58 Motor Frame Size 56 56 56 Dos Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal z Fan Diameter in 15x15 15x15 15x15 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt Sg Max BHP 5 25 3 7 5 25 a 8 RPM Range 909 1102 838 1084 1022 1240 5 s Motor Frame Size 145TY 56 145TY I Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal Fan Diameter in 15x15 15x15 15x15 Cond Coil Material Cu Al Cu Al Cu Al Coil type 3 8 RTPF 3 8 RTPF 3 8 RTPF Rows FPI 2 17 2 17 2 17 Total Face Area ft 20 5 21 4 25 1 Cond fan motor Qty Motor Drive Type 2
170. ndicates field supplied drive is required 1 Recommend using field supplied motor pulley part number KR11HY171 and belt part number KR30AEO39 92 APPENDIX III FAN PERFORMANCE cont 48TC 06 3 Phase 5 Ton Horizontal Supply AVAILABLE EXTERNAL STATIC PRESSURE in wg e 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 1500 800 0 39 904 0 49 999 0 60 1087 0 72 1169 0 85 1625 849 0 48 947 0 59 1038 0 70 1122 0 83 1201 0 96 1750 899 0 59 992 0 70 1078 0 82 1159 1235 1 08 1875 950 0 70 1038 0 82 1120 0 95 1198 1 08 1271 1 22 2000 1001 0 84 1085 0 96 1163 1 08 1238 1 23 1309 1 38 2125 1053 0 99 1133 142 1208 1 26 1280 1 40 1348 1 55 2250 1106 1 16 1 29 1254 1 44 1323 1 59 1389 1 74 2375 1159 134 1231 149 1300 1 64 1367 1 80 1430 1 96 2500 1212 1 55 1281 1 70 1348 1 86 1412 2 02 1473 2 19 AVAILABLE EXTERNAL STATIC PRESSURE in wg 12 14 1 6 1 8 2 0 CEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 1500 1247 0 98 1320 1433 1390 1 28 1457 1522 1 61 1625 1276 1 10 1348 1 24 1416 1 40 1544 1 73 1750 1308 1 22 1377 1 38 1444 1 53 1569 1 87 1875 1342 1 37 1409 1 52 1473 1 69 1536 1 86 1596 2 03 2000 1377 1 53 1442 1 69 1505 1565 2 03 1624 2 21 2125 1414 1 71 1477 1 87 1538 2 04 1597 2 22 1654 2 40 2250 1452 1 91 1514 2 08 1573 2 25 1686 2 62 2375 1492 212 1551 2 30
171. nditions must be true in order for this algorithm to run ndoor Fan has been ON for at least 30 seconds Heat mode is not active and the time guard between modes equals zero e If occupied and the SPT gt occupied cool setpoint plus 79 48TC the T56 slider offset e Space Temperature reading is available If it is unoccupied and the SPT gt unoccupied cool setpoint plus the T56 slider offset The indoor fan will be turned on by the staging algorithm If economizer is available and active and economizer open gt 85 and SAT gt SAT low limit 5 F and SPT gt effective setpoint 0 5 F OR Economizer is available but not active OR Economizer is not available OAT gt DX Lockout temperature If all of the above conditions are met the compressors will be energized as required otherwise they will be de energized There is a fixed 3 minute minimum on time and a 5 minute off time for each compressor output and a 3 minute minimum time delay between staging up or down Any time the compressors are running the RTU MP will stage down the compressors if the SAT becomes less than the cooling low supply air setpoint After a compressor is staged off it may be started again after a normal time guard period and the supply air temperature has increased above the low supply air setpoint Economizer The Economizer dampers are used to provide free cooling and Indoor Air Quality if optional CO senso
172. ne discrete input is ae y configured to provide the same function functions Misconfigured Analog In Alarm Generated Configure More then one analog input is configured to pro ut EES pile ao correctl vide the same function p analog inputs y i Alarm Generated Economizer and Low Faulty shorted or open thermistor caused by OAT Sonson Alain Gabaa ambient DX cooling LS wiring error or loose connection lockout disabled Alarm Generated Sensor reading is out of range Bad sensor bad Space RH Sensor Alarm sprh alarm palus Ec Automatic wiring or sensor configured incorrectly Outdoor RH Sensor oah alarm er Generated Automatic Sensor reading is out of range Bad sensor bad Alarm wiring or sensor configured incorrectly High Space Humidity sprh_hi Alarm Generated Automatic m Greater ten 70 for more ten 10 nds Low Space Humidity sprh lo Alarm Generated Automatic IRH is less then 35 for more then 10 minutes Alarm Generated Disables IAQ OC e Sensor reading is out of range Bad sensor bad IAQ Sensor Alarm ag alarm Ee ULO MANE wiring or sensor configured incorrectly mum position Alarm Generated Set Sensor reading is out of range Bad sensor bad QAQ Sensor Alarm oaq alarm OAQ to 400 Automatic wiring or sensor configured incorrectly a Dioxide co2 hi Alarm Generated Automatic CO2 reading is above 1200ppm Supply Fan Runtime clear the g NE Alarm sf rntm Alarm Generated timer Supply fan run time exceeded user defined limit Compressor 1
173. nected to the controller This will also occur if the PremierLink controller has been configured for electric heat or heat pump operation Cooling For cooling operation there must be 24 vac present on G When G is active the PremierLink controller will then determine if outdoor conditions are suitable for economizer cooling when an economizer damper is available A valid OAT SPT CCN space temperature and SAT supply air temperature sensor MUST be installed for proper economizer operation It recommended that an outdoor or differential enthalpy sensor also be installed If one is not present then a jumper is needed on the ENTH input on J4 which will indicate that the enthalpy will always be low Economizer operation will be based only on outdoor air dry bulb temperature The conditions are suitable when enthalpy is low OAT is less than OATL High Lockout for TSTAT and OAT is less than OATMAX the high setpoint for free cooling The default for OATL is 65 F The default for OATMAX is 75 F When all of the above conditions are satisfied and all the required sensors are installed the PremierLink controller will use the economizer for cooling One of three different control routines will be used depending on the temperature of the outside air The routines use a PID loop to control the SAT to a supply air setpoint SASP based on the error from setpoint SASPSAT The SASP is determined by the routine If an economizer is not av
174. ng inlet to the sampling tube on the basepan 6 For units with an economizer the sampling tube is in tegrated into the economizer housing but the connec tion of the flexible tubing to the sampling tube is the same C08127 Fig 22 Return Air Sensor Operating Position FIOP Smoke Detector Wiring and Response All units FIOP smoke detector is configured to automatically shut down all unit operations when smoke condition is detected See Fig 23 Smoke Detector Wiring Highlight A JMP 3 is factory cut transferring unit control to smoke detector Highlight B Smoke detector NC contact set will open on smoke alarm condition de energizing the ORN conductor 17 48TC Di Ir Z ACCESSORY POWE RETURN 24 VAC SMOKE EHR J 45 SENSOR SUPPLY SMOKE fe L sensor FROM POWER SCHEMATIC RED CONTROL BOARD TRAN SMOKE CONTROL M f ODULE l FIOP ACCESSOR M IFM OL ALL 3PH IFM YEL RED GRA RED V EXCEPT 5 258P BEA F I I T T T T T 1 ot m m GE e A a a e SES 222 Soa dd um i Bo O m cO m o c m bag JE e xs ols zl E des l rit GN ANA e l MEN JTS ra 3 A A Kees eOmmm tmtrermOmeg tou ti E eee ey EST YE H po tqt me A om l En l SS tt
175. nsor is installed the RTU MP will maintain indoor air quality within the space at the user configured differential setpoint The setpoint is the difference between the indoor air quality and an optional outdoor air quality sensor If the outdoor air quality is not present then a fixed value of 400ppm is used The following conditions must be true in order for this algorithm to run The mode is occupied Indoor Fan has been ON for at least 30 seconds Indoor Air Quality sensor has a valid reading As air quality within the space changes the minimum position of the economizer damper will be changed thus allowing more or less outdoor air into the space depending on the relationship of the indoor air quality to the differential setpoint If all the above conditions are true the IAQ algorithm will run and calculates an IAQ minimum position value using a PID loop The IAQ minimum damper position is then compared against the user configured economizer minimum position and the greatest value becomes the final minimum damper position of the economizer output 80 If the calculated IAO minimum position is greater than the IAQ maximum damper position configuration then it will be clamped to the configured value Demand Limit If the RTU MP receives a level 1 one degree offset 2 two degree offset or a 3 4 degree offset to the BACnet demand limit variable the controller will expand the heating and cooling setpoints by the configured
176. ommended Linkage will be active when it is initiated from the Linkage thermostat or the 3V Linkage Coordinator through CCN communications and requires no configuration Only one device can be linked to the PremierLink controller Once Linkage is active the PremierLink controller s own SPT temperature setpoints and occupancy are ignored and the controller will use the information provided by the remote linkage device The following information will be received from the remote linked device and can be viewed in the maintenance display table e Supervisory Element e Supervisory Bus e Supervisory Block Average Occupied Heat Setpoint Average Occupied Cool Setpoint Average Unoccupied Heat Setpoint Average Unoccupied Cool Setpoint Average Zone Temp Average Occupied Zone Temp Occupancy Status In return the PremierLink controller will provide its SAT and operating mode to the linked device It will convert its operating modes to Linkage modes See Table 30 Table 30 Linkage Modes ROOFTOP MODE VALUE LINKAGE MODE Demand Limit N A N A Heat 3 Heating Cool or Free Cooling 4 Cooling IAQ Control N A N A Temp Compensated pes Hoa 2 Wasp Temp Compensated L Cool Cooling IAQ Purge Pressurization Occupied Indoor Fan ON Cooling Unoccupied Free Unoccupied Free Cool 2 Cooling Fire Shutdown 7 Evac Factory Field Test 1 Off Off 1 Off The PremierLink con
177. on This input is an analog input and can be configured to be one of five different inputs No Sensor IAQ Sensor OAQ Sensor Space RH Sensor or Outdoor RH Sensor Input 2 is wired to pin J4 2 Factory Default 2 No Sensor Setpoint Slider Range This sets the slider range of the space sensor with this built in function The slider is used to offset the current control setpoint Factory Default 2 5 A F Range 0 15 A F 55 56 Override Duration This sets the occupancy override duration when the override button is pushed on the space sensor Factory Default 2 1 hr Range 0 24 hr IAQ Low Reference 0 4mA This is used when an IAQ sensor is installed on Input 1 or 2 This value is displayed and used when 4mA is seen at the input Factory Default 0 PPM Range 0 400 PPM IAQ High Reference 20mA This is used when an IAQ sensor is installed on Input 1 or 2 This value is displayed and used when 20mA is seen at the input Factory Default 2000 PPM Range 0 5000 PPM NOTE IAQ low Reference 4mA and IAQ High Reference 20mA are used to set the linear curve of mA vs PPM OAQ Low Reference 4mA This is used when an OAQ sensor is installed on Input 1 or 2 This value is displayed and used when 4mA is seen at the input Factory Default 0 PPM Range 0 400 PPM OAQ High Reference 20mA This is used when an OAQ sensor is installed on Input 1 or 2 This value is displayed and used when 20mA is seen at the input Factory Defaul
