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Installation, Start-Up and Service Instructions - HVAC-Talk

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1. Fig 18 Typical PremierLink Controls Wiring 21 BLK RED s Nd TB 2 HK50AA039 e PNK PNK BRN ez 7 7 BLU 9 gl o ORNENK 19 PremierLink OAT 2 BRN a BRN 11 11 Space Set n exu 5 10 10 BLU 4 BRN ve GRN 51 YEL BLU 5 5 Indoor Air 3 Quality Sensor 6 BRN 9 3 3 WHT A 3 BLK BLU PNK 4 4 Outdoor Air J2 J9 7 J8 Quality Sensor GRA J1 5 0 20 Relays RED lt Power Exhaust Energy Recycler 8 ORN aRa TESH EWR sel f 7 1 1 999 ee 977777 777779 777777 GRA o TB 3 PNK BAN WHT GRA PNK YEL ORN e ORN 9 9 RMTOCC 1 GRN IGRA BLK RED TB 1 RED 2 YEL 1 E ue rsp 9 BLU 2 srs 4 WHT 3 DY2 ORN T 5 PNK 4 on 6 RED 5 ywe PNK OUTDOOR AIR 7 1 WHT 6 war 2 8 BIK BRN 7 4 20 8 X o epa COMMS
2. EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required Pe t MOOR S toan 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other roms require field supplied drive 46 Table 26 Fan Performance 48TF TM014 Vertical Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg 55 I0 0 0 LS 00 CO 2 AN EXTERNAL STATIC PRESSURE wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required Bip D MORE toan 2 Maximum continuous bhp is 5 25 3 See page 32 for General Fan Performance Notes Motor drive range 830 to 1130 rpm All other rpms require field supplied drive 47 Table 27 Fan Performance 48 008 Horizontal Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required Bap D MONET torkan 2 Maximu
3. 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 outdoor temperature is compared to an adjustable set point selected on the control If the outdoor air temperature is above the set point the EconoMi er IV will adjust the outdoor air dampers to minimum position If the outdoor air temperature is below the set point the position of the outdoor air dampers will be controlled to provide free cooling using outdoor air When in this mode the LED next to the free cooling set point potenti ometer will be on The changeover temperature set point is controlled by the free cooling set point potentiometer located on the control See Fig 34 The scale on the potentiometer is A B C and D See Fig 35 for the corresponding temperature changeover values Differential Dry Bulb Control For differential dry bulb control the standard outdoor dry bulb sensor is used in conjunc tion with an additional accessory dry bulb sensor part number CRTEMPSNO002A00 The accessory sensor must be mounted in the return airstream See Fig 36 Wiring is provided in the IV wiring harness See Fig 28 In this mode of operation the outdoor air temperature is compared to the return air temperature and the lower tempera ture air stream is used for cooling Whe
4. HH57AC078 ENTHALPY SENSOR USED WITH ENTHALPY CONTROL FOR DIFFERENTIAL ENTHALPY OPERATION 7400A1004 m MOUNTING PLATE Fig 20 Differential Enthalpy Control Sensor and Mounting Plate 33AMKITENTOOO IV CONTROLLER WIRING OUTSIDE AIR HARNESS TEMPERATURE SENSOR LOW AMBIENT SENSOR ACTUATOR b Fig 21 EconoMi er IV Component Locations OUTDOOR AIR HOOD HOOD SHIPPING BRACKET EAR DRIVEN BAROMETRIC DAMPER RELIEF DAMPER Fig 22 EconoMi er2 Component Locations FILTER ACCESS PANEL D INDOOR COIL ACCESS PANEL Fig 23 Typical Access Panel Locations 2 The box with the economizer hood components is shipped in the compartment behind the economizer The EconoMi er IV controller is mounted on top of the EconoMi er IV in the position shown in Fig 21 The optional 2 with 4 to 20 mA actuator signal control does not include the EconoMi er IV controller To remove the component box from its shipping position remove the screw holding the hood box bracket to the top of the economizer Slide the hood box out of the unit See Fig 24 IMPORTANT If the power exhaust accessory is to b
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6. W3H10 ONY STIYM 31382N09 80 0078 ONY LINN N33MI3H 8 E E eS NI SE 3015 1 0138 7 a 7103109 532 806 ONY LINN N33M138 3 toce T NI 2 3015 108109 SLINN 33 138 79 01193380 8 8 0 1 ONINAdO 7138 T H3SN30NOO H3dOHd 3unssv 01 S3HONI O9 1102 01140 S 2 312 331V389 torii 1 9 1139 3015 8 10 JHL S3HONI Cl 73015 INO 2 1 5 0 7 A 9E NIV 934044 HOS 1102 79 To SIMINI 0 84N 0 334309 NISN LON S3OVAHNS 31811508500 01 IVY 358 30 HOLLOA 338140093 Hn ONISN LON N3HMD 5 4 5 31811508402 OL LINN 30 WOLLOB 74 7 N 7 2 1 9 1 N 01231430 JOUVHOSIG 3014 3055309 NISN N3HM S3HONI 8l SIH NI OSEE 9 COO ALIS TONG 91545002 5 4 5 31811508402 3015 3879 LINN 33 138 79 lt a CIE VA3Ud B S 1 SV9 Idd v E 00 AWW 01121051 HO 53002 70207 WAWINIW 75 SOME RA 46002 7 7105 U35N30NO2 S39NY14 3H1 01 OSHOWLIY 38 b bp be C00 h t 8 834305 15 YAMOd 5 TIV ONY SONINSdO 3OUYHOSIQ VINOZIUOH p 8718 1 1 xuJMOd 60071000 061 AL 84 1 0 2
7. CONTROL CONTROL POINT 2 x gt 52 ra 9 8 8 77 Sp 9 28 Fig 38 EconoMi er IV Control Exhaust Set Point Adjustment exhaust set point will determine when the exhaust fan runs based on damper position if accessory power exhaust is installed The set point is modi fied with the Exhaust Fan Set Point EXH SET potentiometer See Fig 34 The set point 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 potentiometer on EconoMi er IV controller See Fig 34 The minimum damper position maintains the mini mum airflow into the building during the occupied period When using demand ventilation the minimum damper po sition represents the minimum ventilation position for VOC volatile organic compound ventilation requirements The maximum demand ventilation position is used for fully occu pied ventilation When demand ventilation control is not being used the minimum position potentiometer should be used to set the oc cupied ventilation position The maximum demand ventilation position should be turne
8. A 093 7184 JALYSSIWONODS LINN 7015 3015 1 914 JLYSNJQANO9 70153 39uvHOoSIQ 431734 918134038 770 3015100 BS MIV 1133 WLNOZ SNIN3dO 2 13905 IVNLNOZT80H 0 Adds 710 800 187 suoisueui eseg g 4 1 0 TANVd 30 15100 539Vld 8 281 0 51015 912 B 0 onul 2303 TANVd 553599 Wu3MO l8 8 3010 YOOONI t VIG J 0 TANVd SS392V HdNung8 7 805538 403 7X08 1091309 NOILV2O1 123 02510 1 21815314 x 970 57 0 3015 1 31 59 69511 291 6 6 0 28 4 5 81 91 6 v 0 LINN 40 1102 35 30 09 3014 03179915 AHOlOVJ 5831114 318 504510 y 26 55322 831714 OZE 61 1 cle rou 100 0 3 X1ddnS N3MOd 0157 VIO z s pee 8 5 0 1 91 5 2 8 0 0 1221 eye STO 1 1SNYHX3 M 1011 S81 9 2 1210 8189 yLO ZLOAWL OWL 8b 33 140 055 7 0 91 64 2 0 011 599 LdN 4 CWOIIUSA p v pE 7 800018 NNOD SV9
9. IV operation there must be a thermostat call for the fan G This will move the damper to its minimum position during the occupied mode Above 50 F supply air temperature the dampers will modu late from 100 open to the minimum open position From 50 F to 45 F supply air temperature the dampers will maintain 65 at the minimum open position Below 45 F the dampers will be completely shut As the supply air temperature rises the dampers will come back open to the minimum open position once the supply air temperature rises to 48 F If optional power exhaust is installed as the outdoor air damper opens and closes the power exhaust fans will be ener gized and deenergized If field installed accessory CO sensors are connected to the EconoMi er IV control a demand controlled ventilation strate gy will begin to operate As the CO level in the zone increases above the CO set point the minimum position of the damper will be increased proportionally As the CO level decreases because of the increase in fresh air the outdoor air damper will be proportionally closed Damper position will follow the high er demand condition from DCV mode or free cooling mode Damper movement from full closed to full open or vice versa will take between 11 2 and 2 2 minutes If free cooling can be used as determined from the appropri ate changeover command switch dry bulb enthalpy curve differential dry bulb or differential entha
10. MORE 2 Maximum continuous bhp is 5 25 3 See page 32 for General Fan Performance Notes Motor drive range 830 to 1130 rpm All other rpms require field supplied drive 62 PRE START UP WARNING Failure to observe the following warnings could result in serious personal injury 1 Follow recognized safety practices and wear protective goggles when checking or the servicing refrigerant system Do not operate the compressor or provide any electric power to the unit unless the compressor terminal cover is in place and secured Do not remove the compressor terminal cover until all electrical sources are disconnected Relieve all pressure from the system before touching or disturbing anything inside the compressor terminal box if refrigerant leak is suspected around the compressor terminals Never attempt to repair a soldered connection while the refrigerant system is under pressure Do not use torch to remove any component The sys tem contains oil and refrigerant under pressure To remove a component wear protective goggles and pro ceed as follows Shut off gas and then electrical power to the unit Install lockout tag Relieve all pressure from the system using both high pressure and low pressure ports Cut the component connection tubing with a tubing cutter and remove the component from the unit Carefully unsweat the remaining tubing stubs when necessary Oil can ignite when exposed to tor
11. POSITIONING Maintain clearance around and above unit to provide minimum distance from combustible materials proper airflow and service access See Fig 7A and 7B Notes Do not install unit in an indoor location Do not locate unit air inlets near exhaust vents or other sources of contaminated air Be sure that unit is installed so that snow will not block the combustion intake or flue outlet Unit may be installed directly on wood flooring or on Class A B or C roof covering material when roof curb is used Although unit is weatherproof guard against water from higher level runoff and overhangs Position unit on roof curb so that the following clearances are maintained 1 4 in clearance between roof curb and base rails on each side and duct end of unit 35 16 clearance between roof curb and condenser section end See Fig 2 section C C Locate mechanical draft system flue assembly at least 48 in from an adjacent building or combustible material When unit is located adjacent to public walkways flue assembly must be at least 7 ft above grade MAXIMUM ALLOWABLE DIFFERENCE in AB AC 05 10 Fig 3 Unit Leveling Tolerances Flue vent discharge must have a minimum horizontal clear ance of 48 in from electric and gas meters gas regulators and gas relief equipment Flue gas can deteriorate building materials Orient unit so that flue gas will not affect building materials Adequate combustion air spa
12. 5 30 4 10 16 9 SUCTION LINE TEMPERATURE 1 48 009 Fig 54 Cooling Charging Chart 71 CIRCUIT 1 PSIG A e N PRESSURE o A ut SUCTION LINE o N N a gt a a gt 5 in 414 E z n 40 50 SUCTION LINE TEMPERATURE 1 4 10 1 SUCTION LINE TEMPERATURE SUCTION LINE PRESSURE KILOPASCALS N N CIRCUIT 2 0 OUTDOOR PRESSURE PSIG o N SUCTION LINE 30 40 50 50 70 SUCTION LINE TEMPERATURE 1 4 10 16 21 SUCTION LINE TEMPERATURE C Fig 55 Cooling Charging Chart 48TM012 RE PSIG 5 50 5 5 SUCTION LINE PRESSURE KILOPASCALS PRESSU EN EENE 30 40 0 50 SUCTION LINE TEMPERATURE F 1 4 10 16 SUCTION LINE TEMPERATURE C SUCTION LINE PRESSURE KILOPASCALS SUCTION LINE PRESSURE PSIG 30 40 0 60 0 80 SUCTION LINE TEMPERATURE F 1 4 10 16 21 SUCTION LINE TEMPERATURE C Fig 56 Cooling Charging Chart 48TM014 72 Flue Gas Passageways inspect the flue collec tor box and upper areas of the heat exchanger 1 Remove the combustion blower wheel and motor assem bly according to directions in Combustion Air Blower section below 2 Remove the flue cover t
13. AIRFLOW Cfm LEGEND NOTES A 1 Boldface indicates field supplied drive is required P in VAGUE WARS Mook S oan 2 Maximum continuous bhp is 2 90 3 See page 32 for General Fan Performance Notes Motor drive range 835 to 1085 rpm All other rpms require field supplied drive 44 Table 24 Fan Performance 48TF TM012 Vertical Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg 1 86 1 98 2 11 2 24 2 38 2 52 2 67 2 82 2 99 3 15 3 33 AIRFLOW Cfm 1 68 5 1 78 1 88 1 99 5 2 11 2 22 2 35 2 47 2 60 2 82 2 74 2 96 2 88 3 11 3 03 3 26 3 19 3 42 3 35 3 59 3 51 3 76 3 68 3 94 3 86 4 12 4 04 4 31 4 23 4 50 4 43 4 70 LEGEND Bhp Brake Horsepower Input to Fan Watts Input Watts to Motor Motor drive range 830 to 1130 rpm All other rpms require field supplied drive 45 Watts 1249 1328 1410 1496 1586 1680 1778 1881 1987 2099 2214 2334 2460 2589 2725 2865 3010 3161 3317 3479 3647 Watts 1958 2062 2169 2280 2395 2514 2637 2764 2895 3031 3171 3316 3466 3621 3781 3945 4116 4291 NOTES 1 Boldface indicates field supplied drive is required 2 Maximum continuous bhp is 5 25 3 See page 32 for General Fan Performance Notes Table 25 Fan Performance 48TF TM014 Vertical Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg
14. 2 0 iu LNOYS 8 1221 310H 1804 VIG b e 12 E SSE 8 2 v a 1f00 320N3 _ATddNS u3MOd v9 10 2 1 amp 8 BEL Z A INO 72413 LUVH2 SIOH AlddNS YSMOd 071913 SE vid 8 1 529 1 2 31 4 5 0 3409 01108 335 53715 NOILOSNNOO Ive 36 8 3HI 30 HOLIO8 OU dn bee UIS all Lem 6 dI 8 v10 CNY ZIO 804 851 11 1 600 ONY PU 2 800 303 28 2 1 SI 30 43139 7 211 3 38178 zn 7 A ASV NO 135 31 L lt Z JVIYILYW 02 3008 2 NO 8 v 55 70 HO GOOM 0991 A 0 SHOOTS 37811508402 NO 0311 15 38 AVW SLINA 724 11 30NYuv312 3015 LH9IM Topl 34915 ON 53810938 JINJA 378VAOW3H V 9 ONY 8 310N 335 1 31 05 SION NI 031 15 SY 3015 NOLIShBHOO ONY 7102 Z gly i NI 336430409 JHL 3ONVHY3TO 3Hl 30 NOILd3OX3 3Hl 79 591 9NINJdO 0350 SI NIYHO 3IVSN3ONOO 31vNH3L Y 57141 91 6 2 0 311543009 17V 29713 N3HM S3HONI O ONS NunlJH ONY A TddnS 1 071 u SUEL 2 24 3 DSN 834 NI cv 3016 7108109 S3Ov uns 0300039 USHLO ONY STIWM 31389 09 UO 39018 ONY LINN N33Ml3H 6 Exc Usd NI 9 73015 f uiv 8 lt XO8 108109
15. 3 4 L18 NPT CRBTMPWROO4AO1 3 4 19 1 t 1 1 4 31 71 1 ROOF CURB A UNIT SIZE ACCESSORY E C CRRFCURBO03A01 1 2 48 008 014 ag 3561 SaaS 27 07 CRRFCURBOO4A01 2576 s z4 NOTES 1 ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED i 2 INSULATED PANELS 1 THK POLYURETHANE FOAM 1 3 4 DENSITY 3 DIMENSIONS IN ARE IN MILLIMETERS 4 ROOFCURB 16 GAGE STEEL 5 ATTACH DUCTWORK TO CURB FLANGES OF DUCT REST ON CURB 6 SERVICE CLEARANCE 4 ON EACH SIDE 7 DIRECTION OF AIR FLOW 8 CONNECTOR PACKAGES CRBTMPWROO1AO1 AND 2A01 ARE FOR THRU THE CURB GAS TYPE PACKAGES CRBTMPWROO3AO AND 4A01 UNIT ARE FOR THE THRU THE BOTTOM TYPE GAS CONNECTIONS 0 3 SUPPLIED 8 pin uis TYPICAL 4 SIDES DUCT __ FIELD SUPPLIED l _ COUNTER FLASHING FIELD SUPPLIED l ROOFING FELT 0 3 FIELD SUPPLIED 76 CANT STRIP _ jt j RETURN STRI d P FIELD SUPPLIED ass SIUE ROOFING MATERIAL i FIELD SUPPLIED SUPPLY AIR OPENING ror E SECTION C C RIGID INSULATION OPENING FOR BASEPAN 5 s FIELD SUPPLIED ENTRY SERVICE CSEE NOTE 8 5 OIL a 2 8 15 16 17 2 7 8 0 0 7 16 a SCALE 1 4 BOLT HEADS 1785 1371 7 11 4 ae BOLT HEADS 761 07 0 7
16. S3OVJUNS LINN N33M138 79 em Yad NI Cy ROIS OMINOO SLINA NaaHLa 79 334034 Ol S3HONI OS QV3HH3A0 P i 1140 51 32NYUY319 931349 9NILI39 3015 JHL YSH1O JHL S3HONI 21 73016 3NO 1 5 0 gt e a S3HONI MOTI H3dOUd 804 1109 YSSNSGNOD 79 S3HONI AYN ian 1 1 gt 2 ONISN LON 5 4 5 31811508402 01 TIIVA 3578 40 01108 44032018 a 5 5 MATA NL 33 140 093 4 UND ONISN LON 532 805 37911508409 OL LINN JO 01108 74 S95 1 01 1 301937330 9 2510 3074 8055309 9 150 N3HM 8l S3HONI 8 16011 639vJuns 37811608402 3015 3014 LINN N33M138 79 73715 3HIM 9NION3d30 H3MOd 804 91 91 8 OHVA3Ud v l YO v E H3H1I3 103135 N 01121051 HO 53002 12070 WNWINIW 75 7 1102 H35N30N02 1v1 8 S L SV9 193 7 k00 8 15 Y3MOd OL O3HOVIlV 38 L SV9 193 2 1 00 1061 83 1 0 093 J NYd 55322 HN3ZIWONOO3 H3111 5 YYOMLING TIY ONY SONIN3dO 3ONYHOSIQ WVLNOZIYOH P kb 200 91
17. Table 20 Electrical Data 48TM Units With Convenience Outlet VOLTAGE COMPR OFM COMBUSTION DISCONNECT ML Rance quausTion Power surety Pon Lm Oty Hp FFA FUA FLA MOCP LRA Std 44 9 44 9 50 50 48 48 234 234 208 230 3 60 187 254 1 4 44 9 44 9 50 50 48 48 234 234 High 10 6 49 7 49 7 60 60 53 53 277 277 110 Tons 460 3 60 Alt 414 508 0 7 3 110 EE 132 99 575 3 60 518 632 0 7 3 166 20 18 99 High 116 49 149 1 60 60 52 52 277 277 20820390 2 7 254 17 37 12 JA 1 4 151 480560 ERE e 175 E 575 3 60 518 632 5 5 50 0 0 7 202 25 21 128 Std 494 494 60 60 52 52 302 302 208 230 3 60 187 254 125 0 1 4 1 4 51 9 51 9 60 60 54 54 321 321 15 0 58 6 58 6 70 7011 63 63 369 369 151 001205 460 3 60 Mm 414 508 o7 3 190 184 121 575 3 60 mm 518 632 07 3 152 148 EH 61 0 61 0 70 701 65 65 364 364 208 2 187 254 1 14 25s 25 55 287 30 1 121 2 Tons 313 35 33 215 a 279 120 160 LEGEND Determine percent of voltage imbalance FLA Full Load Amps Voltage Imbal 21 prom HACR Heating Air Conditioning and Refrigeration 457 Indoor Evaporator Fan Motor 1 53 korkea This amount of phase imbalance is s
18. 1 0 20 0 25 0 30 0 35 STATIC PRESSURE wg Fig 32 Return Air Pressure Drop Supply Temperature SAT Sensor The supply air temperature sensor is a 3 K thermistor located at the inlet of the indoor fan See Fig 33 This sensor is factory installed The op erating range of temperature measurement is 0 to 158 See Table 4 for sensor temperature resistance values 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 Table 4 Supply Air Sensor Temperature Resistance Values TEMPERATURE F RESISTANCE ohms 58 200 250 40 100 680 22 53 010 4 29 091 14 16 590 32 9 795 50 5 970 68 3 747 77 3 000 86 2 416 104 1 597 122 1 080 140 746 158 525 176 376 185 321 194 274 212 203 230 153 248 116 257 102 266 89 284 70 302 55 SUPPLY AIR TEMPERATURE SENSOR MOUNTING LOCATION SUPPLY AIR TEMPERATURE SENSOR Fig 33 Supply Air Sensor Location Outdoor Air Lockout Sensor The Economi er IV is equipped with an ambient temperature lockout switch located in the outdoor air stream which is used to lockout the compres sors below a 42 F ambient temperature See Fig 21 ECONOMISER 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 Pre
19. 24 BLACK 500 2 RESISTOR U VIOLET PINK RED 10 11 YELLOW 9 WHITE 5 lt 1 RUN MN ame 1 3 e 50HJ540573 ACTUATOR 045 o gt Ol _____ ASSEMBLY OPTIONAL 2 SENSOR 4 20 mA OUTPUT DIRECT DRIVE ACTUATOR NOTES 1 Switch on actuator must be in run position for economizer to operate 12 ECONOMIS ER2 PLUG 2 PremierLink control requires that the standard 50HJ540569 outside air sensor be replaced by either the CROASENRO01A00 dry bulb sensor or HH57A077 enthalpy sensor 3 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500 ohm resistor Fig 29 EconoMi er2 with 4 to 20 mA Control Wiring 25001 2000 1500 1000 500 0 05 0 15 0 25 STATIC PRESSURE in wg FLOW IN CUBIC FEET PER MINUTE cfm n a 30 Barometric Relief Flow Capacity 301 251 201 151 107 0 13 0 20 0 22 0 25 0 30 0 35 0 40 0 45 0 50 STATIC PRESSURE in wg FLOW IN CUBIC FEET PER MINUTE cfm Fig 31 Outdoor Air Damper Leakage 25 FLOW IN CUBIC FEET PER MINUTE cfm 60007 5000 4000 3000 2000 1000 1 0 05 010 0 15
20. supplied drive 59 Table 39 Fan Performance 48TF TM012 Horizontal Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm 2 01 2 11 2 22 2 34 2 46 2 59 2 72 2 85 3 00 3 14 3 30 3 45 3 62 3 79 3 97 4 15 LEGEND NOTES 1 Boldface indicates field supplied drive is required P B VAGUE WAS MORE to Fan 2 Maximum continuous bhp is 5 25 3 See page 32 for General Fan Performance Notes Motor drive range 830 to 1130 rpm All other rpms require field supplied drive 60 Table 40 Fan Performance 48TF TM014 Horizontal Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES MEX 1 Boldface indicates field supplied drive is required MOOR sn 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other rpms require field supplied drive 61 Table 41 Fan Performance 48 014 Horizontal Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required Pe t
21. 51 1 48 1 53 1 53 1 48 16 75 19 25 16 75 19 25 15 85 17 50 15 85 17 50 16 75 19 25 15 85 17 50 15 85 17 50 16 75 19 25 16 75 19 25 15 85 17 50 50 50 50 44 50 50 50 60 60 60 5 5 5 5 5 m 5 6 5 5 6 s 5 5 5 5 5 5 5 5 5 5 590 685 685 860 685 835 887 860 860 887 m 1 1 1 1 TWeight of 14 in roof curb Rollout switch lockout is manually reset by interrupting power to unit or resetting thermostat NOTE High static motor not available on size 014 units Evaporator coil fin material condenser coil fin material Contact your local representative for details about coated fins Table 1A Physical Data 48 008 014 cont 48TF UNIT SIZE 0 014 FURNACE SECTION Rollout Switch Cutout Temp F 195 Burner Orifice Diameter in drill size Natural Gas Std 120 31 129 30 Liquid Propane Alt 096 41 102 38 Thermostat Heat Anticipator Setting amps 208 230 v and 575 Stage 1 14 2 20 460 1 14 2 E 20 Gas Input Btuh Stage 1 125 000 125 000 120 000 180 000 120 000 120 000 180 000 200 000 180 000 180 000 200 000 Stage 2 180 000 224 000 180 000 180 000 224 000 250 000 224 000 224 000 250 000 Efficiency Steady State 80 80 80 80 Temperature Rise Range 20 50 20 50 35 65 35 65 35 65 35 65 35 65 40 70 45 75 45 75 40 70 Manifold Pressure in wg Natural Gas Std 3 5 3 5 3 5 3 5 Liquid Propan
22. 685 009 1080 1025 1007 988 970 952 933 915 897 878 860 ort 935 90 885 860 835 810 785 760 735 70 685 o12 1085 1060 1035 1010 985 960 935 910 885 860 85 01211 830 orat 1080 1060 1035 1015 990 970 950 925 905 880 860 ona 862 830 Approximate fan rpm shown ttindicates high static motor and drive package TIndicates standard motor and drive package Indicates alternate motor and drive package Indicates alternate drive package only Table 8 Evaporator Fan Motor Efficiency UNIT 48TF TM MOTOR EFFICIENCY 008 012 80 014 87 31 Table 9 Evaporator Fan Motor Performance TET AMP DRAM 48TF TM MOTOR VOLTAGE CONTINUOUS BHP OPERATING WATTS AMP DRAW 208 230 6 7 575 3 0 122 5 5 6 7 3 0 122 ae 5 5 6 7 3 0 8 6 3 9 17 3 8 5 122 a 5 5 17 3 ae 8 5 LEGEND NOTE All indoor fan motors 5 hp and larger meet the minimum effi BHP Brake Horsepower ciency requirements as established by the Energy Policy Act of 1992 Extensive motor and electrical testing on these units ensures that the full horsepower range of the motors be utilized with confi dence Using the fan motors up to the horsepower ratings shown in this table will not result in nuisance tripping or premature motor fail ure Unit warranty will not be affected Table 1
23. NOTE When the compressor is rotating in the wrong direc tion the unit will make an elevated level of noise and will not provide cooling Cooling 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 indoor and outdoor fans start on clo sure of contactors Check unit charge Refer to Checking and Adjusting Refrig erant Charge section page 68 Unit must operate a minimum of 10 minutes before adjusting charge Reset thermostat at a position above room temperature Compressor and outdoor fans will shut off Evaporator fan will shut off after 30 second delay TO SHUT OFF UNIT Set system selector switch at OFF position Resetting thermostat at a position above room tem perature shuts unit off temporarily until space temperature ex ceeds 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 set point above room temperature and verify that the burners light and evaporator fan is energized After en suring that the unit continues to heat the building lower the thermostat setting below the room temperature and verify that the burners and evaporator fan turn off fan will turn off only if fan selector switch is in the AUTO position Refer to Table 42 for the correct orifi
24. and C2 are deener gized and the compressors and outdoor condenser fan motors OFM shut off After a 30 second delay the indoor evapora tor fan motor IFM shuts off If the thermostat fan selector switch is in the ON position the evaporator fan motor will run continuously HEATING UNITS WITHOUT ECONOMIZER When the thermostat calls for heating terminal W1 is energized In order to prevent thermostat short cycling the unit is locked into the Heating mode for at least 1 minute when W1 is ener gized The induced draft motor IDM is then 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 addi tional heat is needed W2 is energized and the high fire sole noid on the main gas valve MGV is energized When the thermostat is satisfied and W1 and W2 are deenergized the stops after a 45 second time off delay COOLING UNITS WITH ECONOMISER IV When free cooling is not available the compressors will be controlled by the zone thermostat When free cooling is available the outdoor air damper is modulated by the EconoMi er IV con trol to provide a 50 to 55 F supply air temperature into the zone As the supply air temperature fluctuates above 55 or below 50 the dampers will be modulated open or close to bring the supply air temperature back within the set point limits For
25. see Fig 42 4 Screw movable flange toward fixed flange to increase fan speed and away from fixed flange to decrease fan speed Increasing fan speed increases load on motor Do not ex ceed maximum speed specified in Tables 1A and 1B 5 Set movable flange at nearest flat of pulley hub and tight en setscrew see Tables 1A and 1B for speed change for each full turn of pulley flange To align fan and motor pulleys 1 Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft 3 Make angular alignment by loosening motor from mounting plate To adjust belt tension see Fig 40 and 41 1 Loosen fan motor mounting plate nuts 2 Unit Sizes 008 009 Slide motor mounting plate away from fan scroll for proper belt tension 1 2 deflection with 8 to 10 Ib of force and tighten mounting nuts see Fig 40 Unit Sizes 012 014 Slide motor mounting plate down ward to tighten belt tension 1 2 deflection with 5 to 10 Ib of force Secure motor mounting plate nuts See Fig 41 3 Adjust bolt and nut on mounting plate to secure motor in fixed position Realign fan and motor pulleys 1 Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft 3 Make angular alignment by loosening motor from mounting plate Table 6 Sensor Standard Settings VENTILATION ANALOG 1 RELAY SETTING EQUIPMENT OUTPUT OUTPUT CONTROL RANGE RELAY SETPOINT HYSTERESIS 1 Proportion
26. 1 1 2 1 e 87 9NIUIM 5 1 a VIG 198 97 0 2 4 802 8 1 6 1 084 8 1 2 al 1H0d 9NI9UVHO hh SSE i 28 2 Vue 1n0 300N3 5_ v9 VIO Z 1 11 e CAINO 72313 LYVHO ad u3Mod 01312 SE VIG 8 559 91 2 8 0 S3MOd 01108 335 53715 NO1103NNOO T T 1 3SV8 3HI 40 WOLIO8 HONJ dn etus gU do Lm 0 10 ONY 210 861 11 1 600 ONY 1551 800 303 1 4 SI JO N3INSO 1 21183 JHL 78 2 1 b 0 d A d PAi LIS 35V8 NO 135 41 L 422 4 Z Y 7WIM3IVW 9NINJAOO 3008 9 NO 8 v SSY 1 YO GOOM Hos 099 2 6 245 3QVW 580013 31811508402 NO 0311 15 38 SLINA 70 woriu3 an 3015 3015 tosa 2 0 ON 53410834 3OvOluMVE YO JINJA 31 8VAOW3U Y 9 ONY uy 8 310N 335 1331 05 JION NI 1 15 SY 3015 NOIISnBHOO ONY 1102 Nvd3Sva NI JHL 304 39 310 IHL JO 1430 3 3Hl 79 591 SNINSdO O35n SI 31 5 30 02 JLYNYILIY 1514 9152 09 31VSN3QNOO 11 43711 JHL 53 2 1 O ON3 0133 ONY 14405 1 071 2 0 4 3 U veg JIN NI 29 3015 X09 TOYLNOD S3ovJuns 0 0 9
27. 2 L 1 OUTDOOR N N PRESSURE PSIG PRESSURE PSIG SUCTIQN LINE o SUCTIQN LINE o N N e A o N N P o a e lt a a 5 t a a e 2 o o SUCTION LINE PRESSURE KILOPASCALS C 30 40 50 50 70 30 40 50 50 70 SUCTION LINE TEMPERATURE F SUCTION LINE TEMPERATURE F 1 10 16 21 1 4 10 16 21 SUCTION LINE TEMPERATURE C SUCTION LINE TEMPERATURE C Fig 51 Cooling Charging Chart 48TF012 CIRCUIT NO 1 CIRCUIT NO 2 amp PRESSURE 516 5 SUCTION LINE PRESSURE KILOPASCALS y 50 SUCTION LINE PRESSURE KILOPASCALS gt SUCTION LINE TEMPERATURE C SUCTION LINE TEMPERATURE C Fig 52 Cooling Charging Chart 48TF014 70 CIRCUIT 2 CIRCUIT 1 m ONT NE 51 25 40113 38055384 3NI NOI 1205 SUCTION LINE TEMPERATURE F SUCTION LINE TEMPERATURE SUCTION LINE TEMPERATURE C 48 008 C Fig 53 SUCTION LINE TEMPERATURE Cooling Charging Chart o gis N17 m G 1VO9SVdOI2D AYN 55334 3NI NOI o in 1205 60 50 40 gt 5 lt 2 5
28. 3 4 or 1 8 11 4 or larger 10 Fig 9 Gas Piping Guide With Accessory Thru the Curb Service Connections FIELD POWER SUPPLY All units except 208 230 units are factory wired for the voltage shown on the nameplate If the 208 230 v unit is to be connected to a 208 v power sup ply the transformer must be rewired by moving the black wire from the 230 v 4 in spade terminal on the transformer and connecting it to the 208 v l 4 in spade terminal from the transformer Refer to unit label diagram for additional information Pig tails are provided for field service When installing units provide a disconnect per NEC Use copper conductors only when splice connectors are used field wiring must comply with NEC and local require ments In Canada electrical connections must be in accordance with CSA Canadian Standards Association C22 1 Canadian Electrical Code Part One Install conduit through side panel openings indicated in Fig 7A and 7B Route power lines through connector to termi nal connections as shown in Fig 10 On 3 phase units voltages between phases must be bal anced within 2 and the current within 10 Use the formula shown in Tables 2A 2D Note 2 to determine the percentage of voltage imbalance Operation on improper line voltage or ex cessive phase imbalance constitutes abuse and may cause dam age to electrical components Such operation would invalidate any applicable Carrier warranty NOTE
29. 8 3 8 3 4 4 4 3 1 4 1 High Static 4 0 5 0 4 0 5 0 2 8 3 8 Nominal Motor Shaft Diameter Std 5 g 5 g 5 g 7 8 5 8 7 8 7 8 High Static 7 8 7 8 7 8 Fan Pulley Pitch Diameter in Std 7 0 7 0 7 0 8 0 Alt 7 0 7 0 5 9 High Static 8 0 8 0 5 8 Belt Quantity Type Length Std 1 48 1 48 1 49 1 53 1 48 1 51 1 48 High Static 1 53 1 53 1 48 Pulley Center Line Distance Std 16 75 19 25 16 75 19 25 15 85 17 50 15 85 17 50 Alt 16 75 19 25 15 85 17 50 15 85 17 50 High Static 16 75 19 25 16 75 19 25 15 85 17 50 Speed Change Full Turn of Std 50 50 50 44 Movable Pulley Flange rpm Alt 50 50 50 High Static 60 60 60 Movable Pulley Maximum Full Turns Std 5 5 5 5 From Closed Position Alt 5 5 6 High Static 5 5 6 Factory Setting Std 5 5 5 5 Alt 5 gt 5 5 High Static 5 5 5 Factory Speed Setting rpm Std 590 685 685 860 Alt 685 835 887 High Static 860 860 887 Fan Shaft Diameter at Pulley in 1 1 1 1 LEGEND TWeight of 14 in roof curb Rollout switch lockout is manually reset by interrupting power to unit or Bhp resetting thermostat Cu Copper NOTE High static motor not available on size 014 units Evaporator coil fin material condenser coil fin material Contact your local representative for details about coated fins Table 1B Physical Data 48TM008 014 cont
30. CHART This method is to be used in Cooling mode only Take the outdoor ambient temperature and read the suction pressure gage Refer to appropriate 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 Example Fig 52 Circuit 2 Outdoor 85 F Suction 74 psig Suction Temperature should 56 F Suction temperature may vary 3 E a 5 a lt 5 a ul 2 2 5 SUCTI N LINE PRESSURE PSIG 40 50 60 70 SUCTION LINE TEMPERATURE F 4 10 16 21 SUCTION LINE TEMPERATURE C Fig 49 Cooling Charging Chart 48 008 CIRCUIT NO 1 A e PRESSURE 250 5 A o SUCTION LINE PRESSURE KILOPASCALS 20 30 40 50 60 70 80 SUCTION LINE TEMPERATURE F 1 4 10 16 21 27 SUCTION LINE TEMPERATURE C PSIG 3 50 ON LINE PRESSURI CIRCUIT NO 2 30 40 50 60 70 80 SUCTION LINE TEMPERATURE F 1 4 10 16 21 27 SUCTION LINE TEMPERATURE C Fig 50 Cooling Charging Chart 48TF009 69 CIRCUIT NO 1 CIRCUIT NO
31. If field installed thru the bottom connections are used refer to the accessory installation instructions for power wiring and gas connections Refer to Fig 7A and 7B for drilling holes in basepan FIELD CONTROL WIRING Install a Carrier approved accessory thermostat assembly according to installation in structions included with the accessory Locate thermostat assembly on a solid wall in the conditioned space to sense aver age temperature in accordance with thermostat installation instructions NOTE For wire runs up to 50 ft use no 18 AWG American Wire Gage insulated wire 35 C minimum For 50 to 75 ft use no 16 AWG insulated wire 35 C minimum For over 75 ft use 14 AWG insulated wire 35 C minimum wire larger than no 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat Route thermostat cable or equivalent single leads of colored wire from thermostat subbase terminals to low voltage connec tions on unit shown in Fig 11A and 11B as described in Steps 1 4 below 1 If unit is mounted on roof curb and accessory thru the curb service plate connection is used route wire through connection plate 2 Pass control wires through the hole provided on unit see connection D in Connection Sizes table in Fig 7A and 7B FIELD POWER Seay PN I FIELD POWER SUPPLY Joc l c DISCONN
32. MCA does not exceed the published MOCP then MOCP would not change The MOCP in this example is 45 amps and the MCA New is below 45 therefore the MOCP is acceptable If MCA New is larger than the pub lished MOCP raise the MOCP to the next larger size For separate power the MOCP for the power exhaust will be 15 amps per NEC Table 2B Electrical Data 48 Units With Convenience Outlet VOLTAGE OFM ea POWER supply DISCONNECT TARSIER SORTASE o E one AA LRA 50 50 233 233 208 230 3 60 187 1 4 50 50 233 233 High 1 106 6 50 9 50 9 60 60 53 53 273 273 110 mns 460 3 60 414 0 7 3 110 cm 132 1 575 3 60 ema emo 4650 3 60 508 83 812 Tons 276 35 29 EA 30 22 208 230 3 60 187 130 0 14 E 575 3 60 0 Tone 460 3 60 518 575 3 60 Std 575 3 60 518 6 amp 2 07 Ait LEGEND FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration Indoor Evaporator Fan Motor LRA Locked Rotor Amps C US Minimum Circuit Amps MOCP Maximum Overcurrent Protection NEC National Electrical Code OFM Outdoor Condenser Fan Motor RLA Rated Load Amps The values listed in this table do not include power exhaust See table below for power exhaust requirements TUsed to determine m
33. Static Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High Static Table 1A Physical Data 48 008 014 D E F008 D E F009 D EO14 12 1050 1077 1100 75 143 Reciprocating Reciprocating Reciprocating Scroll 2 2 2 2 2 2 2 42 ea 65 ea 54 ea 54 ea Fixed Orifice Metering Device 4 13 6 14 7 3 8 10 4 14 9 2 7 13 8 6 Enhanced Copper Tubes Aluminum Lanced Fins 1 17 2 17 5 2 17 20 50 18 00 20 47 25 00 Propeller 6400 6400 7000 7000 2 22 2 22 2 22 2 22 1 4 1100 1 4 1100 1 4 1100 1 4 1100 600 600 600 600 Enhanced Copper Tubes Aluminum Double Wavy Fins Face Split 3 15 3 15 3 15 4 15 8 0 8 0 10 0 11 1 Centrifugal Type 1 15 x 15 1 15 x 15 1 15 x 15 1 15 x 15 1 215 x15 1 15 x 15 1 15 x15 1 15 x 15 1 15 x 15 1 15 x15 Belt Belt Belt Belt Belt Belt Belt 3000 3100 4000 5000 2 40 2 40 2 40 3 70 2 40 2 90 5 25 3 70 3 70 5 25 56 56 56 56 56 56 56 56 56 56 590 840 685 935 685 935 860 1080 685 935 835 1085 830 1130 860 1080 860 1080 830 1130 2100 2100 2100 2100 2 4 3 4 2 8 3 8 2 8 3 8 4 0 5 0 2 8 3 8 E 3 4 4 4 3 1 4 1 4 0 5 0 4 0 5 0 2 8 3 8 5 8 5 8 5 8 7 8 1 2 7 8 7 7 8 7 8 7 8 7 0 7 0 7 0 8 0 7 0 7 0 5 9 8 0 8 0 5 8 1 48 1 48 1 49 1 53 1 48 1