178. or The OAT is factory mounted in the EconoMi er 2 FIOP or accessory It is a nominal 10k ohm thermistor attached to an eyelet mounting ring See Table 15 for temperature resistance characteristic EconoMi er 2 The PremierLink control is used with EconoMi er 2 option or accessory for outdoor air management The damper position is controlled directly by the PremierLink control EconoMi er 2 has no internal logic device Outdoor air management functions can be enhanced with field installation of these accessory control devices Enthalpy control outdoor air or differential sensors Space CO sensor Outdoor air CO sensor Refer to Table 16 for accessory part numbers Field connections Field connections for accessory sensor and input devices are made at the 16 pole terminal block TB1 located on the control box bottom shelf in front of the PremierLink control Some input devices also require a 24 vac signal source connect at LCTB terminal R at THERMOSTAT connection strip for this signal source See connections figures on following pages for field connection locations and for continued connections at the PremierLink board inputs Table 17 provides a summary of field connections for units equipped with Space Sensor Table 18 provides a summary of field connections for units equipped with Space Thermostat Space Sensors The PremierLink controller is factory shipped configured for Space Sensor Mode A Carrier T
179. or add additional unit Restricted airflow Clean filter replace filter or remove any restrictions Blower speed too low Use high speed tap increase fan speed or install optional blower as suitable for individual units Limit switch cycles main burners Check rotation of blower thermostat heat anticipator settings and temperature rise of unit Adjust as needed Too much outdoor air Adjust minimum position Check economizer operation Poor Flame Characteristics Incomplete combustion lack of combustion air results in Aldehyde odors CO sooting flame or floating flame Check all screws around flue outlets and burner compartment Tighten as necessary Cracked heat exchanger Overfired unit reduce input change orifices or adjust gas line or manifold pressure Check vent for restriction Clean as necessary Check orifice to burner alignment Burners Will Not Turn Off Unit is locked into Heating mode for a one minute minimum Wait until mandatory one minute time period has elapsed or reset power to unit 32 Table 14 IGC Board LED Alarm Codes LED FLASH DESCRIPTION ACTION TAKEN BY RESET METHOD PROBABLE CAUSE CONTROL CODE On Normal Operation Loss of power to the IGC Check 5 amp fuse on IGC power to unit 24V circuit an Hardware Failure No gas heating ER breaker
180. or air CO sensor is designed to monitor carbon dioxide CO2 levels in the outside ventilation air and interface with the ventilation damper in an HVAC system The OAQ sensor is packaged with an outdoor cover See Fig 52 The outdoor air CO2 sensor must be located in the economizer outside air hood La 414 be 3 3 4 3 5 gt Ke 6 1 2 COVER REMOVED SIDE VIEW C07135 Fig 52 Outdoor Air Quality Sensor Cover Wiring the Outdoor Air CO Sensor A dedicated power supply is required for this sensor A two wire cable is required to wire the dedicated power supply for the sensor The two wires should be connected to the power supply and terminals 1 and 2 To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the OAQ sensor See Fig 50 Connect the 4 to 20 mA terminal to 48TC s terminal TB1 11 Connect the SIG COM terminal to 48TC s terminal TB1 13 See Fig 53 OAQ Sensor RH Sensor TB1 PL ronn e 24 VAC C08275 Fig 53 Outdoor CO Sensor Connections Refer to Form 33CS 58SI PremierLink Installation Start up and Configuration Instructions for detailed configuration information Smoke Detector Fire Shutdown FSD This function is available only when PremierLink is configured for Space Sensor Mode The unit is factory wired for PremierLink FSD operation when PremierLink is factory instal
181. or maximum occupancy A proportional anticipatory strategy will cause the fresh air supplied to increase as the room CO level increases even though the CO2 setpoint has not been reached By the time the CO level reaches the setpoint the damper will be at maximum ventilation and should maintain the setpoint In order to have the CO sensor control the economizer damper in this manner first determine the damper voltage output for minimum or base ventilation Base ventilation is the ventilation required to remove contaminants during unoccupied periods The following equation may be used to determine the percent of outside air entering the building for a given damper position For best results there should be at least a 10 degree difference in outside and return air temperatures TR x i 100 2 100 TM To Outdoor Air Temperature OA Percent of Outdoor Air Tg Return Air Temperature RA Percent of Return Air TM Mixed Air Temperature Once base ventilation has been determined set the minimum damper position potentiometer to the correct position The same equation can be used to determine the occupied or maximum ventilation rate to the building For example an output of 3 6 volts to the actuator provides a base ventilation rate of 5 and an output of 6 7 volts provides the maximum ventilation rate of 20 or base plus 15 cfm per person Use Fig 82 to determine the maximum setting of the CO2 sensor For example an 1100 ppm
182. ow converges into secondary tubes The secondary tubes exit into the induced draft fan wheel inlet The induced fan wheel discharges into a flue passage and flue gases exit out a flue hood on the side of the unit The induced draft fan motor includes a Hall Effect sensor circuit that confirms adequate wheel speed via the Integrated Gas Control IGC board Safety switches include a Rollout Switch at the top of the burner compartment and a limit switch mounted through the fan deck over the tubes See Fig 27 and Fig 28 INDUCED ROLLOUT DRA XV SWITCH MOTOR W MOUNTING I PLATE x oo y 5 Du D Wu BURNER SECTION FLUE EXHAUST el VESTIBULE INDUCED TA ROLL DRAFT BERE a MOTOR DAL E Bower I lt HOUSING NIFOL e PRESSURE e GAS Z VAVE C06152 Fig 27 Burner Section Details 22 Limit Switch and Shield IO CONO Co8284 Fig 28 Limit Switch Location Fuel Types and Pressures Natural Gas The 48TC unit is factory equipped for use with Natural Gas fuel at elevation under 2000 ft 610 m See section Orifice Replacement for information in modifying this unit for installation at elevations above 2000 ft 610 m Gas line pressure entering the unit s main gas valve must be within specified ranges Adjust unit gas regulator valve as required or consult local gas utility Table 4 Natural Gas Supply Line Pressure Ranges UNIT MODE
183. pm Z m 1100 ppm 8 2000 e LI 2 1000 ba 0 2 3 4 5 6 7 8 DAMPER VOLTAGE FOR MAX VENTILATION RATE C06039 Fig 82 CO Sensor Maximum Range Settings If a separate field supplied transformer is used to power the IAQ sensor the sensor must not be grounded or the EconoMid er IV control board will be damaged When using demand ventilation the minimum damper position represents the minimum ventilation position for VOC volatile organic compounds ventilation requirements The maximum demand ventilation position is used for fully occupied ventilation When demand ventilation control is not being used the minimum position potentiometer should be used to set the occupied ventilation position The maximum demand ventilation position should be turned fully clockwise Exhaust Setpoint Adjustment The exhaust setpoint will determine when the exhaust fan runs based on damper position if accessory power exhaust is installed The setpoint is modified with the Exhaust Fan Setpoint EXH SET potentiometer See Fig 76 The setpoint represents the damper position above which the exhaust fans will be turned on When there is a call for exhaust the EconoMi er IV controller provides a 45 15 second delay before exhaust fan activation to allow the dampers to open This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload Minimum Position Control There is a minimum damper position potentiomete
184. r Safety CMPSAFE Supply Fan Status SFS and Filter Pressure Switch FILTER Economizer controls Outdoor Air Enthalpy Control PNO HH57AC077 The enthalpy control HH57ACO77 is available as a field installed accessory to be used with the EconoMi er2 damper system The outdoor air enthalpy sensor is part of the enthalpy control The separate field installed accessory return air enthalpy sensor HH57AC078 is required for differential enthalpy control See below Locate the enthalpy control in the economizer hood Locate two GRA leads in the factory harness and connect these leads to enthalpy control sensors 2 and 3 See Fig 48 Connect the enthalpy control power input terminals to economizer actuator power leads RED connect to TR and BLK connect to TR1 LCTB ECON GRA 6 a RA 7 Factory Wiring Harness C08218 Fig 48 Enthalpy Switch HH57AC077 Connections Enthalpy Switch The outdoor enthalpy changeover setpoint is set at the enthalpy controller The enthalpy control receives the outdoor air enthalpy from the outdoor air enthalpy sensor and provides a dry contact switch input to the PremierLink controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position Differential Enthalpy Control Differential enthalpy control is provided by sensing and comparing the outside air and
185. r air quality becomes greater then this value the damper position will stay at the IAQ Greatest Min Dmpr Pos configuration point Factory Default 2 650 PPM Range 300 950 PPM IAQ Greatest Min Dmpr Pos This is the greatest minimum position the economizer will open to while trying to control the indoor air quality CO2 differential Factory Default 50 open Range 10 60 open Clockset This submenu screen allows you to set the date and time manually The Daylight Savings Time DST can also be changed here The date and time is automatically set when ever software is downloaded The clock is a 24 hour clock and not am pm The time should be verified and maybe changed according to unit location and time zone Factory Default Eastern Standard Time USERPW This submenu screen allows you to change the user password to a four number password of choice The User password change screen is only accessible with the Administrator Password 1111 The ADMIN password will always override the user password OPERATING SEQUENCES Base Unit Controls Cooling Units Without Economizer When thermostat calls for cooling terminals G and Y1 are energized The indoor fan contactor IFC and compressor contactor are energized and indoor fan motor compressor and outdoor fan starts The outdoor fan motor runs continuously while unit is cooling Heating Units Without Economizer When the thermostat calls for heating terminal W1 is