34. a factory mounted PremierLink con trol the supply air temperature SAT sensor 33ZCSENSAT is factory supplied and wired The wiring is routed from the PremierLink control over the control box through a grommet into the fan section down along the back side of the fan and along the fan deck over to the supply air opening 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 2 in hole the flange or duct Use two field supplied self drilling screws to secure the sensor probe in a horizontal orientation 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 or heat surfaces Outdoor Air Temperature Sensor OAT When the unit is supplied with a factory mounted PremierLink control the outdoor air temperature sensor OAT is factory supplied and wired Install the Indoor Air Quality CO2 Sensor Mount the optional indoor air quality CO sensor according to manufac turer specifications A separate field supplied transformer must be used to pow er the CO sensor Wire the CO sensor to the COM and IAQI terminals of J5 on the PremierLink controller Refer to the Pr
35. attached to horizontal discharge openings and all ductwork secured to the flanges Insulate and weatherproof all external ductwork joints and roof openings with counter flashing and mastic in accordance with applicable codes Ducts passing through an unconditioned space must be in sulated and covered with a vapor barrier If a plenum return is used on a vertical unit the return should be ducted through the roof deck to comply with applica ble fire codes A minimum clearance is not required around ductwork Cabinet return air static pressure a negative condition should not exceed 0 35 in wg with economizer or 0 45 in wg without economizer These units are designed for a minimum heating operation continuous return air temperature of 50 F dry bulb or an in termittent operation down to 45 F dry bulb such as when used with a night set back thermostat To operate at lower return air temperatures a field supplied outdoor air temperature control must be used to initiate both stages of heat when the temperature is below 45 Indoor com fort may be compromised when these lower air temperatures are used with insufficient heating temperature rise Step 3 Install External Trap for Condensate Drain The unit s 3 4 in condensate drain connections located on the bottom and side of the unit Unit discharge con nections do not determine the use of drain connections either drain connection can be used with vertical o
36. node and 1 negative node The DCV LED should turn on The actuator should drive to between 90 and 9596 open 3 Turn the DCV Maximum Position potentiometer to mid point The actuator should drive to between 20 and 80 open 4 Turn the DCV Maximum Position potentiometer to fully CCW The actuator should drive fully closed 5 Turn the Minimum Position potentiometer to midpoint The actuator should drive to between 20 and 80 open 6 Turn the Minimum Position Potentiometer fully CW The actuator should drive fully open 7 Remove the jumper from TR and N The actuator should drive fully closed 8 Return EconoMi er IV settings and wiring to normal after completing troubleshooting SUPPLY AIR INPUT To check supply air input 1 Make sure EconoMi er IV preparation procedure has been performed 2 Setthe Enthalpy potentiometer to A The Free Cool LED turns on The actuator should drive to between 20 and 80 open 3 Remove the 5 6 kilo ohm resistor and jumper T to The actuator should drive fully open 4 Remove the jumper across T and T1 The actuator should drive fully closed 5 Return EconoMi er IV settings and wiring to normal after completing troubleshooting ECONOMISER IV TROUBLESHOOTING COMPLE TION This procedure is used to return the IV to operation No troubleshooting or testing is done by perform ing the following procedure 1 Disconnect power at TR and TRI 2 Setenthalpy pot
37. the greater of DCV and supply air sensor enthalpy to the ABCD set point signals between minimum position and either maximum position Vivas tt Modulation ls based the greater of DCV and supply air ed no power Unoccupied ais supply signal sensor signals between closed and either maximum position ttModulation is based on the DCV signal DCV or fully open supply air signal 2 10 VDC ACTUATOR 2 84 Volts Fig 61 EconoMi er IV Functional View 79 Access panels 23 Altitude compensation Barometric flow capacity Burner ignition 73 Burner rack 74 Burner section 73 Burner spark gap 64 Carrier Comfort Network Charging chart refrigerant Clearance 10 11 CO sensor Configuration Settings 28 30 Combustion blower wheel Compressor Lubrication Mounting 63 Rotation 63 Condensate drain Cleaning 67 Location 2 4 Condenser coil Cleaning 67 Condenserfan 6 8 Adjustment 68 Control circuit Wiring 12 13 Wiring raceway 18 Convenience outlet 18 Demand control ventilation Dehumidification 30 Dimensions 3 10 11 Ductwork 2 EconoMi er2 22 25 4 to 20 mA control 25 EconoMi er IV 22 30 Adjustment 68 Components 22 Damper movement 29 Dry bulb temperature sensor Troubleshooting 78 79 Wiring 24 Electrical connections 12 Electrical data 14 17 Enthalpy changeover set points Enthalpy sensor 22 Evaporator coil 6 8 Cleaning 67 Evaporator fan motor Efficiency 31 Lubrica
38. to determine the percent of volt age imbalance 96 Voltage Imbalance 100 max voltage deviation from average voltage average voltage Example Supply voltage is 460 3 60 452v A B BC 464v 455 v Average Voltage A _ 1371 3 457 Determine maximum deviation from average voltage AB 457 452 25v BC 464 457 27 v 457 455 2v 14 IMPORTANT If the supply voltage phase imbalance is more than 2 tact your local electric utility company immediately POWER EXHAUST ELECTRICAL DATA POWEREXHAUST MCA MCA MCA 230 675v Separate CRPWREXHO21A01 N A 09 15 CRPWREXHO22A01 33 132 15 23 01 15 CRPWREXHO24A01 16 064 15 CRPWREXHO25A01 N A 09 15 26 01 15 CRPWREXHO027A01 15 CRPWREXHO28A01 17 068 15 CRPWREXHO29A01 N A 10 15 CRPWREXHO030A01 15 N A Not available NOTE If a single power source is to be used size wire to include power exhaust and MOCP Check MCA and MOCP when power exhaust is powered through the unit Determine the new MCA including the power exhaust using the following formula MCA New MCA unit only MCA of Power Exhaust For example using a 48 008 unit with MCA 40 1 and MOCP 45 with CRPWREXHO030A01 power exhaust MCA New 40 1 amps 1 6 amps 41 7 amps If the new
39. vi sual display of operational or sequential problems when the power supply is interrupted When a break in power occurs the module will be reset resulting in a loss of fault history and the indoor evaporator fan ON OFF times will be reset For addi tional information refer to the Start Up Heating section on page 64 The LED error code can be observed through the viewport See Fig 12 During servicing refer to the label on the control box cover or Table 43 for an explanation of LED error code descriptions If lockout occurs unit may be adjusted by interrupting pow er supply to unit for at least 5 seconds Main Burners At the beginning of each heating sea son inspect for deterioration blockage due to corrosion or oth er causes Observe the main burner flames and replace burners if necessary A CAUTION When working on gas train do not hit or plug orifice spuds REMOVAL AND REPLACEMENT OF GAS TRAIN Fig 57 and 58 1 Shut off manual gas valve 2 Shut off power to unit and install lockout tag 3 Slide out burner section side panel not shown 4 Disconnect gas piping at unit gas valve using backup wrench on the flats of the valve body where the gas pipe enters the gas valve See Fig 57 5 Remove wires connected to gas valve Mark each wire 6 Remove wires from ignitor and sensor wires at the Inte grated Gas Unit Controller 100 7 Remove the 2 screws that attach the burner rack to the vestibul
40. 0 Accessory Static Pressure Drop wg 48TF TM008 014 CFM 900 1200 1400 1600 180 200 2200 240 2600 0 05 007 009 0 09 012 013 015 017 048 1 Heater Module 2 Heater Modules Table 11 Accessory FIOP IV and EconoMi er2 Static Pressure wg CFM i250 150 9 200 220 2500 2750 i e ove 025 LEGEND The static pressure must be added to external static pressure The sum and the evaporator entering air cfm should be used in conjunction with the Fan Factory Installed Option Performance tables to determine indoor blower rpm and watts COMPONENT Vertical Economizer Horizontal Economizer GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES 1 Fan Performance is based on clean filters and wet coil data 3 Use of a field supplied motor may affect wire sizing Contact 2 Extensive motor and electrical testing on these units ensures your Carrier representative for details that the full range of the motor can be utilized with confidence 4 Interpolation is permissible Do not extrapolate Using the fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected See Evaporator Fan Motor Perfor mance data Table 9 for add
41. 1 4 Catalog 04 53480015 01 Tab Printed U S A Form 487 651 Pg CL 1 9 05 Replaces 481 4 1 CUTALONGDOTTEDLINE CUT ALONG DOTTED LINE 77
42. 16 _ 0 0 7 15 11 4 0 2 1 8 BOLT HEADS 2 BOLT HEADS 541 NE SEE NOTE 2 gt j GAS SERVICE PLATE lt 9 ra SEE NOTE 8 18 3 16 gt f 513 0 4 5 16 7 CINSIDE 110 INSIDE P 17 8 3 16 l Q 5 07 0 1 4 71 2 0 4 9 15 115 51 lt 15131 9 07 2 15 16 751 o SUPPLY AIR VIEW AW 777 Z HEAD BOLT TO BE ON INSIDE OF FLANGE NOTE CAMBRIDGEPORT SURE LOCK CORNER FASTENING DEVICE IS ACCEPTABLE ALTERNATE CONSTRUCTION 5 1264 VIEW B ALL CORNERS SEE VIEW B2 Fig 2 Roof Curb Details Step 4 Rig and Place Unit Inspect unit for trans portation damage File any claim with transportation agency Keep unit upright and do not drop Spreader bars are not re quired if top crating is left on unit Rollers may be used to move unit across a roof Level by using unit frame as a reference See Tables 1A and 1B and Fig 6 for additional information Operat ing weight is shown in Tables 1A and 1B and Fig 6 Lifting holes are provided in base rails as shown in Fig 6 7A and 7B Refer to rigging instructions on unit A CAUTION All panels must be in place when rigging and lifting Unit is not designed for handling by a fork truck Damage to unit may result
43. 35 P d PER Iv dad old CoM Ay MIN PL6 R FOR STD PEN UNIT ocv 7 T 112 lt T FIELD INSTALLED d 9 jj AO SENSOR ot 2v TOV L le doge wor usto 126 oat TEMP 5 lt SOKTE Y YEL Yl NOT USED 1 Reo 500 2v tov 8 SR n FREE lt FIELD ACCESSORY 2 RAT ENTHALPY SENSOR BLU lt je20kQ Fa 9 2 5 al FIELD SPLICE S tX N FIELD SPLICE 4 BRN l lt L 1 NOT USED 1 GRY ORG 12 TO EWR EXHAUST NOT USED lt LEGEND Potentiometer Defaults Settings NOTES DCV Demand Controlled Ventilation Power Exhaust Middle 1 620 ohm 1 watt 5 resistor should be removed only when using differential IAQ Indoor Air Quality Minimum Pos Fully Closed enthalpy or dry bulb LA Low Ambient Lockout Device DCV Max Middle 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 Fig 28 EconoMi er IV Wiring
44. 42 6 000 43 7 000 43 8 000 44 9 000 44 10 000 45 11 000 45 12 000 46 13 000 47 14 000 47 As the height above sea level increases there is less oxygen per cubic foot of air Therefore heat input rate should be reduced at higher altitudes TOrifice available through your local distributor Integrated Gas Controller IGC Operation NOTE The default value for the evaporator fan motor ON and OFF delay is 45 seconds The Integrated Gas 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 light emitting diode is ob served 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 sec onds 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 dur ing which the modification can occur If the limit switch trips during this period the evaporator fan
45. 48 008 014 Single Package Rooftop Gas Heating Electric Cooling Units Installation Start Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS 1 5 1 62 Step 1 Provide Unit 1 ROOF CURB e ALTERNATE UNIT SUPPORT SLAB MOUNT Step 2 Field Fabricate Ductwork 2 Step 3 Install External Trap for Condensate 2 Step 4 Rig and Place Unit 4 POSITIONING Step 5 Install Flue Hood 12 Step 6 Install Gas Piping 12 Step 7 Make Electrical Connections 12 FIELD POWER SUPPLY FIELD CONTROL WIRING HEAT ANTICIPATOR SETTINGS Step 8 Adjust Factory Installed Options 18 CONVENIENCE OUTLET e NOVAR CONTROLS MANUAL OUTDOOR AIR DAMPER PREMIERLINK CONTROL OPTIONAL ECONOMISER IV AND ECONOMIS ER2 ECONOMISER IV STANDARD SENSORS ECONOMISER IV CONTROL MODES Step 9 Adjust Evaporator Fan Speed 30 5 63 5 63 67 67 74 TROUBLESHOOTING 75 19 80 START UP CL 1 SAFETY
46. 48TM UNIT SIZE 0 014 FURNACE SECTION Rollout Switch Cutout Temp F 195 Burner Orifice Diameter in drill size Natural Gas Std 120 31 129 30 Liquid Propane Alt 096 41 102 38 Thermostat Heat Anticipator Setting amps 208 230 v and 575 Stage 1 14 Stage 2 20 460 1 14 Stage 2 20 Gas Input Btuh Stage 1 180 000 200 000 180 000 180 000 Stage 2 224 000 180 000 180 000 250 000 224 000 224 000 250 000 Efficiency Steady State 80 80 80 80 Temperature Rise Range 20 50 20 50 35 65 35 65 35 65 35 65 35 65 40 70 45 75 40 70 Manifold Pressure in wg Natural Gas Std 3 5 3 5 3 5 Liquid Propane Alt 3 5 3 5 3 5 Gas Valve Quantity 1 1 Gas Valve Pressure Range Psig 0 180 0 487 0 180 0 487 in wg 5 0 13 5 5 0 13 5 Field Gas Connection Size in 3 4 3 4 HIGH PRESSURE SWITCH psig Standard Compressor 450 50 500 50 Internal Relief Differential Cutout 428 428 Reset Auto 320 320 LOW PRESSURE SWITCH psig Cutout 7x3 Reset Auto 22 7 FREEZE PROTECTION THERMOSTAT F Opens 30 5 Closes 45 5 OUTDOOR AIR INLET SCREENS Cleanable Screen size and quantity varies by option selected RETURN AIR FILTERS Throwaway Quantity Size in 4 16 x 20 x2 4 16 x 20 x2 4 20 x 20 x2 4 20 x 20 x2 LEGEND TWeight of 14 in roof curb Al Aluminum Rollout switch lockout is manually reset by interrupting power to unit or Bhp Brake Horsepower resetting thermostat Cu Cop
47. 53 50 60 REFRIGERANT TYPE R 22 Expansion Device Acutrol Metering Device Operating Charge 1 02 Circuit 1 7 10 7 14 8 10 9 8 Circuit 2 8 2 8 5 8 8 9 5 CONDENSER COIL Enhanced Copper Tubes Aluminum Lanced Fins Rows Fins in 2 17 2 17 2 17 2 17 Total Face Area sq ft 20 50 20 50 25 00 25 00 CONDENSER FAN Propeller Type Nominal Cfm 6500 6500 7000 7000 Quantity Diameter in 2 22 2 22 2 22 2 22 Motor Hp Rpm 1 4 1100 1 4 1100 1 4 1100 1 4 1100 Watts Input Total 650 650 650 650 EVAPORATOR COIL Enhanced Copper Tubes Aluminum Double Wavy Fins Face Split Rows Fins in 3 15 3 15 3 15 4 1 Total Face Area sq ft 8 9 8 9 10 0 11 1 EVAPORATOR FAN Centrifugal Type Quantity Size in Std 1 15x 15 1 15 x 15 1 15 x 15 1 15 x 15 Alt 1 15 x 15 1 15 x 15 1 15 x 15 High Static 1 15 x 15 1 15 x 15 1 15 x 15 Type Drive Std Belt Belt Belt Belt Alt Belt Belt Belt High Static Belt Belt Belt Nominal Cfm 2900 3000 3200 5000 Maximum Continuous Bhp Std 2 40 2 40 2 40 3 70 Alt 2 40 2 90 5 25 High Static 3 70 3 70 5 25 Motor Frame Size Std 56 56 56 56 Alt 56 56 56 High Static 56 56 56 Fan Range Std 590 840 685 935 685 935 860 1080 Alt 685 935 m 835 1085 830 1130 High Static 860 1080 860 1080 830 1130 Motor Bearing Ball Ball Ball Ball Maximum Allowable Rpm 2100 2100 2100 2100 Motor Pulley Pitch Diameter Min Max in Std 2 4 3 4 2 8 3 8 2 8 3 8 4 0 5 0 Alt 2
48. 6 5 0 SZOL 8 E 01 G3HOVLLY 38 01005 SIONVIS 03179915 01314 5110 821 8 1 XYAMOd CE00 L00 v E 39uVHOSIQ 1 21 0 804 AINO 8400 4008 ANOSS322V OL 22 8 02 Ave 2 1 HV3M OSHOVLLY 38 Ol YYOMLING SLINN 393VHOSIQ 7 21183 NO 7 2 22118 2 22v 2 1 SG CXVID 63715 361 3215 11 MOIS NIV 40 119319 lt 0 538 391 1 5 MIV 3015100 5 HO LOVE lOVlOOUMdWLBHO ALIAVED JO YSLNSO c G39Vx2Vd AYOSSIOIV 5331713 378504514 350 303 0 034 5310 3531 SUDLSALTIBUNT STD INT SNOTSNSNIG 55322 831714 1HVHO N3MOd 401108 6310N 528 91 2 01 2 926 0 21 91 5 l 84 8 2 1 ESI BEE 582 88 S6l 20 1 1 1 A 92 0501 10031 33187 528 91 2 01 2 26 8 E 0 eszi 91 61 654 8 4 5 2 151 EEE 521 582 28 261 201 522 SEOL 10031 331 3318v 48 91 4 2 2 958 91 11 6 2 0501 91 5 S E Elot 8 4 521 ve 28 151 66 088 500041 341 44187 48 91 4 2 2 958 91 11 6 2 050 91 5 5 84 8 2 1 221 601 EL 191 98 681 6 59 S 565 028 8000 1 3 1 18 WW NI WW NI 14 WW NI 14 WW NI 13 95 81 93 81 95 81 99 81 97 81 93 81 93 81 7 H LHOTAM M3NH0O CO LH913M 3 802 80 LH9 13M YSNYOO CW LHOTSM u3Nuoo 7374 M LHOT SM 18913 LINN
49. 60 203 256 30 25 154 575 360 518 632 83 584 2 0 7 16 LEGEND Maximum deviation is 7 v FLA Full Load Amps Determi t of volt imbal HACR Heating Air Conditioning and Refrigeration dd 27 Indoor Evaporator Fan Motor Voltage Imbalance 100 x 257 LRA Locked Rotor Amps C US MCA Minimum Circuit Amps 1 53 Maximum Overcurrent Protection This amount of phase imbalance is satisfactory as it is below the maximum National Electrical Code allowable 295 OFM Outdoor Condenser Fan Motor RLA Rated Load Amps The values listed in this table do not include power exhaust See table below for power exhaust requirements TUsed to determine minimum disconnect per NEC Fuse or HACR circuit breaker ttFuse only Data shown in table is for Compressor no 1 208 230 3 60 Compressor no 2 RLA is 14 1 amps and LRA is 105 amps 460 3 60 Compressor no 2 RLA is 7 1 amps and LRA is 55 amps 575 3 60 Compressor no 2 RLA is 6 4 amps and LRA is 40 amps 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 2 Use the following formula
50. ATURE SENSOR Included HH79NZ017 Included HH79NZ017 Included Not Used Included Not Used Required 33ZCT55SPT or Equivalent PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and Outdoor Air Temperature sensor HH79NZ017 Included with factory installed PremierLink control field supplied and field installed with field installed PremierLink control NOTES 1 Sensors Optional 33ZCSENCO Room sensor adjustable Aspirator box is required for duct mounting of the sensor 33ZCASPCO Aspirator box used for duct mounted room sensor 33ZCT55CO2 Space temperature CO room sensor with override 33ZCT56CO2 Space temperature and room sensor with override and setpoint 2 All units include the following Standard Sensors Outdoor Air Sensor 50HJ540569 Opens at 67 F closes at 52 F not adjustable OUTDOOR AIR ENTHALPY SENSOR Required 57 077 Required HH57AC077 Mixed Air Sensor HH97AZ001 PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and Outdoor Air Temperature Sensor HH79NZ017 Compressor Lockout Sensor 50HJ540570 Opens at 35 F closes at 50 F RETURN AIR ENTHALPY SENSOR Required HH57AC078
51. Altitude until the desired set ting is reached 5 Press Mode to move through the variables 6 Press Enter to lock in the selection then press Mode to continue to the next variable Dehumidification of Fresh Air with DCV Control Infor mation from ASHRAE indicates that the largest humidity load on any zone is the fresh air introduced For some applications a device such as a 62AQ energy recovery unit is added to re duce the moisture content of the fresh air being brought into the building when the enthalpy is high In most cases the normal heating and cooling processes are more than adequate to re move the humidity loads for most commercial applications If normal rooftop heating and cooling operation is not ade quate for the outdoor humidity level an energy recovery unit and or a dehumidification option should be considered Step 9 Adjust Evaporator Fan Speed Ad just evaporator fan speed to meet jobsite requirement Table 7 shows fan rpm at motor pulley settings Table 8 shows motor efficiencies Table 9 shows motor performance Tables 10 and 11 show accessory static pressure Refer to Fan Performance Tables 12 41 to determine fan speed settings Fan motor pulleys are factory set for speed shown in Tables 1A and 1B To change fan speed 1 Shut off unit power supply and install lockout tag 2 Loosen belt by loosening fan motor mounting plate nuts see Fig 40 and 41 3 Loosen movable pulley flange setscrew
52. CONSIDERATIONS Installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrical compo nents Only trained and qualified service personnel should install repair or service air conditioning equipment Untrained personnel can perform basic maintenance func tions of cleaning coils and filters and replacing filters All other operations should be performed by trained service personnel When working on air conditioning equipment observe precau tions 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 A WARNING Disconnect gas piping from unit when leak testing at pressure greater than 1 2 psig Pres sures greater than 1 2 psig will cause gas valve damage resulting in hazardous condition If gas valve is ever subjected to pressure greater than 1 2 psig it must be replaced before use When pressure testing field supplied gas pip ing at pressures of 1 2 psig less a unit con nected to such piping must be isolated by manually closing the gas valve s WARNING Before performing service or maintenance operations unit turn off main power switch to unit install lockout tag Ensure voltage listed on unit data plate agrees with electri cal supply provided for th
53. CV set point be left at 2 volts since the sensor voltage will be ignored by the EconoMi er IV controller until it rises above the 3 6 volt set ting of the minimum position potentiometer Once the fully occupied damper position has been deter mined set the maximum damper demand control ventilation potentiometer to this position Do not set to the maximum posi tion as this can result in over ventilation to the space and poten tial 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 6 Use setting 1 or 2 for Carrier equipment See Table 6 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 select the preset number See Table 6 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 any time 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 Usethe 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
54. Communications RTU Terminal RETURN AIR Outdoor Air Temperature Sensor SENSOR PWR Power RED RTU Rooftop Unit SAT Supply Air Temperature Sensor TB Terminal Block Enthalpy Sensors and Control The enthalpy control 57 077 is supplied as a field installed accessory to be used with the economizer damper control option The outdoor air enthalpy sensor is part of the enthalpy control The separate field installed accessory return air enthalpy sensor 57 78 is required for differential enthalpy control 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 PremierLink controller Locate the controller in place of an existing econo mizer controller or near the actuator The mounting plate may not be needed if existing bracket is used 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 Outdoor Enthalpy Sensor Enthalpy Controller 57 077 To wire the outdoor air enthalpy sensor perform the following see Fig 19 and 20 NOTE The outdoor air sensor can be removed from the back of the enthalpy controller and mounted remotely 1 Use a 4 conductor 18 o
55. E EN UNIT NOTES 1 If any of the original wire furnished must be replaced it must be replaced with type 90 C wire or its equivalent 014 ALT MTR 012 STATIC DM 22 ST lt 2 BLK BLK YEL BLK RED ORN WHT RED FLAME SEN YEL O GRN YEL 3 BRN GRN YEL GROUNDED THRU STANDOFF p e BRN 10T HIGH amp LOW HEAT 7 1 2 amp B 1 2T HIGH HEAT ONLY BLU HPS LPS1 BLK O BLK BLU BLU lt HPS2 BLK LPS2 NP FPT BLK 0 10VDC 4 20MA CONTROLLER CONNECTION FOR ECONOMIZER FACTORY OR FIELD INSTALLED 2 2 Three phase motors are protected under primary 8 o single phasing conditions a 3 Use copper conductors only 8 ite 4 TRAN is wired for 230 v unit If unit is to be run o o with 208 v power supply disconnect BLK wire from 230 v tap ORN and connect to 200 v tap RED Insulate end of 230 v tap BOARD COMPONENT ARRANGEMENT LEGEND Outdoor Fan Motor Capacitor Plu R co Circuit Breaker PL Plug Assembly Splice Compressor Motor QT Quadruple Terminal EQUIP Equipment RS Rollout Switch lt _ gt Splice Marked FPT Freeze Up Protection Thermostat SAT Supply Air Temperature
56. ECT lud 7 zn D 51 ep 2 2 2 LEGEND 3 Feed wires through the raceway built into the corner post to the 24 v barrier located on the left side of the control box See Fig 12 The raceway provides the UL required Underwriters Laboratories clearance between high and low voltage wiring 4 Connect thermostat wires to screw terminals on low voltage connection board HEAT ANTICIPATOR SETTINGS Set heat anticipator settings at 0 14 amp for the first stage and 0 20 amp for second stage heating TO COMPS Contactor Compressors Indoor Evaporator Fan Contactor NEC National Electrical Code TB Terminal Block 60 3 60 Terminal Block Splice Connection Factory Supplied Field Wiring Factory Wiring reo 2 575 3 60 COOL STAGE 1 1 L HEAT STAGE 1 wwi 4 WIRE l CONNECTIONS COOL STAGE 2 YY2 p To m LOW VOLTAGE HEAT STAGE 2 2 SECTION m We ares CONNECTION 24 VAC HOT Boer E BOARD 24 VAC COM Qon N A OUTDOOR AIR 1 SENSOR 52 CONTROL CONNECTION BOARD THERMOSTAT CONTROL CONNECTION BOARD 1 DIPSWITCH SETTINGS OFr i iE EH Field Wiring NOTE Underlined letter indicates active thermostat output when configured for A C operation Fig 11 Low Voltage Connections With
57. INN Step 5 Install Flue Hood Flue hood is shipped screwed to the burner compartment access panel Remove from shipping location and using screws provided install flue hood and screen in location shown in Fig 8 Step 6 Install Gas Piping Unit is equipped for use with type of gas shown on nameplate Refer to local building codes or in the absence of local codes to ANSI Z223 1 latest year and addendum Z223 1A latest year entitled National Fuel Gas Code In Canada installation must be in accordance with the 1 149 1 and 1 149 2 installation codes for gas burning appliances when installing gas piping For natural gas applications gas pressure at unit gas con nection must not be less than 4 0 in wg 5 0 in wg in high heat units or greater than 13 0 in wg while unit is operating For liquid propane applications the gas pressure must not be less than 5 0 in wg or greater than 13 0 in wg at the unit connection Size gas supply piping for 0 5 in wg maximum pressure drop Do not use supply pipe smaller than unit gas connection A CAUTION When connecting gas piping to gas valve inlet use prop erly sized back up wrench to prevent valve damage Support gas piping as shown in the table in Fig 9 For ex ample 3 4 gas pipe must have one field fabricated support beam every 8 ft See Fig 9 for typical pipe guide and locations of
58. IRFLOW cfm x 100 Fig 16 Outdoor Air Damper Position Setting 19 PREMIERLINK CONTROL The PremierLink control ler 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 Carrier s diagnostic standard tier display tools such as Navigator or Scrolling Marquee can be used with the PremierLink controller The PremierLink controller see Fig 17A and 17B requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock This is necessary for broadcast of time of day functions occupied unoccupied No sensors are supplied with the field mounted PremierLink control The factory installed PremierLink con trol includes only the supply air sensor SAT and the outdoor air temperature sensor OAT as standard An indoor air quality CO2 sensor can be added as an option Refer to Table 3 for sensor usage Refer to Fig 18 for PremierLink controller wiring The PremierLink control may be mounted in the control panel or an area below the control panel NOTE PremierLink controller versions 1 3 and later are shipped in Sensor mode If used with a thermostat the PremierLink controller must be configured to Thermostat mode Install the Supply Air Temperature Sensor SAT When the unit is supplied with
59. MPS LI TEMPERATURES AND PRESSURES OUTDOOR AIR TEMPERATURE RETURN AIR TEMPERATURE COOLING SUPPLY AIR GAS HEAT SUPPLY AIR GAS INLET PRESSURE GAS MANIFOLD PRESSURE REFRIGERANT SUCTION PRESSURE L2 L3 L2 L2 L2 DB DB DB DB REFRIGERANT TEMP SUCTION PRESSURE REFRIGERANT DISCHARGE DISCHARGE TEMPERATURE VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK THAT INDOOR AIR FILTERS ARE CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEELS AND PROPELLERS FOR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS ENSURE BELT TENSION IS CORRECT AND BLOWER PULLEYS ARE PROPERLY ALIGNED VERIFY INSTALLATION OF ECONOMIZER HOOD IF EQUIPPED L3 L1 L3 L3 L3 WB WB IN WG IN WG HI FIRE IN WG LO FIRE PSIG CIRCUIT NO 1 PSIG CIRCUIT NO 2 CIRCUIT NO 1 CIRCUIT NO 2 PSIG CIRCUIT NO 1 PSIG CIRCUIT NO 2 F C CIRCUIT NO 1 F C CIRCUIT NO 2 L1 VERIFY REFRIGERANT CHARGE USING CHARGING TABLES O VERIFY THAT 3 PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION 48TF014 AND 48 009 014 ONLY GENERAL SET ECONOMIZER MINIMUM VENT POSITION AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS IF EQUIPPED Copyright 2005 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book
60. NTEGRAT ED CONNECTION BOARD GAS CONTROLLER IGC e RACEWAY COMPRESSOR COMPRESSOR NO 2 NO 1 Fig 12 Field Control Wiring Raceway and Compressor Location Step 8 Adjust Factory Installed Options CONVENIENCE OUTLET An optional convenience out let provides power for rooftop use For maintenance personnel safety the convenience outlet power is off when the unit dis connect is off Adjacent unit outlets may be used for service tools An optional Hot Outlet is available from the factory as a special order item NOVAR CONTROLS Optional Novar controls ETM3051 are available for replacement or new construction jobs MANUAL OUTDOOR AIR DAMPER The outdoor air hood and screen are attached to the basepan at the bottom of the unit for shipping Assembly 1 Determine quantity of ventilation required for building Record amount for use in Step 8 Remove filter access panel by raising panel and swinging panel outward Panel is now disengaged from track and can be removed No tools are required to remove the filter access panel Remove outdoor air opening panel Save panels and screws See Fig 13 Separate hood and screen from basepan by removing the screws and brackets securing them Save all screws and discard brackets Replace outdoor air opening panel with screws saved from Step 2 Place hood on front of outdoor air opening panel See Fig 14 for hood details Secure top o
61. OFF delay will increase by 15 seconds on the next cycle A maximum of 9 trips can occur extending the evaporator fan OFF delay to 180 seconds To restore the original default value reset the power to the unit TO SHUT OFF UNIT Set system selector switch at OFF position Resetting heating selector lever below room tempera ture will shut unit off temporarily until space temperature falls below thermostat setting Safety Relief A soft solder joint at the suction line Schrader port provides pressure relief under abnormal tempera ture and pressure conditions 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 Operating Sequence COOLING UNITS WITHOUT ECONOMIZER When thermostat calls for cooling terminals and 1 are energized The indoor evaporator fan contactor IFC compressor con tactor no 1 C1 and outdoor fan contactor OFC are ener gized and evaporator fan motor compressor no 1 and both condenser fans start The condenser fan motors run continuous ly while unit is cooling If the thermostat calls for a second stage of cooling by energizing Y2 compressor contactor no 2 C2 is energized and compressor no 2 starts When the thermostat is satisfied
62. Sensor GND Ground SEN Sensor Factory Wiring HPS High Pressure Switch TRAN Transformer E HS Hall Effect Sensor Field Control Wiring lgnitor E Field Splice IDM nduced Draft Motor Field Power Wiring IFC mi door ran AX Marked Wire Accessory or Optional Wiring IFMOVL Indoor Motor Overload Switch Terminal Marked indicate common potential only IGC Integrated Gas Unit Controller em Sue Marked not to represent wiring LPS Low Pressure Switch i LS Limit Switch Terminal Unmarked MGV Main Gas Valve Outdoor Fan Contactor Terminal Block Fig 60 Typical Unit Wiring Schematic Component Arrangement 208 230 3 60 Unit Shown 77 EconoMi er IV Troubleshooting See Table 46 for IV logic A functional view of the EconoMi er IV is shown in Fig 61 Typical settings sensor ranges and jumper positions are also shown An IV simulator program is available from Carrier to help with EconoMi er IV training and troubleshooting ECONOMISER 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 IV IMPORTANT B
63. al 2 Interface w Standard OPTIONAL 0 10V 4 20 mA 0 2000 BEC MEM 50 2 10V Building Control System Proportional 7 20 mA 9 2000 1090 90 0 10V OX 10 s 8 Health amp amp Health amp Safety 0 10V E _ 011090 joo 0 10V iidem deme 0 10V f ea lt id 2i 0 10V 4 Proportional ES 4 20 mA 0 1100 1100 50 o 10V Economizer Parking Air Intakes 0 10V LEGEND ppm Parts Per Million P STRAIGHT EDGE MUST MOVABLE BE PARALLEL FLANGE WITH BELT SHAFTS MUST PARALLEL SETSCREWS FIXED FLANGE SINGLE GROOVE MOTOR MOUNTING PLATE NUTS Fig 40 Typical Belt Drive Motor Mounting for Sizes 008 009 Fig 42 Evaporator Fan Pulley Adjustment MOTOR MOUNTING PLATE NUTS HIDDEN Fig 41 Typical Belt Drive Motor Mounting for Sizes 012 014 Table 7 Fan Rpm at Motor Pulley Settings MOTOR PULLEY TURNS OPEN ESTE a a ie 840 815 790 765 740 715 690 665 635 615 50 oos 935 910 885 860 835 810 785 760 735 710 685 oostt 1080 1025 1007 988 970 952 933 915 897 878 860 oot 935 90 885 860 835 810 785 760 735 70
64. atic Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required D Mere toram 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other rpms require field supplied drive 57 Table 37 Fan Performance 48TF TM012 Horizontal Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES A 1 Boldface indicates field supplied drive is required n torkan 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 58 Table 38 Fan Performance 48 012 Horizontal Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm NNN To ojo IO TO Steen NuU ROO LEGEND NOTES 1 Boldface indicates field supplied drive is required More toan 2 Maximum continuous bhp is 2 90 3 See page 32 for General Fan Performance Notes Motor drive range 835 to 1085 rpm All other rpms require field