186. r dry bulb sensor is Dry Bulb factory installed Differential Dry Bulb CRTEMPSNO02A00 Single Enthalpy HH57AC078 Differential Enthalpy HH57AC078 and CRENTDIFOO4A00 CO for DCV Control using a Wall Mounted EE RE CO Sensor CO for DCV Control using a 33ZCSENCO2t and O DuctMounted 33ZCASPCO2 p CRCBDIOXO0SA00TT CO Sensor CRENTDIF004A00 and CRTEMPSNO02A00 accessories are used on many different base units As such these kits may contain parts that will not be needed for installation T 33ZCSENCO2 is an accessory CO sensor 33ZCASPCO2 is an accessory aspirator box required for duct mounted applications tt CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2 and 33ZCASPCO2 accessories 3 Use the Up Down button to select the preset number See Table 28 4 Press Enter to lock in the selection 5 Press Mode to exit and resume normal operation The custom settings of the CO sensor can be changed anytime after the sensor is energized Follow the steps below to change the non standard settings 1 Press Clear and Mode buttons Hold at least 5 seconds until the sensor enters the Edit mode 2 Press Mode twice The STDSET Menu will appear 3 Use the Up Down button to toggle to the NONSTD menu and press Enter 4 Use the Up Down button to toggle through each of the nine variables starting with Altitude until the desired setting is reached 5 Press Mode to move through the variabl
187. r is installed when the outside conditions are suitable The following conditions must be true for economizer operation ndoor Fan has been on for at least 30 seconds Enthalpy is Low if the Enthalpy input is enabled SAT reading is available OAT reading is available SPT reading is available OAT High OAT economizer lockout configuration default 75 OAT SPT If any of the mentioned conditions are not true the economizer will be set to its configured minimum position The minimum damper position can be overridden by the IAQ routine described later in this section If the above conditions are true the Economizer Control Master Loop will calculate a damper position value based on the following calculation Damper Position minimum position PID SPT econ setpoint Econ setpoint is half way between the effective cool and heat setpoints If the SAT drops below the cooling low supply air setpoint 5 F the economizer will ramp down to minimum position Power Exhaust If RTU MP is also controlling an exhaust fan it can be enabled based on damper position or by occupancy If configured for continuous occupied operation it will be energized whenever the controller is in the occupied mode and disabled when in the unoccupied mode If configured for damper position control it will be energized whenever the economizer exceeds the power exhaust setpoint and disabled when the economizer drops belo
188. r on the EconoMi er IV controller See Fig 76 The minimum damper position maintains the minimum airflow into the building during the occupied period When using demand ventilation the minimum damper position represents the minimum ventilation position for VOC volatile organic compound ventilation requirements The maximum demand ventilation position is used for fully occupied ventilation When demand ventilation control is not being used the minimum position potentiometer should be used to set the occupied ventilation position The maximum demand ventilation position should be turned fully clockwise Adjust the minimum position potentiometer to allow the minimum amount of outdoor air as required by local codes to enter the building Make minimum position adjustments with at least 10 F temperature difference between the outdoor and return air temperatures 60 To determine the minimum position setting perform the following procedure 1 Calculate the appropriate mixed air temperature using the following formula O mp RA To Outdoor Air Temperature OA Percent of Outdoor Air Tg Return Air Temperature RA Percent of Return Air TM Mixed Air Temperature As an example if local codes require 10 outdoor air during occupied conditions outdoor air temperature is 60 F and return air temperature is 75 F 60 x 10 75 x 90 73 5 F 2 Disconnect the supply air sensor from terminals T and TI 3 Ensu
189. r s supply input terminals If power is not present replace or re pair wiring as required Remote Test Reset Station s Trouble LED Does Not flash When Performing a Dirty Test But the Control ler s Trouble LED Does 1 Verify that the remote test station is wired as shown in Fig 24 Repair or replace loose or missing wiring 2 Configure the sensor dirty test to activate the control ler s supervision relay See Changing sensor dirty test operation Sensor s Trouble LED is On But the Controller s Trouble LED is OFF Remove JP1 on the controller PROTECTIVE DEVICES Compressor Protection Overcurrent The compressor has internal linebreak motor protection Overtemperature The compressor has an internal protector to protect it against excessively high discharge gas temperatures High Pressure Switch The system is provided with a high pressure switch mounted on the discharge line The switch is stem mounted and brazed into the discharge tube Trip setting is 630 psig 10 psig 4344 69 kPa when hot Reset is automatic at 505 psig 3482 kPa Low Pressure Switch The system is protected against a loss of charge and low evaporator coil loading condition by a low pressure switch located on the suction line near the compressor The switch is stem mounted Trip setting is 54 psig 5 psig 372 34 kPa Reset is automatic at 117 5 psig 807 34 kPa Evaporator Freeze Protection The system is
190. ral Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AZ002 and belt part no KR29AF054 95 48TC FAN PERFORMANCE cont 48TC 09 3 PHASE 8 5 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 2550 497 0 48 579 0 61 651 0 75 717 0 90 777 1 05 2763 524 0 58 602 0 72 671 0 87 735 794 1 19 2975 551 0 70 626 0 86 693 1 01 754 1 18 812 1 35 3188 580 0 84 651 1 00 716 1 17 775 1 34 831 1 52 3400 609 1 00 677 1 17 739 1 35 797 1 53 851 1 71 3613 638 1 17 703 1 35 763 1 54 819 1 73 871 1 93 3825 668 1 37 730 1 56 788 1 76 842 1 96 893 2 16 4038 698 1 59 1 79 813 2 00 866 2 20 915 2 42 4250 728 1 83 786 2 04 839 2 26 890 2 47 938 2 70 AVAILABLE EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 VEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 2550 833 1 21 886 1 38 936 1 56 984 1 74 1029 1 93 2763 849 1 36 900 1 53 950 1 72 996 1 90 1041 2 10 2975 865 1 52 916 1 70 964 1 89 1010 2 09 1054 2 29 3188 883 1 70 933 1 89 980 2 09 1025 2 29 1068 2 50 3400 902 1 90 950 2 10 996 2 30 1041 2 51 1083 2 73 3613 921 2 13 969 2 33 1014 2 54 1057 2 76 3825 941 2 37 988 2 58 1032 2 80 1075 3 02 4038
191. ration table then the AUXO output HS3 will be energized whenever the PremierLink controller is in the occupied mode If the MODPE is disabled then AUXO output will be energized based on the Power Exhaust Setpoint PES in the SETPOINT table Heating The heat stages are controlled by the Heating Control Loop which is used to calculate the desired SAT needed to satisfy the space It will compare the SPT to the Occupied Heat Setpoint OHSP the T56 slider offset STO when occupied and the Unoccupied Heat Setpoint UHSP Unoccupied Heating Deadband if unoccupied to calculate a Staged Heat Submaster Reference SHSR The heat staging algorithm compares the SHSR to the actual SAT to calculate the required number of heating stages to satisfy the load This loop runs every 40 seconds The following conditions must be met in order for this algorithm to run Indoor fan has been ON for at least 30 seconds Cool mode is not active and the time guard between modes equals zero Mode is occupied or the Temperature Compensated Start or Heat mode is active 75 48TC e SPT reading is available and OHSP STO If it is unoccupied and the SPT UHSP Unoccupied Heating Deadband The indoor fan will be turn on by the staging algorithm When all of the above conditions are met the SHSR is calculated and up to 3 stages of heat will turned on and off to satisfy to maintain the SAT SHSR If any of the above condition
192. re information see General Fan Performance Notes on page 87 Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AZ002 and belt part no KR29AF054 48TC 08 3 PHASE 7 5 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 2250 518 0 54 595 0 76 665 1 01 728 1 27 786 1 56 2438 541 0 65 620 0 89 688 1 14 750 806 1 71 2625 570 0 77 645 1 02 712 1 29 772 1 58 827 1 88 2813 600 0 91 672 1 18 736 1 46 794 1 76 848 2 07 3000 629 1 07 699 1 35 761 1 64 818 1 95 871 2 28 3188 660 1 25 726 1 54 787 1 85 842 2 17 894 2 51 3375 690 1 45 1 75 813 2 07 867 2 41 917 2 76 3563 783 1 98 840 2 32 892 2 67 941 3 03 3750 752 1 91 812 2 24 867 2 59 918 2 95 966 3 32 AVAILABLE EXTERNAL STATIC PRESSURE in wg CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 2250 839 1 86 889 2 18 935 2 52 980 2 87 1022 3 23 2438 858 2 02 907 2 35 953 997 3 06 1039 3 43 2625 878 2 20 926 2 54 972 2 89 1015 3 26 1056 3 64 2813 899 2 40 946 2 75 991 3 11 1033 3 49 1074 3 88 3000 920 2 62 966 2 98 1010 3 35 1052 3 74 1093 4 14 3188 987 3 23 1031 3 61 1072 4 01 3375 964 3 12 1009 3 50 1052 3 89 1093 4 30 3563 988 3 41 1032 3 80 1074 4 20 1152 5 04 3750 1011 3 71 1054 4 11 1096 4 53 NOTE For more information see Gene
193. re that the factory installed jumper is in place across terminals P and PI If remote damper positioning is being used make sure that the terminals are wired according to Fig 59 and that the minimum position potentiometer is turned fully clockwise 4 Connect 24 vac across terminals TR and TRI 5 Carefully adjust the minimum position potentiometer until the measured mixed air temperature matches the calculated value 6 Reconnect the supply air sensor to terminals T and T1 Remote control of the EconoMi er IV damper is desirable when requiring additional temporary ventilation If a field supplied remote potentiometer Honeywell part number S963B1128 is wired to the EconoMi er IV controller the minimum position of the damper can be controlled from a remote location To control the minimum damper position remotely remove the factory installed jumper on the P and PI terminals on the EconoMi er IV controller Wire the field supplied potentiometer to the P and P1 terminals on the EconoMi er IV controller See Fig 81 Damper Movement Damper movement from full open to full closed or vice versa takes 2 2 minutes Thermostats The EconoMi er IV control works with conventional thermostats that have a Y1 cool stage 1 Y2 cool stage 2 W1 heat stage 1 W2 heat stage 2 and G fan The EconoMi er IV control does not support space temperature sensors Connections are made at the thermostat terminal connection board locate
194. rease speed and away from fixed flange to decrease speed Increasing fan speed increases load on motor Do not exceed maximum speed specified 5 Set movable flange at nearest keyway of pulley hub and tighten setscrew to torque specifications To align fan and motor pulleys 1 Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft Make angular align ment by loosening motor from mounting 3 Tighten fan pulley setscrews and motor mounting bolts to torque specifications 4 Recheck belt tension a STRAIGHT EDGE MUST BE PARALLEL WITH BELT MOTOR AND FAN SHAFTS MUST BE PARALLEL N Fig 6 Supply Fan Pulley Adjustment MOVABLE FLANGE SETSCREWS FIXED FLANGE SINGLE GROOVE C07075 Bearings This fan system uses bearings featuring concentric split locking collars The collars are tightened through a cap screw bridging the split portion of the collar The cap screw has a Torx T25 socket head To tighten the locking collar Hold the locking collar tightly against the inner race of the bearing and torque the cap screw to 65 70 in lb 7 4 7 9 Nm See Fig 7 C08121 Fig 7 Tightening Locking Collar Motor When replacing the motor also replace the external tooth lock washer star washer under the motor mounting base this is part of the motor grounding system Ensure the teeth on the lock washer are in contact with the motor s painted base Tighten motor mounting bolts to 120 1
195. reset of the non volatile memory to factory defaults turn the controller power off if it is on move the switch from position 1 to position 0 and then apply power to the controller for a minimum of 5 seconds At this point no action occurs but the controller is now ready for the memory to reset Remove power to the controller again and move the switch from position 0 to position 1 This time when power is applied the memory will reset to factory defaults The controller address will return to bus 0 element 31 indicating that memory reset occurred Refer to Installation Instruction 33CS 58SI for full discussion on configuring the PremierLink control system START UP RTU MP CONTROL Field Service Test explained below will assist in proper start up Configuration of unit parameters scheduling options and operation are also discussed in this section Field Service Test The Field Service Test function can be used to verify proper operation of compressors heating stages indoor fan power exhaust fans economizer and dehumidification Use of Field Service Test is recommended at initial system start up and during troubleshooting See Form 48 50H T 2T Appendix A for Field Service Test Mode table Field Service Test mode has the following changes from normal operation Outdoor air temperature limits for cooling circuits economizer and heating are ignored Normal compressor time guards and other staging delays are ignor
196. reset the power to the unit To shut off unit set system selector switch at OFF position Resetting heating selector lever below room temperature will temporarily shut unit off until space temperature falls below thermostat setting Ventilation Continuous Fan Set fan and system selector switches at ON and OFF positions respectively Evaporator fan operates continuously to provide constant air circulation When the evaporator fan selector switch is turned to the OFF position there is a 30 second delay before the fan turns off 67 48TC START UP PREMIERLINK CONTROLS A WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death The unit must be electrically grounded in accordance with local codes and NEC ANSI NFPA 70 American National Standards Institute National Fire Protection Association Use the Carrier network communication software to start up and configure the PremierLink controller Changes can be made using the ComfortWORKS software ComfortVIEW software Network Service Tool System Pilot device or Touch Pilot device The System Pilot and Touch Pilot are portable interface devices that allow the user to change system set up and setpoints from a zone sensor or terminal control module During start up the Carrier software can also be used to verify communication with PremierLink controller NOTE All set up and setpoint configurations are fa
197. return air enthalpy conditions Install the outdoor air enthalpy control as described above Add and install a return air enthalpy sensor Return Air Enthalpy Sensor Mount the return air enthalpy sensor HH57ACO078 in the return air duct The return air sensor is wired to the enthalpy controller HH57AC077 See Fig 49 ENTHALPY CONTROLLER OUTDOOR Lis OU l ENTHALPY SENSOR LIS RETURN AIR CT ENTHALPY SENSOR IN UNIT WIRE HARNESS GRAY RED NOTES Remove factory installed jumper across SR and before connecting wires from return air sensor Switches shown in high outdoor air enthalpy state Terminals 2 and 3 close on low outdoor air enthalpy relative to indoor air enthalpy 3 Remove sensor mounted on back of control and locate in outside air stream moa C06019 Fig 49 Outside and Return Air Enthalpy Sensor Wiring To wire the return air enthalpy sensor perform the following 1 Use a 2 conductor 18 or 20 AWG twisted pair cable to connect the return air enthalpy sensor to the enthal py controller 2 At the enthalpy control remove the factory installed resistor from the SR and terminals 3 Connect the field supplied RED wire to spade connector on the return air enthalpy sensor and the SR terminal on the enthalpy controller Connect the BLK wire to S spade connector on the return air enthalpy sensor and the SR terminal on the enthalpy controller N
198. roller have the same communication settings 8 data bits No Parity and 1 stop bit 5 Verify that the controller has a unique N2 slave ad dress on the N2 bus The controller s N2 slave ad dress is set by its rotary address switches 6 Verify proper wiring between the BAS and the con troller 7 Verify that the BAS is reading or writing to the proper network point addresses on the controller Download the latest points list for the controller to verify 8 Verify that the BAS is sending his requests to the proper slave address of our controller NOTE See RTU MP 3rd Party Integration Guide or alternatively Form 48 50H T 1T Appendix for N2 Protocol Conformance Statement ECONOMIZER SYSTEMS The 48TC units may be equipped with a factory installed or accessory field installed economizer system Two types are available with a logic control system EconoMi er IV and without a control system EconoMi er2 for use with external control systems such as PremierLink See Fig 70 and Fig 71 for component locations on each type See Fig 72 and Fig 73 for economizer section wiring diagrams Both EconoMi ers use direct drive damper actuators ECONOMISER IV CONTROLLER WIRING OUTSIDE AIR HARNESS TEMPERATURE SENSOR LOW AMBIENT SENSOR ACTUATOR b d al c c n o Co6021 Fig 70 EconoMi er IV Component Locations OUTDOOR AIR HOOD HOOD SHIPPING BRAC
199. rst and leave it on to test other Circuits The Heating submenu is used to change output status for the individual heat stages gas or electric The fans and cooling service test outputs are reset to OFF for the heating service test All normal heating alarms and alerts are functional Configuration The RTU MP controller configuration points affect the unit operation and or control Review and understand the meaning and purpose of each configuration point before changing it from the factory default value The submenus containing configuration points are as follows Unit Cooling Heating Inputs Economizer IAQ Clock Set and User Password USERPW Each configuration point is described below under its according submenu See Form 48 50H T 2T Appendix for display tables Unit Start Delay This refers to the time delay the unit will wait after power up before it pursues any specific operation Factory Default 5 sec Range 0 600 sec Filter Service Hours This refers to the timer set for the Dirty Filter Alarm After the number of runtime hours set on this point is exceeded the corresponding alarm will be generated and must be manually cleared on the alarm reset screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 2 600 hr NOTE Setting this configuration timer to 0 disables the alarm Supply Fan Service Hours This re
200. s after initial start Return air filter replacement Outdoor hood inlet filters cleaned Belt tension checked Belt condition checked Pulley alignment checked Fan shaft bearing locking collar tightness checked Condenser coil cleanliness checked Condensate drain checked Seasonal Maintenance These items should be checked at the beginning of each season or more often if local conditions and usage patterns dictate Air Conditioning Condenser fan motor mounting bolts tightness Compressor mounting bolts Condenser fan blade positioning Control box cleanliness and wiring condition Wire terminal tightness Refrigerant charge level Evaporator coil cleaning Evaporator blower motor amperage Heating Heat exchanger flue passageways cleanliness Gas burner condition Gas manifold pressure Heating temperature rise Economizer or Outside Air Damper nlet filters condition Check damper travel economizer Check gear and dampers for debris and dirt Air Filters and Screens Each unit is equipped with return air filters If the unit has an economizer it will also have an outside air screen If a manual outside air damper is added an inlet air screen will also be present Each of these filters and screens will need to be periodically replaced or cleaned Return Air Filters Return air filters are disposable fiberglass media type Access to the filters is through the small lift ou
201. s and sensor wires at the Integ rated Gas Unit Controller IGC See Fig 34 7 Remove the 2 screws that attach the burner rack to the vestibule plate Fig 31 8 9 Slide the burner tray out of the unit Fig 33 To reinstall reverse the procedure outlined above Cleaning and Adjustment 1 Remove burner rack from unit as described in Re moval and Replacement of Gas Train section above Inspect burners if dirty remove burners from rack Mark each burner to identify its position before re moving from the rack Use a soft brush to clean burners and cross over port as required Adjust spark gap See Fig 35 and Fig 36 If factory orifice has been removed check that each orifice is tight at its threads into the manifold pipe and that orifice projection does not exceed maximum valve See Fig 32 Reinstall burners on rack in the same locations as factory installed The outside crossover flame re gions of the outermost burners are pinched off to pre vent excessive gas flow from the side of the burner assembly If the pinched crossovers are installed between two burners the flame will not ignite prop erly INTEGRATED GAS UNIT RACEWAY CONTROLLER IGC HOLE IN END PANEL HIDDEN C08454 Fig 34 Unit Control Box IGC Location 7 Reinstall burner rack as described in Removal and Replacement of Gas Train section above Gas Valve All three phase mo