65. ation required to remove contaminants during unoccu pied 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 OA RA Tox 00 To Outdoor Air Temperature OA Percent of Outdoor Air Tr Return Air Temperature RA Percent of Return Air Mixed Air Temperature Once base ventilation has been determined set the mini mum 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 out put of 3 6 volts to the actuator provides a base ventilation rate of 5 and an output of 6 7 volts provides the maximum venti lation rate of 20 or base plus 15 cfm per person Use Fig 39 to determine the maximum setting of the sensor For ample a 1100 ppm set point relates to a 15 cfm per person de sign Use the 1100 ppm curve on Fig 39 to find the point when the sensor output will be 6 7 volts Line up the point on the graph with the left side of the chart to determine that the range configuration for the CO2 sensor should be 1800 ppm The 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 D
66. atisfactory as it is below the maximum r ps llowable 2 Maximum Overcurrent Protection National Electrical Code OFM Outdoor Condenser Fan Motor IMPORTANT If the supply voltage phase imbalance is more than 2 RLA Rated Load Amps contact your local electric utility company immediately The values listed in this table do not include power exhaust See table below for power exhaust requirements TUsed to determine minimum disconnect per NEC Fuse or HACR circuit breaker ttFuse only Data shown in table is for Compressor 1 208 230 3 60 Compressor no 2 RLA is 14 1 amps and LRA is 105 amps 460 3 60 Compressor no 2 RLA is 7 1 amps and LRA is 55 amps 575 3 60 Compressor no 2 RLA is 6 4 amps and LRA is 40 amps 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 2 Use the following formula to determine the percent of volt age imbalance Voltage Imbalance max voltage deviation from average voltage 100 average voltage Example Supply voltage is 460 3 60 452v A B BC 404v 455 v Average Voltage e 221371 3 457 De
67. caps on the ports are tight The Schrader type valve on the discharge line is located under the low pressure switch Another valve is located on the discharge line underneath the high pressure switch It is screwed on a Schrader fitting but there is no Schrader core High Flow Valves Located on the compressor hot gas and suction tubes are High Flow Valves Large black plastic caps distinguish these valves with O rings located inside the caps These valves can not be accessed for service in the field Ensure the plastic caps are in place and tight or the possibility of refrigerant leakage could occur 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 compres sor is rotating in the proper direction 1 Connect service gages to suction and discharge pressure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pres sure should rise as is normal on any start up If the suction pressure does not drop and the discharge pres sure does not rise to normal levels 1 Note that the evaporator fan is probably also rotating in the wrong direction 2 Turn off power to the unit and install lockout tag Reverse any two of the unit power leads Reapply power to unit Reenergize compressor The suction and discharge pressure levels should now move to their normal start up levels
68. ce Notes Motor drive range 860 to 1080 rpm All other rpms require field supplied drive 35 Table 15 Fan Performance 48TM008 Vertical Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required Bnp A torkan 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 590 to 840 rpm All other rpms require field supplied drive 36 Table 16 Fan Performance 48TM008 Vertical Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm 2 18 2032 2 22 2073 2 32 2159 LEGEND NOTES 1 Boldface indicates field supplied drive is required pap un UN E 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 37 Table 17 Fan Performance 48 008 Vertical Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required ES Van Wes MONET tokan 2 Maximum continuous bhp is 3 70 3 See page 32 fo
69. ce must be provided for proper operation of this equipment Be sure that installation complies with all local codes and Section 5 3 Air for Combustion and Ventilation NFGC National Fuel Gas Code ANSI American National Standards Institute Z223 1 latest year and addendum Z223 1 A latest year In Canada installation must be in accordance with the CANI B149 1 and CANI B149 2 installation codes for gas burning appliances HORIZONTAL DRAIN OUTLET NOTE Drain plug is shown in factory installed position Fig 4 Condensate Drain Pan Side View DRAIN PLUG MINIMUM PITCH ONE IN PER FT OF LINE TO ROOF DRAIN DRAIN PLUG NOTE Trap should be deep enough to offset maximum unit static difference A 4 in trap is recommended Fig 5 Condensate Drain Piping Details SECURE ALL SEAL STRIPS PLACE BEFORE POSITIONING UNIT ON ROOF CURB AS CLOSE 36 54 TO THIS END AS POSSIBLE DETAIL A 914 1371 SEE DETAIL DUCT END A NOTES 1 Dimension in is in millimeters 2 Hook rigging shackles through holes in base rail as shown in detail Holes in base rails are centered around the unit cen ter of gravity Use wooden top skid when rigging to prevent rig ging straps from damaging unit 48TF 48TM 3 Weights include base unit without economizer See Tables 1A UNIT SIZE and 1B for economizer weights DIMENSIONS 4131 49 31 49 31 CAUTION All panel
70. ce to use at high altitudes NOTE Upon a call for heat the main burners will remain on for a minimum of 60 seconds ADJUST GAS INPUT The gas input to the unit is deter mined by measuring the gas flow at the meter or by measuring the manifold pressure Manifold pressure should be 3 5 in wg NOTE On units that use a 2 stage gas valve there is no need to adjust the Low Fire manifold pressure Measure Gas Flow Natural Gas Units Minor adjustment to the gas flow can be made by changing the manifold pressure The manifold pressure must be 3 5 in wg Normal manifold pressure is 3 5 in wg in high fire W1 and W2 inputs to gas valve Proceed as follows 1 Turn off gas supply to unit 2 Remove pipe plug on manifold then connect manometer at this point Turn on gas to unit Ensure gas valve is in high fire operation Observe manifold pressure and proceed as follows to adjust gas input 1 Remove cover screw over regulator adjustment screw on gas valve Ensure gas valve is operating in high fire mode 2 Turn regulator adjustment screw clockwise to increase gas input or turn regulator adjustment screw counter clockwise to decrease input High fire manifold pressure must be 3 5 in wg A WARNING Unsafe operation of the unit may result if manifold pres sure is outside 3 4 to 3 6 in wg range Personal injury or unit damage may result 3 Replace cover screw cap on gas valve 4 Turn off gas supply to uni
71. ch flame Proceed as follows to inspect and prepare the unit for initial start up Remove all access panels 2 Read and follow instructions on all WARNING CAU TION and INFORMATION labels attached to or shipped with the 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 connections and on unit base Detecting oil generally indicates a refrigerant leak Leak test all refrigerant tubing con nections using an electronic leak detector halide torch or liquid soap solution c Inspect all field wiring and factory wiring connec tions Be sure that connections are completed and tight d Inspect coil fins If damaged during shipping and han dling carefully straighten the fins with a fin comb 4 Verify the following conditions a Make sure that condenser fan blade is correctly posi tioned in the fan orifice See Condenser Fan Adjust ment section on page 68 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 UP Unit Preparation Make sure that unit has been in stalled in accordance with these installation instructions and applicable codes Make sure that Start Up Checklist located on bac
72. conomizer Temperature Control Example If any of the above conditions are not met the economizer submaster reference ECSR is set to maximum limit and the damper moves to minimum position The operating sequence is complete The ECSR is recalculated every 30 seconds If an optional power exhaust is installed as the outdoor air damper opens and closes the power exhaust fans will be energized and deenergized If field installed accessory CO2 sensors are connected to the PremierLink control a PID controlled demand ventila tion strategy will begin to operate As the CO level in the zone increases above the CO set point the minimum position of the damper will be increased proportionally As the CO level decreases because of the increase in fresh air the outdoor air damper will be proportionally closed HEATING UNIT WITH ECONOMISER2 PREMIERLINK CONTROL AND A ROOM SENSOR Every 40 seconds the controller will calculate the required heat stages maximum of 3 to maintain supply air temperature SAT if the following qualifying conditions are met ndoor fan has been on for at least 30 seconds COOL mode is not active OCCUPIED TEMP COMPENSATED START or HEAT mode is active SAT reading is available Fire shutdown mode is not active If all of the above conditions are met the number of heat stages is calculated otherwise the required number of heat stages will be set to O If the PremierLink controller det
73. ct coil at beginning of heating and cooling seasons 1 Turn unit power off and install lockout tag Remove evap orator coil access panel 67 2 If economizer is installed remove economizer by discon necting Molex plug and removing economizer mounting screws Refer to Accessory Economizer Installation In structions for more details 3 Remove filters from unit 4 Clean coil using a commercial coil cleaner or dishwasher 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 remove foreign materi al Caution should be taken as to not overflow the evapo rator drain condensate pan 5 Flush condensate pan after completion 6 Reinstall economizer and filters 7 Reconnect wiring 8 Replace access panels CONDENSER COIL Inspect coil monthly Clean denser coil annually and as required by location and outdoor air conditions One Row Coils Wash coil with commercial cleaner Clean outer surfaces with a stiff brush in the normal manner It is not necessary to remove top panel 2 Row Coils Clean coil as follows Turn off unit power and tag disconnect 2 Remove top panel screws on condenser end of unit 3 Remove condenser coil corner post See Fig 45 To hold top panel open place coil corner post between top panel and center post See Fig 46 4 Remove screws securing coil to center post 5 Remov
74. ctory 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 POWER EXHAUST ELECTRICAL DATA MOCE 230 v 460 v 575 v POWER EXHAUST for separate PART NO power source CRPWREXH021A01 09 15 CRPWREXH022A01 15 CRPWREXH023A01 18 15 CRPWREXHO24A01 16 0 64 15 CRPWREXH025A01 NA 09 15 CRPWREXH026A01 15 CRPWREXHO277A01 18 15 CRPWREXH028A01 15 CRPWREXHO29A01 NA 1 0 NA 15 CRPWREXHO30A01 1 6 N A 0 64 15 N A Not available NOTE If a single power source is to be used size wire to include power exhaust MCA Check MCA and MOCP when power exhaust is powered through the unit Determine the new MCA including the power exhaust using the following formula MCA New MCA unit only MCA of Power Exhaust For example using a 48 008 unit with MCA 40 1 and MOCP 45 with CRPWREXHO030A01 power exhaust MCA New 40 1 amps 1 6 amps 41 7 amps If the new MCA does not exceed the published MOCP then MOCP would not change The MOCP in this example is 45 amps and the MCA New is below 45 therefore the MOCP is acceptable If MCA New is larger than the pub lished MOCP raise the MOCP to the next larger size For separate power the MOCP for the power exhaust will be 15 amps per NEC C US
75. d 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 To determine the minimum position setting perform the following procedure 1 Calculate the appropriate mixed air temperature using the following formula OA RA Tox 00 gt 007 TM Outdoor Air Temperature OA Percent of Outdoor Air Tr 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 and return air temperature is 75 60 x 10 75 x 90 73 5 2 Disconnect the supply air sensor from terminals T and 3 Ensure that the factory installed jumper is in place across terminals P and P1 If remote damper positioning is being used make sure that the terminals are wired according to Fig 28 and that the minimum position potentiometer is turned fully clockwise 4 Connect 24 vac across terminals TR and 5 Carefully adjust the minimum position potentiometer until the measured supply air temperature matches the calculated value 6 Reconnect the supply air sensor to terminals T and 1 Remote control of the IV damper is desirable when requiring additional tempo
76. dditional information i ROLLOUT SWITCH BURNER 7 0 SECTION L FLUE f EXHAUST AN VESTIBULE oF PLATE 7 INDUCED DRAFT Qs 2 E MANIFOLD 8 Ap o PRESSURE TAP 5 GAS VALVE 3 GAS VALVE 2 FLATS Fig 57 Burner Section Details REGULATOR ADJUSTMENT SCREW LOCATED UNDER METAL PLUG BUTTON MANIFOLD PRESSURE Sosy GAS VALVE DQ nt BURNERS Fig 58 Burner Tray Details 1 8 in 3 2 SPARK GAP 48TFD TMD008 009 125 000 BTUH INPUT SPARK GAP 125 in 3 2 TO 140 in 3 6 1 8 in 3 2 SPARK GAP 48TFD TMD012 48TFE TME008 009 180 000 BTUH INPUT SPARK GAP 142 in 3 6 1 8 in 3 2 SPARK GAP TO 220 in 5 6 _ _ am 48TFD TMDO14 48TFE TMEO12 48 008 009 48TFE TMEO14 48TFF TMFO12 220 000 BTUH INPUT 250 000 BTUH INPUT Fig 59 Spark Gap Adjustment 74 TROUBLESHOOTING Unit Troubleshooting Refer to Tables 44 and 45 and Fig 60 for unit troubleshooting PROBLEM Compressor and Condenser Fan will not Start Compressor will not Start but Condenser Fan Runs Compressor Cycles Other than Normally Satisfying Thermostat Compressor Makes Excessive Noise Scroll Compressors Only Compressor Operates Continuously Excessive Head Pressure Head Pressure Too Low Exc
77. dface indicates field supplied drive is required Bnp toran 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 54 Table 34 Fan Performance 48TF009 Horizontal Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm 2 2 49 2 63 2 78 2 94 3 10 3 27 3 45 3 54 3 64 LEGEND NOTES 1 Boldface indicates field supplied drive is required D Mere toram 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other rpms require field supplied drive 55 Table 35 Fan Performance 48 009 Horizontal Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE pe eee sro GERE wg eue T LEGEND NOTES 1 Boldface indicates field supplied drive is required D toran 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 56 Table 36 Fan Performance 48TM009 Horizontal Discharge Units High St
78. e installed on the unit the hood shipped with the unit will not be used and must be discarded Save the aluminum filter for use in the power exhaust hood assembly 3 indoor coil access panel will be used as the top of the hood Remove the screws along the sides and bottom of the indoor coil access panel See Fig 25 4 Swing out indoor coil access panel and insert the hood sides under the panel hood top Use the screws provided to attach the hood sides to the hood top Use screws pro vided to attach the hood sides to the unit See Fig 26 5 Remove the shipping tape holding the economizer baro metric relief damper in place ES HOOD BOX BRACKET Fig 24 Hood Box Removal SIDE PANEL 69 INDOOR INDOOR COIL ACCESS PANEL HOOD DIVIDER Fig 26 Outdoor Air Hood Construction 23 Insert the hood divider between the hood sides See Fig 26 and 27 Secure hood divider with 2 screws on each hood side The hood divider is also used as the bot tom filter rack for the aluminum filter Open the filter clips which are located underneath the hood top Insert the aluminum filter into the bottom filter rack hood divider Push the filter into position past the open filter clips Close the filter clips to lock the filter into place See Fig 27 Caulk the ends of the joint between the unit top panel and the hood top See Fig 25 Replace the filte
79. e Alt 3 5 3 5 3 5 3 5 Gas Valve Quantity 1 1 1 1 Gas Valve Pressure Range Psig 0 180 0 487 0 180 0 487 0 180 0 487 0 180 0 487 in wg 5 0 13 5 5 0 13 5 5 0 13 5 5 0 13 5 Field Gas Connection Size in 1 2 3 3 1 2 3 3 4 3 4 3 4 3 4 3 4 3 4 HIGH PRESSURE SWITCH psig Standard Compressor 450 50 500 50 Internal Relief Differential Cutout 428 428 Reset Auto 320 320 LOSS OF CHARGE LOW PRESSURE SWITCH psig Cutout 7 3 Reset Auto 22 7 FREEZE PROTECTION THERMOSTAT F Opens 30 5 Closes 45 5 OUTDOOR AIR INLET SCREENS Cleanable Screen size and quantity varies by option selected RETURN AIR FILTERS Throwaway Quantity Size in 4 16 x 20 x2 4 16 x 20 x2 4 20 x 20 x2 4 20 x 20 x2 LEGEND TWeight of 14 in roof curb Rollout switch lockout is manually reset by interrupting power to unit or Al Aluminum Bhp Brake Horsepower resetting thermostat Copper NOTE High static motor not available on size 014 units Evaporator coil fin material condenser coil fin material Contact your local representative for details about coated fins Table 1B Physical Data 48 008 014 48TM UNIT SIZE D E F008 D E F009 D E F012 D E014 NOMINAL CAPACITY 121 OPERATING WEIGHT Ib Unit 1050 Al Cu 1077 Cu Cu 1100 Economizer EconoMi er IV 75 Roof Curbt 143 COMPRESSOR Reciprocating Scroll Scroll Quantity 2 2 2 No Cylinders per Circuit 2 2 Oil oz each compressor 42