202. s and then sliding the motor and plate away from the fan housing until proper tension is achieved 6 Check the alignment of the pulleys adjust if neces sary 7 Tighten all bolts 8 Check the tension after a few hours of runtime and re adjust as required Adjustable Pitch Pulley on Motor The motor pulley is an adjustable pitch type that allows a servicer to implement changes in the fan wheel speed to match as installed ductwork systems The pulley consists of a fixed flange side that faces the motor secured to the motor shaft and a movable flange side that can be rotated around the fixed flange side that increases or reduces the pitch diameter of this driver pulley See Fig 6 As the pitch diameter is changed by adjusting the position of the movable flange the centerline on this pulley shifts laterally along the motor shaft This creates a requirement for a realignment of the pulleys after any adjustment of the movable flange Also reset the belt tension after each realignment Check the condition of the motor pulley for signs of wear Glazing of the belt contact surfaces and erosion on these surfaces are signs of improper belt tension and or belt slippage Pulley replacement may be necessary To change fan speed 1 Shut off unit power supply 2 Loosen belt by loosening fan motor mounting nuts See Fig 5 3 Loosen movable pulley flange setscrew See Fig 6 4 Screw movable flange toward fixed flange to inc
203. s are not met the SHSR is set to its minimum value of 35 F The Staged Heat Submaster Reference SHSR is calculated as follows SHSR Heating PID function on error where error OHSP STO Space Temperature The Maximum SHSR is determined by the SATHI configuration If the supply air temperature exceeds the SATHI configuration value then the heat stages will turn off Heat staging will resume after a delay to allow the supply air temperature to drop below the SATHI value The maximum number of stages available is dependent on the type of heat and the number of stages programmed in the CONFIG and SERVICE configuration tables Staging will occur as follows for gas electric units Carrier heat pumps with a defrost board or cooling units with electric heat For Heating PID STAGES 2 HEAT STAGES 1 50 capacity energize HS1 HEAT STAGES 2 100 capacity energize HS2 For Heating PID STAGES 3 and AUXOUT HS3 HEAT STAGES 1 33 capacity if energize HS1 HEAT STAGES 2 66 capacity energize HS2 HEAT STAGES 3 100 capacity energize HS3 Staging will occur as follows For heat pump units with AUXOUT configured as reversing valve For Heating PID STAGES 2 and AUXOUT Reversing Valve Heat the H3 EX RV output will stay energized until there is a cool demand HEAT STAGES 1 50 capacity shall energize CMP1 CMP2 RVS HEAT STAGES 2 100 capacity shall energize HS1 and HS2 Heating PID STAGES 3
204. s wired to the enthalpy controller HH57ACO77 See Fig 49 To wire the return air enthalpy sensor perform the following 1 Use a 2 conductor 18 or 20 AWG twisted pair cable to connect the return air enthalpy sensor to the enthal py controller 2 At the enthalpy control remove the factory installed resistor from the SR and terminals 3 Connect the field supplied RED wire to spade connector on the return air enthalpy sensor and the SR terminal on the enthalpy controller Connect the BLK wire to S spade connector on the return air enthalpy sensor and the SR terminal on the enthalpy controller NOTE The enthalpy control must be set to the D setting for differential enthalpy control to work properly The enthalpy control receives the indoor and return enthalpy from the outdoor and return air enthalpy sensors and provides a dry contact switch input to the RTU MP controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position Indoor Air Quality CO2 sensor The indoor air quality sensor accessory monitors space carbon dioxide CO2 levels This information is used to monitor IAQ levels Several types of sensors are available for wall mounting in the space or in return duct with and without LCD display and in combination with space temperature sensors Sensors use infrared technology to measure the
205. sens Al 10K Thermistor J2 3 4 Space Temperature Offset Pot sptopot Al 100K Potentiometer J20 3 Indoor Air Quality iaq Al 4 20 ma J4 2 3 Outdoor Air Quality oaq Al 4 20 ma J4 5 6 Safety Chain Feedback safety DI 24 VAC J1 9 Compressor Safety compstat DI 24 VAC J1 2 Fire Shutdown firedown DI 24 VAC J1 10 Enthalpy Switch enthalpy DI 24 VAC J2 6 7 Humidistat Input Status humstat DI 24 VAC J5 7 8 CONFIGURABLE INPUTS Space Relative Humidit sprh Al 4 20 ma x Air Relative kan l t a A 4 20 ma ome bati ke Supply Fan Status fanstat DI 24 VAC Filter Status filtstat DI 24 VAC db EE Remote Occupancy Input remocc DI 24 VAC i i OUTPUTS Economizer Commanded Position econocmd 4 20ma J2 5 Supply Fan Relay State sf DO Relay 24VAC 1A J1 4 Compressor 1 Relay State comp 1 DO Relay 24VAC 1A J1 8 Compressor 2 Relay State comp 2 DO Relay 24VAC 1A J1 7 Heat Stage 1 Relay State heat 1 DO Relay 24VAC 1A J1 6 Heat Stage 2 Relay State heat 2 DO Relay 24VAC 1A J1 5 Power Exhaust Relay State aux 2 DO Relay 24VAC 1A J11 3 Dehumidification Relay State humizer DO Relay 24VAC 1A J11 7 8 LEGEND Al Analog Input AO Analog Output DI Discrete Input DO Discrete Output These inputs if installed take the place of the default input on the specific channel according to schematic Parallel pins J5 1 J2 6 J5 3 J1 10 J5 5 J1 2 are
206. sensor when the Dirty LED is flashing continuously or sooner if conditions warrant A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern If the smoke detector is connected to a fire alarm system first notify the proper authorities that the detector is undergoing maintenance then disable the relevant circuit to avoid generating a false alarm 1 Disconnect power from the duct detector then remove the sensor s cover See Fig 25 Sampling HVAC duct I Sensor housing Airflow I Retainer clip Optic housing C07305 Fig 25 Sensor Cleaning Diagram 2 Using a vacuum cleaner clean compressed air or a soft bristle brush remove loose dirt and debris from inside the sensor housing and cover Use isopropyl alcohol and a lint free cloth to remove dirt and other contaminants from the gasket on the sensor s cover 3 Squeeze the retainer clips on both sides of the optic housing then lift the housing away from the printed circuit board 4 Gently remove dirt and debris from around the optic plate and inside the optic housing 5 Replace the optic housing and sensor cover 6 Connect power to the duct detector then perform a sensor alarm test INDICATORS Normal State The smoke detector operates in the normal state in the absence of any trouble conditions and when its sensing chamber is free of smoke In the normal
207. setpoint relates to a 15 cfm per person design Use the 1100 ppm curve on Fig 82 to find the point when the CO sensor output will be 6 7 volts Line up the point on the 61 48TC graph with the left side of the chart to determine that the range configuration for the CO2 sensor should be 1800 ppm The EconoMi er IV controller will output the 6 7 volts from the CO sensor to the actuator when the CO concentration in the space is at 1100 ppm The DCV setpoint may be left at 2 volts since the CO sensor voltage will be ignored by the EconoMi er IV controller until it rises above the 3 6 volt setting of the minimum position potentiometer Once the fully occupied damper position has been determined set the maximum damper demand control ventilation potentiometer to this position Do not set to the maximum position as this can result in over ventilation to the space and potential high humidity levels CO Sensor Configuration The CO sensor has preset standard voltage settings that can be selected anytime after the sensor is powered up See Table 28 Use setting 1 or 2 for Carrier equipment See Table 28 1 Press Clear and Mode buttons Hold at least 5 seconds until the sensor enters the Edit mode 2 Press Mode twice The STDSET Menu will appear Table 28 EconoMi er IV Sensor Usage ECONOMISER IV WITH OUTDOOR AIR DRY APPLICATION BULB SENSOR Accessories Required Outdoor Air None The outdoor ai
208. shed commands from the CCN loadshed controller When a redline alert is received the control will set the maximum stage of capacity equal to the stage of capacity that the unit is operating at when the redline alert was initiated When loadshed command is received the control will reduce capacity as shown in Table 31 Table 31 Loadshed Command Gas and Electric Heat Units CURRENT CAPACITY NEW CAPACITY CMP1 DX Cooling OFF CMP1 CMP2 CMP1 HS1 Heat OFF HS1 HS2 HS3 HS1 The controller will have a maximum demand limit timer of 1 hour that prevents the unit from staying in load shed or redline alert longer than 1 hour in the event the controller loses communication with the network load shed module Should the maximum demand limit timer expire prior to receiving the loadshed device command from CCN the control will stop demand limit mode and return to normal operation RTU MP Sequence of Operation The RTU MP will control the compressor economizer and heating outputs based on its own space temperature input and setpoints An optional CO IAQ sensor mounted in the space can influence the economizer minimum position The RTU MP has its own hardware clock that is set automatically when the software is installed on the board The RTU MP s default is to control to occupied setpoints all the time until a type of occupancy control is set Occupancy types are described in the scheduling section The following
209. sion by using a spring force tool such as Browning s Part Number Belt Tension Checker or equivalent tool tension should be 6 Ibs at a 5 8 in deflection when measured at the centerline of the belt span This point is at the center of the belt when measuring the distance between the motor shaft and the blower shaft NOTE Without the spring tension tool place a straight edge across the belt surface at the pulleys then deflect the belt at mid span using one finger to a 1 2 in deflection Adjust belt tension by loosening the motor mounting plate front bolts and rear bolt and sliding the plate toward the fan to reduce tension or away from fan to increase tension Ensure the blower shaft and the motor shaft are parallel to each other pulleys aligned Tighten all bolts when finished To replace the belt 1 Use a belt with same section type or similar size Do not substitute a FHP type belt When installing the new belt do not use a tool screwdriver or pry bar to force the belt over the pulley flanges this will stress the belt and cause a reduction in belt life 2 Loosen the motor mounting plate front bolts and rear bolts 3 Push the motor and its mounting plate towards the blower housing as close as possible to reduce the cen ter distance between fan shaft and motor shaft 4 Remove the belt by gently lifting the old belt over one of the pulleys 5 Install the new belt by gently sliding the belt over both pulley