80. e fastener holding coil sections together at return end of condenser coil Carefully separate the outer coil section 3 to 4 in from the inner coil section See Fig 47 6 Use a water hose or other suitable equipment to flush down between the 2 coil sections to remove dirt and de bris Clean the outer surfaces with a stiff brush in the nor mal manner 7 Secure inner and outer coil rows together with a field supplied fastener 8 Reposition the outer coil section and remove the coil cor ner post from between the top panel and center post 9 Reinstall the coil corner post and replace all screws CONDENSATE DRAIN Check and clean each year at start of cooling season In winter keep drain dry or protect against freeze up FILTERS Clean or replace at start of each heating and cool ing season or more often if operating conditions require it Re placement filters must be same dimensions as original filters TOP PANEL REMOVE SCREWS CONDENSER FAN CONTROL BOX CORNER POST REMOVE SCREWS POST CONDENSER REMOVE COIL COIL CORNER POST Fig 45 Cleaning Condenser Coil COIL CORNER TOP PANEL POST CENTER BAFFLE CONDENSER COIL Fig 46 Propping Up Top Panel TOP VIEW CONDENSER COIL INNER COIL SECTION CENTER BAFFLE OUTER COIL SECTION RETURN END Fig 47 Separating Coil Sections Lubrication COMPRESSORS Each compressor is charged with the correct amou
81. e plate 8 Slide the burner tray out of the unit Fig 58 9 To reinstall reverse the procedure outlined above CLEANING AND ADJUSTMENT 1 Remove burner rack from unit as described in Removal and Replacement of Gas Train section above 2 Inspect burners if dirty remove burners from rack 3 Using a soft brush clean burners and cross over port as required 4 Adjust spark gap See Fig 59 Reinstall burners on rack 6 Reinstall burner rack as described in Removal and Re placement of Gas Train section this page CA Replacement Parts complete list of replacement parts may be obtained from any Carrier distributor upon request Table 43 LED Error Code Description LED INDICATION ERROR CODE DESCRIPTION ON Normal Operation OFF Hardware Failure 1 Flasht Evaporator Fan On Off Delay Modified 2 Flashes Limit Switch Fault 3 Flashes Flame Sense Fault 4 Flashes 4 Consecutive Limit Switch Faults 5 Flashes Ignition Lockout Fault 6 Flashes Induced Draft Motor Fault 7 Flashes Rollout Switch Fault 8 Flashes Internal Control Fault 9 Flashes Software Lockout LEGEND LED Light Emitting Diode 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 TIndicates a code that is not an error The unit will continue to oper ate when this code is displayed IMPORTANT Refer to Troubleshooting Tables 44 and 45 for a
82. e sure to record the positions of all poten tiometers before starting troubleshooting 1 Disconnect power at TR and TRI LEDs should be off Exhaust fan contacts should be open 2 Disconnect device at P and 3 Jumper P to P1 4 Disconnect wires at T and T1 Place 5 6 kilo ohm resistor across T and 1 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 Sg and 9 Set minimum position DCV set point and exhaust potentiometers fully CCW counterclockwise 10 Set DCV maximum position potentiometer fully CW clockwise 11 Setenthalpy potentiometer to D 12 Apply power 24 vac to terminals TR and TRI DIFFERENTIAL ENTHALPY To check differential enthalpy 1 Make sure IV preparation procedure has been performed 2 Place 620 ohm resistor across So and 3 Place 1 2 kilo ohm resistor across Sg 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 EconoMi er IV settings and wiring to normal after completing troubleshooting SINGLE ENTHALPY To check single enthalpy 1 Make sure IV preparation procedure has been performed 2 Set the enthalpy potentiometer to A fully CCW The Free Cool LED should be lit 3 Set the entha
83. e unit Electrical shock could cause personal injury INSTALLATION Unit is shipped in the vertical discharge configuration To convert to horizontal configuration remove screws from side duct opening covers and remove covers Using the same screws install covers on vertical duct openings with the insula tion side down Seals around duct openings must be tight See Fig 1 Confirm before installation of unit that voltage amperage and circuit protection requirements listed on unit data plate agree with power supply provided Step 1 Provide Unit Support ROOF CURB Assemble and install accessory roof curb in accordance with instructions shipped with curb See Fig 2 In stall insulation cant strips roofing felt and counter flashing as shown Ductwork must be attached to curb gas or electrical connections are to be routed through the curb attach the acces sory thru the curb service connection plate to the roof curb in accordance with the accessory installation instructions Con nections must be installed before unit is set in roof curb IMPORTANT The gasketing of the unit to the roof curb is critical for a watertight seal Install gasket supplied with the roof curb as shown in Fig 2 Improperly applied gasket can also result in air or water leaks and poor unit performance Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligatio
84. emierLink Instal lation Start Up and Configuration Instructions for detailed wiring and configuration information HVAC SENSOR INPUTS SPACE TEMP ea SET POINT _ SUPPLY TEMP ED OUTDOOR TEMP n PremierLink INDOOR AIR QUALITY OUTDOOR AIR QUALITY E DUAL MODE SENSOR STAT REMOTE OCCUPANCY 77 COMP SAFETY Y1 7 4 FIRE SHUTDOWN Y2 SUPPLY FAN STATUS W1 NOT USED W2 ENTHALPY STATUS ENTH Ld CCN LEN NAVIGATOR 4 20MA INDOOR COMPR HEAT EXHAUST PORT PORT ECONOMIZER FANMOTOR 1 amp 2 LOW HIGH RVS VALVE OUTPUTS Fig 17A PremierLink Controller PREMIERLINK CONTROL 0000999 amp 0nnanonnn oo O HINGED DOOR PANEL o PREMIERLINK COVER C Na OO Fig 178 PremierLink Controller Installed 20 APPLICATION Dry Bulb Temperature with PremierLink PremierLink requires 4 20 mA Actuator Differential Dry Bulb Temperature with PremierLink PremierLink requires 4 20 mA Actuator Single Enthalpy with PremierLink PremierLink requires 4 20 mA Actuator Differential Enthalpy with PremierLink PremierLink requires 4 20 mA Actuator Table 3 PremierLink Sensor Usage RETURN AIR TEMPERATURE SENSOR OUTDOOR AIR TEMPER
85. ensions 3 Connector package 3 Leveling tolerances 4 Weight 6 8 Safety considerations Safety relief 65 Service 67 74 Service ports 63 Slab mount 2 Start up 63 67 Start up checklist CL 1 Supply air temperature sensor Thermostat 12 13 29 Troubleshooting 75 79 Ventilation 65 Weight Corner 10 11 6 8 10 11 Unit 5 6 8 10 1 Wiring 4to20mAcontrol 25 Differential enthalpy 22 EconoMi er2 25 24 Power connections PremierLink 21 Thermostat 13 Unit 77 7 9 68 13 64 7 9 68 18 68 63 65 67 19 24 19 21 7 9 7 9 63 27 19 26 Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 1 4 1 Catalog 04 53480015 01 Printed in U S A Form 48T 6SI Pg 80 9 05 Replaces 48 451 START UP CHECKLIST Remove and Store in Job File 1 PRELIMINARY INFORMATION MODEL NO DATE UNIT NO SERIAL TECHNICIAN JOB LOCATION JOB NAME ll PRE START UP insert checkmark in box as each item is completed O VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT REMOVE SHIPPING TIEDOWN BANDS ON COMPRESSOR SIZE 014 ONLY PER INSTALLATION INSTRUCTIONS CHECK GAS PIPING FOR LEAKS START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 COMPRESSOR AMPS 11 COMPRESSOR AMPS 11 INDOOR FAN A
86. entiometer to previous setting 3 Set DCV maximum position potentiometer to previous setting 4 Set minimum position DCV set point and exhaust potentiometers to previous settings 5 Remove 620 ohm resistor from terminals Sg and 6 Remove 1 2 kilo ohm checkout resistor from terminals So and If used reconnect sensor from terminals So and 7 Remove jumper from TR to 10 Remove jumper from P to P1 Reconnect device at P and Remove jumper from TR to 1 9 Remove 5 6 kilo ohm resistor from and Reconnect 11 Apply power 24 vac to terminals TR and TRI wires at T and 1 eo Table 46 IV Input Output Logic INPUTS OUTPUTS Terminalt 5 Cantal EIE sntilation DCV i Ventilation DCV Outdoor Kg Occupied Damper Urocc pied Below set Low caeca Minimum position Closed DCV LED Off reo Cooling LED Off OF Low High Off Modulating between Modulating between Free Cooling LED On mee and full more closed and full open Closed Above set High On On On _ Modulatingtt between min Modulatingtt between DCV LED On Free Cooling LED Off off On Off position and DCV maximum closed and DCV maximum Low On On Off _ Modulating Modulating t single enthalpy control the module compares outdoor Modulation is based on
87. er IV will be in unoccupied mode Demand Controlled Ventilation DCV When using the EconoMiSer 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 cal culated to provide the desired fresh air Typically the maximum ventilation rate will be about 5 to 1096 more than the typical cfm required per person using nor mal outside air design criteria A proportional anticipatory strategy should be taken with the following conditions a zone with a large area varied occu pancy and equipment that cannot exceed the required ventila tion rate at design conditions Exceeding the required ventila tion rate means the equipment can condition air at a maximum ventilation rate that is greater than the required ventilation rate for maximum occupancy A proportional anticipatory strategy will cause the fresh air supplied to increase as the room CO level increases even though the CO set point has not been reached By the time the CO level reaches the set point the damper will be at maximum ventilation and should maintain the set point In order to have the CO sensor control the economizer damper in this manner first determine the damper voltage out put for minimum or base ventilation Base ventilation is the ventil
88. ermines that heat stages are required the economizer damper will be moved to minimum position if occupied and closed if unoccupied Staging should be as follows If Heating PID STAGES 2 e HEAT STAGES 1 50 capacity will energize HS1 HEAT STAGES 100 capacity will energize HS2 If Heating PID STAGES 3 and AUXOUT HS3 HEAT STAGES 1 33 capacity will energize HS1 HEAT STAGES 2 66 capacity will energize HS2 HEAT STAGES 3 100 capacity will energize HS3 In order to prevent short cycling the unit is locked into the Heating mode for at least 10 minutes when HS1 is deenergized When HS1 is energized the induced draft motor is then energized and the burner ignition sequence begins On units equipped for two stages of heat when additional heat is need ed HS2 is energized and the high fire solenoid on the main gas valve MGV is energized When the space condition is satis fied and 1 is deenergized the stops after a 45 second time off delay unless in the occupied mode The fan will run continuously in the occupied mode as required by national energy and fresh air standards SERVICE A CAUTION When servicing unit shut off all electrical power to unit and tag disconnect to avoid shock hazard or injury from rotating parts Cleaning Inspect unit interior at the beginning of each heating and cooling season or more frequently as operating conditions require EVAPORATOR COIL Clean coil as required Inspe
89. essive Suction Pressure Suction Pressure Too Low Compressor No 2 will not Run CAUSE Power failure Fuse blown or circuit breaker tripped Defective thermostat contactor trans former or control relay Insufficient line voltage Incorrect or faulty wiring Thermostat setting too high Faulty wiring or loose connections in com pressor circuit Compressor motor burned out seized or internal overload open Defective run start capacitor overload or start relay One leg of 3 phase power dead Refrigerant overcharge or undercharge Defective compressor Insufficient line voltage Blocked condenser Defective run start capacitor overload or start relay Defective thermostat Faulty condenser fan motor or capacitor Restriction in refrigerant system Compressor rotating in wrong direction Dirty air filter Unit undersized for load Thermostat set too low Low refrigerant charge Leaking valves in compressor Air in system Condenser coil dirty or restricted Dirty air filter Dirty condenser coil Refrigerant overcharged Air in system Condenser air restricted or air short cycling Low refrigerant charge Compressor valves leaking Restriction in liquid tube High heat load Compressor valves leaking Refrigerant overcharged Dirty air filter Low refrigerant charge Metering device or low side restricted Insufficient evaporator airflow Temperature too low in condit
90. external manual gas shutoff valve NOTE If field installed thru the bottom connections are used refer to the accessory installation instructions for power wiring and gas connections Refer to Fig 7A and 7B for drilling holes in basepan Step 7 Make Electrical Connections A WARNING Unit cabinet must have an uninterrupted unbroken electri cal ground to minimize the possibility of personal injury if an electrical fault should occur This ground may consist of electrical wire connected to unit ground lug in control com partment or conduit approved for electrical ground when installed in accordance with NEC National Electrical Code ANSI NFPA National Fire Protection Associa tion latest edition and local electrical codes Do not use gas piping as an electrical ground Failure to follow this warning could result in the installer being liable for per sonal injury of others FLUE HOOD 2 29 HOOD SHIPPING POSITION BEHIND PANEL Fig 8 Flue Hood Details ee 9 MINIMUM CLEARANCE FOR PANEL REMOVAL MANUALGAS GAS i SHUTOFF VALVE REGULATOR DRIP LEG NFGC BASE UNIT BASE RAIL ROOF CURB FIELD FABRICATED SUPPORT FROM GAS METER LEGEND SPACING OF SUPPORTS 42 STEEL PIPE X ield supplied NOMINAL NOTE Follow all local codes rd ES In 1 2 6
91. f hood with the 6 screws removed in Step 3 See Fig 15 Remove and save 6 screws 3 on each side from sides of the manual outdoor air damper Align screw holes on hood with screw holes on side of manual outdoor air damper See Fig 14 and 15 Secure hood with 6 screws from Step 6 Adjust minimum position setting of the damper blade by adjusting the manual outdoor air adjustment screws on the front of the damper blade See Fig 13 Slide blade vertically until it is in the appropriate position determined by Fig 16 Tighten screws Remove and save screws currently on sides of hood Insert screens Secure screens to hood using the screws See Fig 15 10 Replace filter access panel Ensure filter access panel slides along the tracks and is securely engaged OUTDOOR AIR OPENING PANEL 3 SCREWS 9 SIDE MANUAL OUTDOOR AIR ADJUSTMENT SCREWS 18 e TO SETTING DAMPER BLADE Fig 13 ro Panel with Manual Outdoor Air Damper Installed HOOD SCREWS HIDDEN SCREWS SCREEN HOLDERS HOOD SIDES AND TOP ASSEMBLED SCREW HOLES TOP HOOD HOOD SCREEN LOCATION Fig 15 Optional Manual Outdoor Air Damper with Hood Attached NEGATIVE PRESSURE in OUTDOOR A
92. for this type of measurement CAUTION When evaluating the refrigerant charge an indicated adjustment to the specified factory charge must always be very minimal If a substantial adjustment is indicated an abnormal condition exists somewhere in the cooling sys tem such as insufficient airflow across either coil or both coils Proceed as follows 1 Remove caps from low pressure and high pressure Schrader valve fittings 2 Using hoses with valve core depressors attach low and high pressure gage hoses to low pressure and high pressure service fittings respectively 3 Start unit in Cooling mode and let unit run until system pressure stabilize 4 Measure and record the following Outdoor ambient air temperature F db b Evaporator inlet air temperature F wb Suction tube temperature F at low side service fitting d Suction low side pressure psig 5 Using Cooling Charging Charts compare outdoor air temperature F db with the suction line pressure psig to determine desired system operating suction line tempera ture See Fig 49 56 6 Compare measured suction tube temperature with de sired suction tube temperature Using a tolerance of 3 add refrigerant if measured temperature is more than 3 F higher than proper suction tube temperature or remove refrigerant if actual temperature is more than 3 F lower than required suction tube temperature TO USE COOLING CHARGING
93. g harness See Fig 28 The outdoor en thalpy changeover set point is set with the outdoor enthalpy set point potentiometer on the EconoMi er IV controller When using this mode of changeover control turn the enthalpy set point potentiometer fully clockwise to the D setting Indoor Air Quality Sensor Input The IAQ input can be used for demand control ventilation control based on the level of CO 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 terminals of the controller Adjust the DCV potentiome ters to correspond to the DCV voltage output of the indoor air quality sensor at the user determined set point See Fig 39 If a separate field supplied transformer is used to power the IAQ sensor the sensor must not be grounded or the IV control board will be damaged 41 1000 ppm 1100 ppm 800 ppm 900 ppm HIGH LIMIT CURVE 43 2 Sensor Maximum Range Setting CO2 SENSOR MAX RANGE SETTING 8 39NVH 5 DAMPER VOLTAGE FOR MAX VENTILATION RATE Fig 39 1000 Fig 37 Enthalpy Changeover Set Points APPROXIMATE DRY BULB TEMPERATURE F C
94. halpy 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 OPTIONAL ECONOMISER IV AND ECONOMI ER2 See Fig 21 for EconoMi er IV component locations See Fig 22 for EconoMi er2 component locations NOTE These instructions are for installing the optional IV and 2 only Refer to the accessory IV or EconoMi er2 installation instructions when field installing an EconoMiS er IV or EconoMi er2 accessory 1 To remove the existing unit filter access panel raise the panel and swing the bottom outward The panel is now disengaged from the track and can be removed See Fig 23 ENTHALPY CONTROLLER 15 OUTDOOR AIR ENTHALPY SENSOR LS RETURN AIR ENTHALPY SENSOR WIRE HARNESS IN UNIT GRAY RED Remove factory installed jumper across SR and before con necting wires from return air sensor 2 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 out side airstream Fig 19 Outside and Return Air Sensor Wiring Connections for Differential Enthalpy Control 57 077 ENTHALPY CONTROL AND OUTDOOR AIR ENTHALPY SENSOR BRACKET
95. inimum disconnect per NEC 1 use HACR circuit breaker use only Data shown in table is for Compressor 1 2 08 230 3 60 Compressor no 2 RLA is 14 1 amps and LRA is 105 amps 460 3 60 Compressor no 2 RLA is 7 1 amps and LRA is 55 amps 575 3 60 Compressor no 2 RLA is 6 4 amps and LRA is 40 amps 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 2 Use the following formula to determine the percent of volt age imbalance 96 Voltage Imbalance max voltage deviation from average voltage 50100x average voltage Example Supply voltage is 460 3 60 AB 452 v B BC 464v 455 v Average Voltage A _ 1371 3 457 Determine maximum deviation from average voltage AB 457 452 25v BC 464 457 27 v 457 455 2 15 99 07 3 99 77 325 325 869 369 164 138 137 221 30 155 311 311 330 330 378 378 30 25 154 07 3 193 187 109 3 idi 136 387 387 410 410 194 205 156 165 Maximum deviation is 7 Determine percent of voltage imbalance Voltage Imbalance 100 x a 1 53 This am
96. inuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 590 to 840 rpm All other rpms require field supplied drive 51 Table 31 Fan Performance 48 008 Horizontal Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES mE 1 Boldface indicates field supplied drive is required MONET tokan 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 52 Table 32 Fan Performance 48TM008 Horizontal Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required 51 UNE DOMO E 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other rpms require field supplied drive 53 Table 33 Fan Performance 48TF009 Horizontal Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Bol
97. ioned area Field installed filter drier restricted Unit in economizer mode Table 44 Cooling Service Troubleshooting REMEDY Call power company Replace fuse or reset circuit breaker Replace component Determine cause and correct Check wiring diagram and rewire correctly Lower thermostat setting below room temperature Check wiring and repair or replace Determine cause Replace compressor Determine cause and replace Replace fuse or reset circuit breaker Determine cause Recover refrigerant evacuate system and recharge to nameplate Replace and determine cause Determine cause and correct Determine cause and correct Determine cause and replace Replace thermostat Replace Locate restriction and remove Reverse the 3 phase power leads as described on page 63 Replace filter Decrease load or increase unit size Reset thermostat Locate leak repair and recharge Replace compressor Recover refrigerant evacuate system and recharge Clean coil or remove restriction Replace filter Clean coil Remove excess refrigerant Recover refrigerant evacuate system and recharge Determine cause and correct Check for leaks repair and recharge Replace compressor Remove restriction Check for source and eliminate Replace compressor Recover excess refrigerant Replace filter Check for leaks repair and recharge Remove source of restriction Increase air quantit
98. itional information 32 Table 12 Fan Performance 48 008 Vertical Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm 2250 2300 2400 2500 2550 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 3750 LEGEND NOTES 1 Boldface indicates field supplied drive is required Bap ii 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 590 to 840 rpm All other rpms require field supplied drive 33 Table 13 Fan Performance 48 008 Vertical Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required Bap en WS D MONET to pan 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 34 Table 14 Fan Performance 48 008 Vertical Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required 51 Owe E E 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performan
99. k page of this booklet has been completed and filled out 63 Return Air Filters Make sure correct filters are in stalled in filter tracks see Tables 1 and 1B Do not operate unit without return air filters Outdoor Air Inlet Screens Outdoor air inlet screens must be in place before operating unit Compressor Mounting Compressors are internally spring mounted Do not loosen or remove compressor hold down bolts On 48TETMO14 units remove the tiedown bands that hold the compressors together Internal Wiring Check all electrical connections in unit control boxes Tighten as required Ensure wiring does not come into direct contact with refrigerant tubing Gas Piping Check gas piping for leaks WARNING Disconnect gas piping from unit when leak testing at pressure greater than psig Pres sures greater than 2 psig will cause gas valve damage resulting in hazardous condi tion 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 Refrigerant Service Ports To service refrigerant service ports remove compressor access panel Each unit sys tem has 3 Schrader type service gage ports one on the suction line one on the liquid line and one on the compressor dis charge line Be sure that
100. led based on Y1 and Y2 using minimum on and off times and watching the sup ply air temperature as compared to SATLOI and SATLO 2 set points If optional power exhaust is installed as the outdoor air damper opens and closes the power exhaust fans will be ener gized and deenergized If field installed accessory CO sensors are connected to the PremierLink control a PID controlled demand ventilation strategy will begin to operate As the level in the zone increases above the CO set point the minimum position of the damper will be increased proportionally As the CO level decreases because of the increase in fresh air the outdoor air damper will be proportionally closed HEATING UNITS WITH ECONOMIS ER2 PREMIERLINK CONTROL AND A THERMOSTAT When the thermostat calls for heating terminal W1 is energized The PremierLink control will move the economizer damper to the minimum position if there is a call for G and closed if there is a call for W1 without G In order to prevent thermostat from short cy cling the unit is locked into the heating mode for at least 10 minutes when W1 is energized The induced draft motor is then energized and the burner ignition sequence begins 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 IPM stops after a 45 second time
101. ll be 15 amps per NEC Table 2 Electrical Data 48TM Units Without Convenience Outlet 48TM NOMINAL irm COMPR OFM COMBUSTION power SUPPLy DISCONNECT UNITSIZE VOLTAGE PANCE SIZEt min awf RLA f LRA ee FLA LRA A 208 230 3 60 arl At 187 254 1 4 10 6 6 71 s Tons 460 3 60 E Al 414 508 0 7 3 High 575 3 60 518 632 0 7 3 m 272072 105 316 316 Tons 444 50 ge pes Z 5 __ _ 2 30 12417171 LIS 2505223050 MERE 229225 229 229 2730273 108 108 130 97 97 114 149 167 7 109 18s 25 19 126 RR 44 6446 50 50 47 47 297 297 208 230 3 60 Alt 187 254 125 0 1 4 46 3 46 3 60 60 49 49 316 316 115 07 53 4 53 4 60 60 57 57 374 374 460 3 60 Alt 414 508 107 mm 632 2 6 3 500 2 H E BR ae a sse eges idi id 575 3 60 208 230 3 60 014 121 2 Tons 4803 60 LEGEND FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration Indoor Evaporator Fan Motor LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection NEC National Electrical Code OFM Outdoor Condenser Fan Motor RLA Rated Load Amps The values listed in this table do not include power exhaust See table below for
102. lpy a call for cooling Y1 closes at the thermostat will cause the control to modulate the dampers open to maintain the supply air temperature set point at 50 to 55 F As the supply air temperature drops below the set point range of 50 to 55 F the control will modulate the outdoor air dampers closed to maintain the proper supply air temperature HEATING UNITS WITH ECONOMISER IV When the room temperature calls for heat the heating controls are ener gized as described in the Heating Units Without Economizer section When the thermostat is satisfied the economizer damper moves to the minimum position COOLING UNITS WITH ECONOMISER2 PREMIER LINK CONTROL AND A THERMOSTAT When free cooling is not available the compressors will be controlled by the PremierLink control in response to the Y1 and Y2 inputs from the thermostat The PremierLink control will use the following information to determine if free cooling is available Indoor fan has been on for at least 30 seconds The SPT SAT and OAT inputs must have valid readings OAT must be less than 75 F OAT must be less than SPT Enthalpy must be LOW may be jumpered if an enthalpy sensor not available Economizer position is NOT forced Pre cooling occurs when the is no call from the thermostat except G Pre cooling is defined as the economizer modulates to provide 70 F supply air When free cooling is available the PremierLink control will control the comp
103. lpy potentiometer to D fully CW The Free Cool LED should turn off 4 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 IV preparation procedure has been performed 2 Ensure terminals AQ and AQI are open The LED for both DCV and Exhaust should be off The actuator should be fully closed 78 3 Connect 9 v battery to AQ positive node and 1 negative node The LED for both DCV and Exhaust should turn on The actuator should drive to between 90 and 95 open 4 Turn the Exhaust potentiometer CW until the Exhaust LED turns off The LED should turn off when the potentiometer is approximately 9096 The actuator should remain in position 5 Turn the DCV set point potentiometer CW until the DCV LED turns off The DCV LED should turn off when the potentiometer is approximately 9 v The actuator should drive fully closed 6 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 7 Return 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 9 v battery to AQ positive
104. m continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 590 to 840 rpm All other rpms require field supplied drive 48 Table 28 Fan Performance 48 008 Horizontal Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required pap un UNA E toran 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 49 Table 29 Fan Performance 48 008 Horizontal Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required Bnp E Vidi Wes MONET toran 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other rpms require field supplied drive 50 Table 30 Fan Performance 48 008 Horizontal Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required 5 2 Maximum cont
105. mierLink control See Fig 29 for wiring information Determine EconoMi er IV control mode before set up of the control Some modes of operation may require different sen sors Refer to Table 5 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 Table 5 EconoMi er IV Sensor Usage ECONOMISER IV WITH OUTDOOR AIR APPLICATION DRY BULB SENSOR Accessories Required Outdoor Air None The outdoor air dry bulb sensor Dry Bulb is factory installed Differential Dry Bulb CRTEMPSNO02A00 Single Enthalpy 57 078 Differential iari 078 Enthalpy CRENTDIF004A00 for DCV Control using Wall Mounted S32CSENCO2 CO Sensor CO for DCV Control using a S32CSENCO T Duct Mounted Sensor CRENTDIF004A00 and CRTEMPSNO002A00 accessories are used on many different base units As such these kits may contain parts that will not be needed for installation 33ZCSENCO2 is an accessory CO sensor 33ZCASPCO2 is an accessory aspirator box required for duct mounted applications TTCRCBDIOXO005A00 is an accessory that contains both 33ZCSENCO2 and 33ZCASPCO2 accessories CRCBDIOXO05A00tt and 332 2
106. n using this mode of changeover control turn the enthalpy setpoint potentiometer fully clockwise to the D setting See Fig 34 EXHAUST FAN SET POINT n EXH LED LIGHTS lies ed WHEN EXHAUST 1 w m P1 EXH MINIMUM DAMPER l POSITION SETTING 2 D MAXIMUM DAMPER z Open DEMAND CONTROL VENTILATION SET POINT Mi LED LIGHTS WHEN DEMAND CONTROL VENTILATION INPUT O IS ABOVE SET POINT aali E mOr DEMAND CONTROL VENTILATION SET POINT SR Ex LED LIGHTS WHEN OUTDOOR AIR IS SUITABLE FOR FREE COOLING ENTHALPY CHANGEOVER SET POINT Fig 34 IV Controller Potentiometer and LED Locations LED ON 14 LED OFF eS 12 LED LED ON 19 LED OFF 97 40 45 50 55 60 65 70 75 80 85 90 95 100 DEGREES FAHRENHEIT Fig 35 Outside Air Temperature Changeover Set Points ECONOMISER IV CONTROLLER ECONOMISER IV A GROMMET RETURN AIR SENSOR RETURN DUCT FIELD PROVIDED Fig 36 Return Air Temperature or Enthalpy Sensor Mounting Location 27 Outdoor Enthalpy Changeover For enthalpy control cessory enthalpy senso
107. ndicates field supplied drive is required Bip MGE EMO to an 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 41 Table 21 Fan Performance 48 009 Vertical Discharge Units High Static Motor Belt EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required D 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other roms require field supplied drive 42 Table 22 Fan Performance 48TF TM012 Vertical Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES mE 1 Boldface indicates field supplied drive is required 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 43 Table 23 Fan Performance 48 012 Vertical Discharge Units Alternate Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg
108. ns 1 4 Catalog 04 53480015 01 Tab 1 Printed in U S A Form 487 651 Pg 1 9 05 Replaces 48T 4SI Curb should be level Unit leveling tolerances are shown Fig 3 This is necessary for unit drain to function properly Re fer to Accessory Roof Curb Installation Instructions for addi tional information as required If gas or electrical connections are to be routed through the bottom of the unit attach accessory thru the bottom service connections to the basepan in accordance with the accessory installation instructions ALTERNATE UNIT SUPPORT When the curb or adapter cannot be used support unit with sleepers using unit curb or adapter support area If sleepers cannot be used support long sides of unit with a minimum of three 4 in x 4 in pads 2 at the corners and one at the unit s center of gravity If more than 3 pads are used equally space the pads along the sides of the unit SLAB MOUNT Horizontal Units Only Provide a level concrete slab that extends a minimum of 6 in beyond unit cab inet Install a 6 in gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow NOTE Horizontal units may be installed on a roof curb if required Step 2 Field Fabricate Ductwork 5 all ducts to roof curb and building structure on vertical units Do not connect ductwork to unit For horizontal applications field supplied flanges should be
109. nt of oil at the factory FAN MOTOR BEARINGS Fan motor bearings are of the permanently lubricated type No further lubrication is required No lubrication of condenser fan or evaporator fan motors is required Condenser Fan Adjustment Fig 48 1 Shut off unit power supply and tag disconnect 2 Remove condenser fan assembly grille motor motor cover and fan and loosen fan hub setscrews 3 Adjust fan height as shown in Fig 48 4 Tighten setscrews and replace condenser fan assembly 48TF TM UNIT VOLTAGE 208 230 V 2 75 460 V and 575 V 3 50 Fig 48 Condenser Fan Adjustment FAN HEIGHT A in 68 Blower Belt Adjustment Inspect blower belt for wear proper belt tension and pulley alignment as conditions require or at the beginning of each heating and air conditioning season Refer to Step 9 Adjust Evaporator Fan Speed on page 30 for adjustment and alignment procedures Manual Outdoor Air Damper If outdoor air damp er blade is required see Manual Outdoor Air Damper section on page 18 Economizer Adjustment Refer to the Optional EconoMi er IV EconoMi er2 section on page 22 Condenser Coil Grille Condenser coil grille is shipped factory installed No adjustments are required High Pressure Switch Located on the compressor hot gas line is a high pressure switch This switch opens at 428 psig and closes at 320 p