210. ssor valves leaking Replace compressor Refrigerant overcharged Recover excess refrigerant Suction Pressure Too Low Dirty air filter Replace filter Low refrigerant charge Check for leaks repair and recharge Metering device or low side restricted Remove source of restriction Insufficient evaporator airflow Increase air quantity Check filter and replace if necessary Temperature too low in conditioned area Reset thermostat Outdoor ambient below 25 F Install low ambient kit Evaporator Fan Will Not Shut Off Time off delay not finished Wait for 30 second off delay Compressor Makes Excessive Noise Compressor rotating in wrong direction Reverse the 3 phase power leads 13 48TC Compressor Lubrication The compressor is charged with the correct amount of oil at the factory A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in damage to components The compressor is in a Puron refrigerant system and uses a polyolester POE oil This oil is extremely hygroscopic meaning it absorbs water readily POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants Avoid exposure of the oil to the atmosphere Replacing Compressor The compressor used with Puron refrigerant contains a POE oil This oil has a high affinity for moisture Do not remove the
211. state the Power 20 LED on both the sensor and the controller are on and all other LEDs are off Alarm State The smoke detector enters the alarm state when the amount of smoke particulate in the sensor s sensing chamber exceeds the alarm threshold value See Table 3 Upon entering the alarm state The sensor s Alarm LED and the controller s Alarm LED turn on The contacts on the controller s two auxiliary relays switch positions The contacts on the controller s alarm initiation relay close The controller s remote alarm LED output is activated turned on The controller s high impedance multiple fan shutdown control line is pulled to ground Trouble state The SuperDuct duct smoke detector enters the trouble state under the following conditions A sensor s cover is removed and 20 minutes pass before it is properly secured A sensor s environmental compensation limit is reached 100 dirty A wiring fault between a sensor and the controller is detected An internal sensor fault is detected upon entering the trouble state The contacts on the controller s supervisory relay switch positions See Fig 26 f a sensor trouble the sensor s Trouble LED the controller s Trouble LED turn on If 100 dirty the sensor s Dirty LED turns on and the controller s Trouble LED flashes continuously e If a wiring fault between a sensor and the controller the controller s Trouble LED turns on bu
212. structions 1 Proper eye protection such as safety glasses is recom mended during mixing and application 2 Remove all surface loaded fibers and dirt with a vacu um cleaner as described above 3 Thoroughly wet finned surfaces with clean water and a low velocity garden hose being careful not to bend fins 4 Mix Totaline environmentally sound coil cleaner in a 2 1 2 gallon garden sprayer according to the instruc tions included with the cleaner The optimum solution temperature is 100 F NOTE Do NOT USE water in excess of 130 F as the enzymatic activity will be destroyed 5 Thoroughly apply Totaline environmentally sound coil cleaner solution to all coil surfaces including finned area tube sheets and coil headers 6 Hold garden sprayer nozzle close to finned areas and apply cleaner with a vertical up and down motion Avoid spraying in horizontal pattern to minimize po tential for fin damage 7 Ensure cleaner thoroughly penetrates deep into finned areas 8 Interior and exterior finned areas must be thoroughly cleaned 9 Finned surfaces should remain wet with cleaning solution for 10 minutes 10 Ensure surfaces are not allowed to dry before rinsing Reapplying cleaner as needed to ensure 10 minute saturation is achieved 11 Thoroughly rinse all surfaces with low velocity clean water using downward rinsing motion of water spray nozzle Protect fins from damage from the spray nozzle Evaporator Coil Cleaning t
213. t 2000 PPM Range 0 5000 PPM NOTE OAQ low Reference 4mA and OAQ High Reference 20mA are used to set the linear curve of mA vs PPM 70 Economizer Economizer Exists This point tells the controller if there is an economizer installed on the unit Factory Default NO if no economizer YES if there is an economizer installed Economizer Minimum Position This defines the lowest economizer position when the indoor fan is running and the building is occupied Factory Default 20 Range 0 100 Economizer High OAT Lockout If the outdoor air temperature rises above this value economizer cooling will be disabled and dampers will return and stay at minimum position Factory Default 75 F Range 55 80 F Power Exhaust Setpt When the economizer damper position opens above this point the power exhaust operation will begin When the damper position falls 10 below the setpoint the power exhaust will shutdown Factory Default 50 Range 20 90 NOTE This point is only used when Continuous Occ Exhaust NO Continuous Occ Exhaust This point tells the controller when to run the power exhaust if equipped on the unit If set to YES the power exhaust will be on all the time when in occupied mode and will be off when in unoccupied mode If set to NO the power exhaust will be controlled by the Power Exhaust Setpoint Factory Default NO IAQ Max Differential CO Setpt If the difference between indoor an outdoo
214. t not the sensor s Trouble Power Test reset switch C07298 Fig 26 Controller Assembly NOTE All troubles are latched by the duct smoke detector The trouble condition must be cleared and then the duct smoke detector must be reset in order to restore it to the normal state Resetting Alarm and Trouble Condition Trips Manual reset is required to restore smoke detector systems to Normal operation For installations using two sensors the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition Check each sensor for Alarm or Trouble status indicated by LED Clear the condition that has generated the trip at this sensor Then reset the sensor by pressing and holding the reset button on the side for 2 seconds Verify that the sensor s Alarm and Trouble LEDs are now off At the controller clear its Alarm or Trouble state by pressing and holding the manual reset button on the front cover for 2 seconds Verify that the controller s Alarm and Trouble LEDs are now off Replace all panels Troubleshooting Controller s Trouble LED is On 1 Check the Trouble LED on each sensor connected to the controller If a sensor s Trouble LED is on de termine the cause and make the necessary repairs 2 Check the wiring between the sensor and the control ler If wiring is loose or missing repair or replace as required Controller s Trouble LED is Flashing 1 One or both of the sensors is
215. t panel located on the rear side of the unit above the evaporator return air access panel See Fig 1 To remove the filters 1 Grasp the bottom flange of the upper panel 2 Lift up and swing the bottom out until the panel dis engages and pulls out 3 Reach inside and extract the filters from the filter rack 4 Replace these filters as required with similar replace ment filters of same size To re install the access panel 1 Slide the top of the panel up under the unit top panel 2 Slide the bottom into the side channels 3 Push the bottom flange down until it contacts the top of the lower panel or economizer top IMPORTANT DO NOT OPERATE THE UNIT WITHOUT THESE FILTERS Outside Air Hood Outside air hood inlet screens are permanent aluminum mesh type filters Check these for cleanliness Remove the screens when cleaning is required Clean by washing with hot low pressure water and soft detergent and replace all screens before restarting the unit Observe the flow direction arrows on the side of each filter frame Economizer Inlet Air Screen This air screen is retained by spring clips under the top edge of the hood See Fig 3 ki 1714 4 DIVIDER OUTSIDE AIR X RN CLEANABLE ALUMINUM FILTER BAROMETRIC RELIEF FILTER CLIP C06027 Fig 3 Filter Installation To remove the filter open the spring clips Re install the filter by placing the frame in its
216. t power supply nication bus check with RTU MP disconnected from RS485 commu Possible bad driver on board Bacnet 9600 19 2K 01 to 045vdc Check RS485 bus for external before re connecting to the bus Bacnet 38 4K 06 to 09vdc Voltage shorts or grounding Bacnet 76 8K 1vdc before reconnecting to the bus Modbus 2 9600 76 8K 124vdc N2 9600 124vdc Verify devices are daisy chained and repeaters and bias Check 3rd party vendor RS485 commu terminators are correctly installed nication wiring guidelines and trouble shooting procedures MaxInfo Frames This property defines the maximum number of responses that will be sent when our controller gets the token A valid number is any positive integer The default is 10 and should be ideal for the majority of applications In cases where the controller is the target of many requests this number could be increased as high as 100 or 200 NOTE MS IP networks can be comprised of both Master and Slave nodes Valid MAC addresses for Master nodes are 0 127 and valid addresses for Slave nodes are 0 254 NOTE See RTU MP 3rd Party Integration Guide or alternatively Form 48 50H T 1T Appendix for Protocol Maps Table 26 Modbus Exception Codes that May be Returned From This Controller CODE NAME MEANING The Modbus function code used 01 Illegal Function in the query is not supported by
217. tdoor temperature is compared to an adjustable setpoint selected on the control If the outdoor air temperature is above the setpoint the EconoMi er IV will adjust the outside air dampers to minimum position If the outdoor air temperature is below the setpoint the position of the outside air dampers will be controlled to provided free cooling using outdoor air When in this mode the LED next to the free cooling setpoint potentiometer will be on The changeover temperature setpoint is controlled by the free cooling setpoint potentiometer located on the control See Fig 76 The scale on the potentiometer is A B C and D See Fig 77 for the corresponding temperature changeover values EXHAUST FAN SET POINT LED LIGHTS WHEN EXHAUST CONTACT IS MADE MINIMUM DAMPER POSITION SETTING MAXIMUM DAMPER DEMAND CONTROL VENTILATI LED ON SET POINT LIGHTS WHEN DEMAND CONTROL VENTI LATION INPUT IS ABOVE SET POINT DEMAND CONTROL VENTILATION SET POINT LED LIGHTS WHEN OUTDOOR AIR IS SUITABLE FOR FREE COOLING ENTHALPY CHANGEOVER SET POINT Co6034 Fig 76 EconoMi er IV Controller Potentiometer and LED Locations 19 X LED ON 18 D 17 16 LED OFF LED ON C 15 t S LED ON E14 LED OFF gt B 13 12 LED OFF gt LED ON 11 1 LED OFF 9 40 45 50 55 60
218. the NO contact set on the timeclock to LCTB s THERMOSTAT R terminal Connect the other side of the timeclock contact to the unit s TB1 2 terminal Remote Occupied E pe JR Time Clock TB1 PE dee E C08214 Fig 56 PremierLink Wiring Remote Occupied Refer to Form 33CS 58SI for additional information on configuring the PremierLink control for Door Switch timer function Power Exhaust output Connect the accessory Power Exhaust contactor coils s per Fig 57 Power Exhaust TB1 PL FE ran a LCTB THERMOSTAT C08120 Fig 57 PremierLink Power Exhaust Output Connection Space Relative Humidity Sensor The RH sensor is not used with 48TC models at this time CCN Communication Bus The PremierLink controller connects to the bus in a daisy chain arrangement Negative pins on each component must be connected to respective negative pins and likewise positive pins on each component must be connected to respective positive pins The controller signal pins must be wired to the signal ground pins Wiring connections for CCN must be made at the 3 pin plug 41 48TC At any baud 9600 19200 38400 baud the number of controllers is limited to 239 devices maximum Bus length may not exceed 4000 ft with no more than 60 total devices on any 1000 ft section Optically isolated RS 485 repeaters are required every 1000 ft NOTE Carrier device default is 9600 band COMMUNICATION BUS WIRE SPECIFICATIONS The CCN
219. the recommended color code Table 20 Color Code Recommendations CCN BUS WIRE CCN PLUG PIN SIGNAL TYPE COLOR NUMBER Red 1 Ground White 2 Black 3 Connect the CCN lead typically RED to the unit s TB1 12 terminal Connect the CCN ground lead typically WHT to the unit s TB1 14 terminal Connect the CCN lead typically BLK to the unit s TB1 16 terminal See Fig 58 CCN Bus TB1 PL C08276 Fig 58 PremierLink CCN Bus Connections RTU MP CONTROL SYSTEM The RTU MP controller see Fig 59 provides expanded stand alone operation of the HVAC system plus connection and control through communication with several Building Automation Systems BAS through popular third party network systems The available network systems are BACnet MP TP Modbus and Johnson J2 Communication with LonWorks is also possible by adding an accessory interface card to the RTU MP Selection of the communication protocol and baud rate are made at on board DIP switches Carrier s diagnostic display tools BACviewer6 Handheld and Virtual BACview loaded on a portable PC must be used with the RTU MP controller Connection to the RTU MP board is at the J12 access port see Fig 59 The RTU MP control is factory mounted in the 48TC unit s main control box to the left of the LCTB See Fig 60 Factory wiring is completed through harnesses connected to the LCTB Field connections for RTU MP sensors will be made at
220. then off formatted S EE 4 flashes Two or more devices on this network P then pause have the same ARC156 network address 2disshes Del secorid On Exec halted after frequent system errors p or control programs halted 5 flashes per second On Exec start up aborted Boot is running 5 flashes per second Off Firmware transfer in progress Boot is running 7 flashes per second 7 flashes per second alternating with Run LED Ten second recovery period after brown out 14 flashes per second 14 flashes per second alternating with Run LED Brownout On On Failure Try the following solutions e Turn the RTU MP off then on e Format the RTU MP e Download memory to the RTU MP e Replace the RTU MP 50 Table 23 Troubleshooting Alarms BACnet ACTION TAKEN BY RESET POINT NAME OBJECT CONTROL METHOD PROBABLE CAUSE NAME Alarm Generated Safety Chain Alarm safety chain Immediate Automatic Over load Indoor Fan or Electric Heater overheat Shutdown Alarm Generated a Fire Shutdown Alarm fire alarm Immediate Automatic a Se by smeko detector or configura Shutdown ion incorrec Space Temp Sensor Alarm Generated Faulty shorted or open thermistor caused by Failure spt_alarm linmediat Automatie wiring error or loose connection Shutdown H Alarm Generated Faulty shorted or open thermistor caused by S
221. tify the proper authorities before performing the test Controller Alarm Test Procedure 1 Press the controller s test reset switch for seven seconds 2 Verify that the controller s Alarm LED turns on 3 Reset the sensor by pressing the test reset switch for two seconds 4 Verify that the controller s Alarm LED turns off Dirty Controller Test The dirty controller test checks the controller s ability to initiate a dirty sensor test and indicate its results A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern Pressing the controller s test reset switch for longer than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses Dirty Controller Test Procedure 1 Press the controller s test reset switch for two seconds 2 Verify that the controller s Trouble LED flashes Dirty Sensor Test The dirty sensor test provides an indication of the sensor s ability to compensate for gradual environmental changes A sensor that can no longer compensate for environmental changes is considered 10046 dirty and requires cleaning or replacing You must use a field provided SD MAG test magnet to initiate a sensor dirty test The sensor s Dirty LED indicates the results of the dirty test as shown in Table 2 A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern
222. tion does not 7 Flashes Rollout Switch Fault exceed maximum value See Fig 32 8 Flashes Internal Control Fault 9 Flashes Software Lockout LEGEND LED Light Emitting Diode A 3 second pause exists between LED error code flashes If more than one error code exists all applicable codes will be displayed in numerical sequence T Indicates a code that is not an error The unit will continue to operate when this code is displayed 27 A COVER SCREW M ze P DENT CE Sy PLASTIC A ADJUST SCREW REGULATOR SPRING PROPANE WHITE NATURAL SILVER REGUL AOR COVER SCREW ag PLASTIC ADJUST SCREW ONOFF SWITCH gt zg REGULATOR SPRING Propane White Natum Siver 1 2 NPT INLET HIGH STAGE GAS C SCH PRES SURE REGULATOR ADJUSTMENT GAS PRESSURE REGULATOR INLET LOW STAGE INLET di ADJUSTMENT PRESSURE TAP GAS PRESSURE PRESSURE TAP REGULATOR ADJUSTMENT MANIFOLD MANIFOLD PRESSURE TAP N 3 PRESSURE TAP 1 2 NPT TOR d 1 2 NPT OUTLET l Single Stage 2 Stage to C08210 F Fig 37 Gas Valves Red LED Status no n o DN st DN Q N c GC N a N H Se e E D7 X Lg XR L ten XC X D 1 3 Hi n D Llc R3 E O D5 R2 CO ms CH 1068 83 127A HSCI UI Ki D D11 i K3 Ril R14 R17 ka n R6 R3 R22 R37 R39 4 gt JW C25 R43 CD JW2 D12 Q3 d D13 Co TI E B is Z a LI S CM L1 BM Hou s
223. tion will be closed or Minimum Position as determined by occupancy mode and fan signal When free cooling is available as determined by the appropriate changeover command dry bulb outdoor enthalpy differential dry bulb or differential enthalpy a call for cooling Y1 closes at the thermostat will cause the economizer control to modulate the dampers open and closed to maintain the unit supply air temperature at 50 to 55 F Compressor will not run 71 48TC During free cooling operation a supply air temperature SAT above 50 F will cause the dampers to modulate between Minimum Position setpoint and 100 open With SAT from 50 F to 45 F the dampers will maintain at the Minimum Position setting With SAT below 45 F the outside air dampers will be closed When SAT rises to 48 F the dampers will re open to Minimum Position setting Should 100 outside air not be capable of satisfying the space temperature space temperature will rise until Y2 is closed The economizer control will call for compressor operation Dampers will modulate to maintain SAT at 50 to 55 F concurrent with compressor operation The Low Ambient Lockout Thermostat will block compressor operation with economizer operation below 42 F outside air temperature When space temperature demand is satisfied thermostat Y1 opens the dampers will return to Minimum Damper position if indoor fan is running or fully closed if fan is off If accessory power exh
224. troller will generate a Linkage Communication Failure alarm if a failure occurs for 5 consecutive minutes once a Linkage has previously been established It will then revert back to its own SPT setpoints and occupancy schedule for control For this reason Carrier strongly recommends that an SPT be installed in the space on open plenum systems or in the return air duct of ducted return air systems to provide continued backup operation When Linkage communication is restored the controller will generate a return to normal For more information on how the PremierLink controller is used in conjunction with the Carrier 3V control system contact your CCN controls representative IMPORTANT The PremierLink controller should not be used as a linked air source in a ComfortID VAV system The ComfortID VAV system will NOT function correctly when applied with a PremierLink controller as the air source resulting in poor comfort control and possible equipment malfunction NOTE The PremierLink controller can be used as an air source in a 3V Pressure Independent PI System a 3V Linkage Coordinator with ComfortiD PI Zone Controllers but it should not be used as an air source with ComfortID controllers unless a 3V zone controller is used as the Linkage Coordinator Contact your Carrier CCN controls representative for assistance Demand Limit If the demand limit option is enabled the control will receive and accept Redline Alert and Load
225. units with scroll compressors it is important to be certain compressor is rotating in the proper 66 direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gauges to suction and discharge pres sure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pressure should rise as is normal on any start up If the suction pressure does not drop and the discharge pressure does not rise to normal levels 4 Note that the evaporator fan is probably also rotating in the wrong direction 5 Turn off power to the unit and install lockout tag 6 Reverse any two of the unit power leads 7 Re energize to the compressor Check pressures The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direction the unit will make an elevated level of noise and will not provide cooling Cooling Set space thermostat to OFF position To start unit turn on main power supply Set system selector switch at COOL position and fan switch at AUTO position Adjust thermostat to a setting below room temperature Compressor starts on closure of contactor Check unit charge Refer to Refrigerant Charge section Reset thermostat at a position above room temperature Compressor will shut off Evaporator fan will shut off after a 30 second delay To shut off unit set system se
226. ure the Dirty Sensor Test Operation 1 Hold the test magnet where indicated on the side of the sensor housing until the sensor s Alarm LED turns on and its Dirty LED flashes twice approximately 60 seconds 2 Reset the sensor by removing the test magnet then holding it against the sensor housing again until the sensors Alarm LED turns off approximately 2 seconds Remote Station Test The remote station alarm test checks a test reset station s ability to initiate and indicate an alarm state A CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern This test places the duct detector into the alarm state Unless part of the test disconnect all auxiliary equipment from the controller before performing the test If the duct detector is connected to a fire alarm system notify the authorities before performing the test proper 19 48TC SD TRK4 Remote Alarm Test Procedure 1 Turn the key switch to the RESET TEST position for seven seconds 2 Verify that the test reset station s Alarm LED turns on 3 Reset the sensor by turning the key switch to the RESET TEST position for two seconds 4 Verify that the test reset station s Alarm LED turns off Remote Test Reset Station Dirty Sensor Test The test reset station dirty sensor test checks the test reset station s ability to initiate a sensor dirty test and indicate the results It must be wired to th
227. us allowing more or less outdoor air into the space depending on the relationship of the IAOI to the IAOS The IAQ algorithm runs every 30 seconds and calculates IAQ minimum position value using a PID loop on the IAOI deviation from the IAOS The IAO minimum position is then compared against the user configured minimum position MDP and the greatest value becomes the final minimum damper position IOMP If the calculated IAO Minimum Position is greater than the IAQ maximum damper position IAQMAXP decision in the SERVICE configuration table then it will be clamped to IAOMAXP value If IAQ is configured for low priority the positioning of the economizer damper can be overridden by comfort requirements If the SAT SASP 8 F and both stages of heat are on for more then 4 minutes or the SAT SASP 5 F and both stages of cooling on for more then 4 minutes then the IAQ minimum damper position will become 0 and the IOMP MDP IAQ mode will resume when the SAT gt SASP 8 F in heating or the SAT SASP 5 F in cooling If the PremierLink controller is configured for 1 stage of heat and cool or is only using a single stage thermostat input this function will not work as it requires the both Y1 and Y2 or W1 and W2 inputs to be active In this application it is recommended that the user configure IAQ priority for high If IAQ is configured for high priority and the OAT 55 F and the SAT lt SPT 10 F the algorithm will enabl
228. used for field installation Refer to the input configuration and accessory sections for more detail NOTE Refer to Form 48 50H T 2T for complete configuration of RTU MP operating sequences and troubleshooting information Refer to RTU MP 3rd Party Integration Guide for details on configuration and troubleshooting of connected networks Have a copy of these manuals available at unit start up The RTU MP controller requires the use of a Carrier space sensor A standard thermostat cannot be used with the RTU MP system Supply Air Temperature SAT Sensor On FIOP equipped 48TC unit the unit is supplied with a supply air temperature SAT sensor 33ZCSENSAT This sensor is a tubular probe type approx 6 inches 12 7 mm in length It is a nominal 10 k ohm thermistor See Table 15 for temperature resistance characteristic The SAT is factory wired The SAT probe is wire tied to the supply air opening on the horizontal opening end in its shipping position Remove the sensor for installation Re position the sensor in the flange of the supply air opening or in the supply air duct as required by local codes Drill or punch a 1 2 in hole in the flange or duct Use two field supplied self drilling screws to secure the sensor probe in a horizontal orientation See Fig 41 Outdoor Air Temperature OAT Sensor The OAT is factory mounted in the EconoMi er 2 FIOP or accessory It is a nominal 10k ohm thermistor attached to an ey
229. ut if a screen is left idle See Form 48 50H T 2T Appendix A for navigation and screen content Virtual BACview Virtual BACview is a freeware computer program that functions as the BACview Handheld The USB Link interface USB L is required to connect a computer to the RTU MP board The link cable connects a USB port to the J12 local access port This program functions and operates identical to the handheld RTU MP Troubleshooting Communication LEDs The LEDs indicate if the controller is speaking to the devices on the network The LEDs should reflect communication traffic based on the baud rate set The higher the baud rate the more solid the LEDs will appear sa ya HERE BACview Local Access Cable C07170 Fig 68 BACview Handheld Connections 49 48TC Table 22 LEDs The LEDS on the RTU MP show the status of certain functions If this LED is on Status is Power The RTU MP has power Rx The RTU MP is receiving data from the network segment Tx The RTU MP is transmitting data over the network segment DO The digital output is active The Run and Error LEDs indicate control module and network status If Run LED shows And Error LED shows Status is 2 flashes per second Off Normal flashes Wer Second 2 flashes Five minute auto restart delay after sys H alternating with Run LED tem error SilasshostigP second 3 flashes Control module has just been P
230. w its local schedule or broadcast its local schedule as a global schedule or following a global schedule broadcast by another device If PremierLink controller is in the occupied mode and ASHRAE 90 1 Supply Fan is configured for No and there is a heat or cool demand fan auto mode 73 48TC e If the PremierLink controller is in the occupied mode and ASHRAE 90 1 Supply Fan is configured for Yes when Linkage is active and the Linkage Coordinator device is sending an occupied mode flag When Temperature Compensated Start is active When Free Cool is active When Pre Occupancy Purge is active Whenever there is a demand for cooling or heating in the unoccupied mode Whenever the Remote Contact input is configured for Remote Contact RC DC 1 in SERVICE table and it is closed or the point is forced Closed via communications in the STATUSO1 points display table remote contact closed occupied remote contact open unoccupied Whenever the H3 EX RV point is configured for Dehumidification AUXOUT 5 in CONFIG table and it is in the unoccupied mode and the indoor RH exceeds the unoccupied humidity setpoint Whenever the Supply Fan Relay point is forced On in the STATUSOI points display table The fan will also continue to run as long as compressors are on when transitioning from occupied to unoccupied with the exception of Fire Shutdown mode If the Fire Shutdown input point is closed or forced in the STATUSO1 points
231. w the setpoint by a fixed hysteresis of 10 Heating The heating outputs are controlled by the Heating Control PID Loop and Heating Stages Capacity algorithm They will be used to calculate the desired number of stages needed to satisfy the space by comparing the SPT to the Occupied Heat Setpoint plus the T56 slider offset when occupied and the Unoccupied Heat Setpoint plus the T56 slider offset if unoccupied The following conditions must be true in order for this algorithm to run Indoor Fan has been ON for at least 30 seconds Cool mode is not active and the time guard between modes equals zero f occupied and SPT occupied heat setpoint plus T56 slider offset e SPT reading is available If it is unoccupied and the SPT lt unoccupied heat setpoint plus T56 slider offset The indoor fan will be turned on by the staging algorithm OAT lt High OAT lockout temperature If all of the above conditions are met the heating outputs will be energized as required otherwise they will be de energized If the SAT begins to exceed the high supply air setpoint a ramping function will cause the Heat Stages Capacity algorithm to decrease the number of stages until the SAT has dropped below the setpoint There is a fixed one minute minimum on time and a one minute off time for each heat output Heat staging has a 3 minute stage up and 30 second stage down delay Indoor Air Qualit If the optional indoor air quality se
232. water hose or other suitable equipment to flush down between the 2 coil sections to remove dirt and debris Clean the outer surfaces with a stiff brush in the normal manner 7 Secure inner and outer coil rows together with a field supplied fastener 8 Reposition the outer coil section and remove the coil corner post from between the top panel and center post Reinstall the coil corner post and replace all screws Totaline Environmentally Sound Coil Cleaner Application Equipment e 2 1 2 gallon garden sprayer Water rinse with low velocity spray nozzle A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in accelerated corrosion of unit parts Harsh chemicals household bleach or acid or basic cleaners should not be used to clean outdoor or indoor coils of any kind These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion at the fin tube interface where dissimilar materials are in contact If there is dirt below the surface of the coil use the Totaline environmentally sound coil cleaner A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in reduced unit performance or unit shutdown High velocity water from a pressure washer garden hose or compressed air should never be used to clean a coil The force of the water or air jet will bend the fin edges and increase airside pressure drop Totaline Environmentally Sound Coil Cleaner Application In
233. y connection to the RTU MP is through plug J19 Refer to the RTU MP 3rd Party Integration Guide for more detailed information on protocols 3rd party wiring and networking NOTE Power must be cycled after changing the SW1 3 switch settings SW3 Protocol Selection PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1 BACnet MS TP Master Unused OFF OFF OFF ON OFF Select Baud Select Baud Modbus Slave Unused OFF OFF ON ON OFF Select Baud Select Baud N2 Slave Unused OFF OFF OFF ON ON OFF OFF LonWorks Unused ON ON OFF ON OFF OFF OFF NOTE Comm Set fo DS Dip Switch open a to an BACnet MS TP SW3 example shown Unused rine TIT Baud Rate Selections BAUD RATE DS2 DS1 9600 OFF OFF 19 200 ON OFF 38 400 OFF ON 76 800 ON ON OFF 3229221 H ON Protocol Selector DIP Switches C07166 Fig 67 RTU MP SW3 Dip Switch Settings 48 BACnet MS TP BACnet Master Slave Token Passing MS TP is used for communicating BACnet over a sub network of BACnet only controllers This is the default Carrier communications protocol Each RTU MP module acts as an MS TP Master The speed of an MS TP network can range from 9600 to 76 8K baud Physical Addresses can be set from 01 to 99 Modbus The RTU MP module can speak the Modicon Modbus RTU Protocol as described in the Modicon Modbus Protocol Reference Guide PI MBUS 300 Rev J The speed of a Modbus

Carrier 48TCA04---A12 User's Manual

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