110. o inspect the heat exchanger 3 Clean all surfaces as required using a wire brush Combustion Air Blower Clean seasonally to assure proper airflow and heating efficiency Inspect blower wheel ev ery fall and periodically during heating season For the first heating season inspect blower wheel bimonthly to determine proper cleaning frequency To inspect blower wheel shine a flashlight into draft hood opening If cleaning is required remove motor and wheel as follows 1 Slide burner access panel out 2 Remove the 6 screws that attach induced draft motor housing to vestibule plate Fig 57 3 The blower wheel can be cleaned at this point If addi tional cleaning is required continue with Steps 4 and 5 4 To remove blower from the motor shaft remove 2 set screws 5 To remove motor remove the 4 screws that hold blower housing to mounting plate Remove the motor cooling fan by removing one setscrew Then remove nuts that hold motor to mounting plate 6 To reinstall reverse the procedure outlined above Limit Switch Remove blower access panel Fig 7A and 7B Limit switch is located on the fan deck Verify opera tion of limit by temporarily blocking return air until limit trips Burner Ignition Unit is equipped with a direct spark ignition 100 lockout system Integrated Gas Unit Controller IGC is located in the control box Fig 12 Module contains a self diagnostic LED A single LED on the IGC provides a
111. o much outdoor air Incomplete combustion lack of combustion air results in Aldehyde odors CO sooting flame or floating flame Unit is locked into Heating mode for a one minute minimum 76 Use high speed tap increase fan speed or install op tional blower as suitable for individual units Check rotation of blower thermostat heat anticipator set tings and temperature rise of unit Adjust as needed Adjust minimum position Check economizer operation Check all screws around flue outlets and burner com partment 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 Wait until mandatory one minute time period has elapsed or power to unit 2 RED C2 CIRCUIT MUST YEL HG3 88N BRN COMP 2 BREAKER VOLTS MFG PT NO YH 24V POTTER amp BRUMFIELD 5 08 ORN W28X 1024 3 2 3 2 BLK BLK om YEL OFM H BRN OFG BRN YEL ak DK BLK BLK EQUIP GND OFC evo YEL lt YEL OFM X n CNTDAHZD amp k YEL Wu ye ve XT HED ve YEL COMP 1 YEL SEE NOTE 3 Lorn BLU r 1 VIO PNK YEL BLU BLK BRN RED GRA ORN PNK 5 ose 2 4 2 i DAG
112. off delay unless G is still maintained COOLING UNITS WITH ECONOMISER2 PREMIER LINK CONTROL AND A ROOM SENSOR When free cooling is not available the compressors will be controlled by the PremierLink controller using a PID Error reduction calcula tion as indicated by Fig 43 The PremierLink controller will use the following informa tion to determine if free cooling is available Indoor fan has been on for at least 30 seconds The SPT SAT and OAT inputs must have valid readings OAT must be less than 75 F OAT must be less than SPT Enthalpy must be LOW may be jumpered if and enthalpy sensor is not available Economizer position is NOT forced When free cooling is available the outdoor air damper is positioned through the use of a Proportional Integral PID control process to provide a calculated supply air temperature into the zone The supply air will maintain the space tempera ture between the heating and cooling set points as indicated in Fig 44 The PremierLink will integrate the compressors stages with the economizer based on similar logic as the three routines list ed in the previous section The SASP will float up and down based on the error reduction calculations that compare space temperature and space set point When outdoor air temperature conditions require the econo mizer to close for a compressor stage up sequence the econo mizer control integrator is reset to zero after the stage up se
113. or Without Economizer or Two Position Damper 1 2 wD sFs i NOTUSED CC C CX Fig 11B Low Voltage Connections Units with PremierLink Controls Table 2 Electrical Data 48TF Units Without Convenience Outlet COMBUSTION 48TF NOMINAL IFM OFM moror SUPPLY DER T rale cae Min RCA CRA Gy He FLA __ MOCP LRA Std 40 1 40 1 45 45 42 42 229 229 208 230 3 60 187 14 40 1 40 1 45 45 42 42 229 229 High 6 44 9 44 9 50 50 48 48 273 273 E 108 460 3 60 414 07 108 130 97 575 3 60 518 07 97 gr 114 44 6 44 6 50 50 47 47 321 321 High High ic B 1370 0 6 49 4 49 4 60 60 52 52 365 365 395 ee 162 81 2 Tons High 184 s518 6 2 64 s80 07 135 High 152 Lu 50 50 46 46 307 307 208 230 3 60 187 130 0 1 4 45 9 45 9 50 50 48 48 326 326 E 53 4 53 4 60 60 57 57 374 374 jiz a 152 10 460360 07 3 191 gr 266 30 28 185 EJ 5 19 123 575 3 60 518 07 155 219 23 150 Std 106 6 65 2 65 2 80 8011 68 68 383 383 20820290 EI Bee 69 6 69 6 80 8014 73 73 406 406 Std e Era 296 40 31 192 20 Tons 450 3
114. ount of phase imbalance is satisfactory as it is below the maximum allowable 2 IMPORTANT If the supply voltage phase imbalance is more than 2 con tact your local electric utility company immediately POWER EXHAUST ELECTRICAL DATA POWEREXHAUST MCA MCA MCA 230v 675v Separate CRPWREXHO21A001 N A 09 15 CRPWREXHO22A01 33 132 15 23 01 15 CRPWREXHO24A01 16 064 15 CRPWREXHO25A01 N A 09 15 26 01 15 CRPWREXHO027A01 15 CRPWREXHO28A01 17 068 15 CRPWREXHO29A01 N A 10 15 CRPWREXHO030A01 15 N A Not available NOTE If single power source is to be used size wire to include power exhaust and Check MCA and MOCP when power exhaust is powered through the unit Determine the new MCA including the power exhaust using the following formula MCA New MCA unit only MCA of Power Exhaust For example using a 48 008 unit with MCA 40 1 and MOCP 45 with CRPWREXHO030A01 power exhaust MCA New 40 1 amps 1 6 amps 41 7 amps If the new MCA does not exceed the published MOCP then MOCP would not change The MOCP in this example is 45 amps and the MCA New is below 45 therefore the is acceptable If MCA New is larger than the pub lished MOCP raise the MOCP to the next larger size For separate power the MOCP for the power exhaust wi
115. per NOTE High static motor not available on size 014 units Evaporator coil fin material condenser coil fin material Contact your local representative for details about coated fins 710 800 487 6 INOS 1 5 30 02 015 d 3013 Adddns wo1v000 12302502 JAIS 1 31 3915 LHSIY S30V1d dAD 1 21812313 dA 89 2510 431734 2191 3 0 1051 9 1 2 0 91 4 8 0 69 51015 xonul 9r 11 18 2 G v 9111 Ore Le 161 S 0 291 6 0 gt i 30151010 TV 1NOZ LHOH SNIN3dO AlddNS LINN 30 01108 N TaNvd 55322 TANYd 55422 483 018 8055384 02 80104 000 1 X08 1081905 WLNOZ 180H 401 Vary TER 3014 71109 u3SN3QNO2 03179905 AYOLOVA 1 4 7 Y 26 553999 Y31714 0 LE JS 2817 100 3903 AldaNS 15 VIG 2 eas aaa Ze 8 6 47 0 21033187 910 3 21030 18 por RIPE B E 4 122017 600 3 00335187 NO1193NNOO 599 1dN rl v E 4 838 TRONO23 v 600 3 8000318 SYO 19 pl Z 802 011 NIVHO 3195439409 71 573 T 191 6 8 0 t l 8 9NIHIM 1081802 01313 1221 VIG 8 7 0 100701 0
116. power exhaust requirements TUsed to determine minimum disconnect per NEC Fuse or HACR circuit breaker ttFuse only Data shown in table is for Compressor no 1 208 230 3 60 Compressor no 2 RLA is 14 1 amps and LRA is 105 amps 460 3 60 Compressor no 2 RLA is 7 1 amps and LRA is 55 amps 575 3 60 Compressor no 2 RLA is 6 4 amps and LRA is 40 amps 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 2 Use the following formula to determine the percent of volt age imbalance Voltage Imbalance max voltage deviation from average voltage z 190X average voltage Example Supply voltage is 460 3 60 A B C 452v 464 455v Average Voltage ae _ 137 3 457 Determine maximum deviation from average voltage 457 452 2 5v 464 457 7 v 457 455 2 Maximum deviation is 7 16 188 3 191 182 119 07 eo 19 i5 146 Hae 359 359 3781378 265 28 i74 291 35 215 127 159 Determine percent of voltage imbalance 7 Voltage Imbalance 100 457 1 53 This amount of phase imbalance is satisfa
117. quence is completed This prevents the supply air temperature from dropping too quickly and creating a freeze condition that would make the compressor turn off prematurely The high space set point is used for DX direct expansion cooling control while the economizer space set point is a calculated value between the heating and cooling set points The economizer set point will always be at least one degree below the cooling set point allowing for a smooth transition from mechanical cooling with economizer assist back to economizer cooling as the cooling set point is achieved The compressors may be used for initial cooling then the PremierLink controller will modulate the economizer using an error reduction calculation to hold the space temperature between the heating and cooling set points See Fig 44 The controller uses the following conditions to determine economizer cooling Enthalpy is Low SAT reading is available OAT reading is available SPT reading is available lt SPT Economizer Position is NOT forced TEMPERATURE CONTROL M SET POINT TEMPERATURE SPACE TEMPERATURE TIME NOTE PremierLink control performs smart staging of 2 stages of DX cooling and up to 3 stages of heat Fig 43 DX Cooling Temperature Control Example TEMPERATURE CONTROL mE COOL SETPOINT TEMPERATURE HEAT SETPOINT SPACE TEMPERATURE TIME Fig 44 E
118. r part number 57 74 is re quired Replace the standard outdoor dry bulb temperature sen sor with the accessory enthalpy sensor in the same mounting location See Fig 21 When the outdoor air enthalpy rises above the outdoor enthalpy changeover set point the outdoor air damper moves to its minimum position The outdoor enthalpy changeover set point is set with the outdoor enthalpy set point potentiometer on the EconoMi er IV controller The set points are A B C and D See Fig 37 The factory installed 620 ohm jumper must be in place across terminals SR and SR on the IV controller See Fig 21 and 38 Differential Enthalpy Control For differential enthalpy control the EconoMi er IV controller uses two enthalpy sen sors 57 078 and CRENTDIF004A00 one in the out side air and one in the return air duct The EconoMi er IV controller compares the outdoor air enthalpy to 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 sen sor with the accessory enthalpy sensor in the same mounting location See Fig 21 Mount the return air enthalpy sensor in the return air duct See Fig 36 Wiring is provided in the EconoMiSer IV wirin
119. r 20 AWG cable to connect the enthalpy control to the PremierLink controller and power transformer 2 Connect the following 4 wires from the wire harness located in rooftop unit to the enthalpy controller a Connect the BRN wire to the 24 vac terminal TR1 on enthalpy control and to pin 1 on 12 pin harness b Connect the RED wire to the 24 vac GND terminal TR on enthalpy sensor and to pin 4 on 12 pin harness c Connect the GRAY ORN wire to J4 2 on Premier Link controller and to terminal 3 on enthalpy sensor d Connect the GRAY RED wire to J4 1 on Premier Link controller and to terminal 2 on enthalpy sensor NOTE If installing in a Carrier rooftop use the two gray wires provided from the control section to the economizer to connect PremierLink controller to terminals 2 and 3 on enthalpy sensor Return Air Enthalpy Sensor Mount the return air enthalpy sensor 57 078 in the return air duct The return air sensor is wired to the enthalpy controller HH57ACO077 The outdoor enthalpy changeover set point is set at the controller To wire the return air enthalpy sensor perform the follow ing see Fig 19 Use a 2 conductor 18 or 20 AWG twisted pair cable to connect the return air enthalpy sensor to the enthalpy 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 ent
120. r General Fan Performance Notes Motor drive range 860 to 1080 rpm All other rpms require field supplied drive 38 Table 18 Fan Performance 48TF009 Vertical Discharge Units Standard Motor Belt EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required D GRE to an 2 Maximum continuous bhp is 2 40 3 See page 32 for General Fan Performance Notes Motor drive range 685 to 935 rpm All other rpms require field supplied drive 39 Table 19 Fan Performance 48TF009 Vertical Discharge Units High Static Motor Belt Drive EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface indicates field supplied drive is required D 2 Maximum continuous bhp is 3 70 3 See page 32 for General Fan Performance Notes Motor drive range 860 to 1080 rpm All other roms require field supplied drive 40 Table 20 Fan Performance 48TM009 Vertical Discharge Units Standard Motor Belt Drive EXTERNAL STATIC PRESSURE in wg EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm LEGEND NOTES 1 Boldface i
121. r access panel Install all EconoMi er IV accessories EconoMi er IV wiring is shown in Fig 28 EconoMi er2 wiring is shown in Fig 29 Barometric flow capacity is shown in Fig 30 Outdoor air leakage is shown in Fig 31 Return air pressure drop is shown in Fig 32 ECONOMISER IV STANDARD SENSORS Outdoor Air Temperature OAT Sensor The outdoor air temperature sensor 57 074 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 IV in the outdoor airstream See Fig 21 The operating range of temperature measurement is 40 to 100 F 9 10 17 1 4 DIVIDER OUTSIDE AIR x ALUMINUM FILTER RELIEF FILTER CLIP Fig 27 Filter Installation FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD SUPPLIED TIME CLOCK PNK VIO BLK Ds Ip ECONOMIZER MOTOR FIELD m ACCESSORY 9 8LK o 1 REMOTE MIN WHT o3 POSITION POT BLK av 10V IREWOTE 71
122. r horizontal applications When using the standard side drain connection make sure the plug Red in the alternate bottom connection is tight before installing the unit To use the bottom drain connection for a roof curb installa tion relocate the factory installed plug Red from the bottom connection to the side connection See Fig 4 The piping for the condensate drain and external trap can be completed after the unit is in place See Fig 5 All units must have an external trap for condensate drain age Install a trap a minimum of 4 in deep and protect against freeze up If drain line is installed downstream from the exter nal trap pitch the line away from the unit at in per 10 ft of run Do not use a pipe size smaller than the unit connection 3 4 in The center drain plug looks like a star connection however it can be removed with a 2 in socket drive extension REMOVABLE HORIZONTAL RETURN DUCT OPENING COVER REMOVABLE HORIZONTAL SUPPLY DUCT OPENING COVER Fig 1 Horizontal Conversion Panels 2 CONNECTOR PKG C D ALT DRAIN HOLE CAS POWER CONTROL ACCESSORY PWR CRBTMPWROOTAO1 27 8 7 16 1 10 15 16 3 4 44 51 374 3 4 I9INPT 1 2 12 71NPT 1 2 12 71 NPT CRBTMPWROO2A01 1827 583 1 4 31 7 CRBTMPWROOSAO1 1 2 12 7
123. rary ventilation If a field supplied remote potentiometer Honeywell part number 5963 1128 is wired to the EconoMi er IV controller the minimum position of the damper can be controlled from a re mote location To control the minimum damper position remotely remove the factory installed jumper on the P and terminals on the IV controller Wire the field supplied potentiome ter to the P and P1 terminals on the 1 IV controller See Fig 38 29 Damper Movement Damper movement from full open to full closed or vice versa takes 21 2 minutes Thermostats The EconoMi Ser IV control works with con ventional thermostats that have a Y1 cool stage 1 Y2 cool stage 2 W1 heat stage 1 W2 heat stage 2 and fan EconoMi er IV control does not support space temperature sensors Connections are made at the thermostat terminal con nection board located 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 See Fig 28 When the timeclock contacts are closed the IV control will be in occupied mode When the timeclock contacts are open removing the 24 v signal from terminal the EconoMi
124. ressors and economizer to provide a supply air temperature determined to meet the Y1 and Y2 calls from the thermostat using the following three routines The three control routines are based on OAT The 3 routines are based on OAT where SASP Supply Air Set Point DXCTLO Direct Expansion Cooling Lockout Set Point PID Proportional Integral Routine 1 OAT DXCTLO Y energized economizer maintains a SASP SATLOI 3 Y2 energized economizer maintains SASP SATLO2 3 Routine 2 DXCTLO lt OAT lt 68 e Ifonly energized the economizer maintains SASP SATLOI 3 If SAT gt SASP 5 and economizer position gt 80 economizer will go to minimum position for 3 minutes or until SAT gt 68 First stage of mechanical cooling will be energized Integrator resets Economizer opens again and controls to current SASP after stage one on for 90 seconds e With and Y2 energized economizer maintains SASP SATLO2 3 If SAT gt SASP 5 and economizer position gt 80 economizer will go to minimum position for 3 minutes or until SAT gt 68 If compressor one is on then second stage of mechanical cooling will be energized Otherwise the first stage will be energized ntegrator resets Economizer opens again and controls to SASP after stage one on for 90 seconds Routine 3 OAT gt 68 Economizer is opened 100 Compressors 1 and 2 are cyc
125. s must be place when rigging Unit is not designed for handling by a fork truck Damage to unit may result Fig 6 Rigging Details 48TF UNIT SIZE NOMINAL CAPACITY tons OPERATING WEIGHT Ib Unit IV Roof Curbt COMPRESSOR Quantity No Cylinders per Circuit Oil 02 REFRIGERANT TYPE Expansion Device Operating Charge 1 02 Circuit 1 Circuit 2 CONDENSER COIL Rows Fins in Total Face Area sq ft CONDENSER FAN Nominal Cfm Quantity Diameter in Motor Hp Rpm Watts Input Total EVAPORATOR COIL Rows Fins in Total Face Area sq ft EVAPORATOR FAN Quantity Size in Type Drive Nominal Cfm Maximum Continuous Bhp Motor Frame Size Fan Rpm Range Motor Bearing Type Maximum Allowable Rpm Motor Pulley Pitch Diameter Min Max in Nominal Motor Shaft Diameter in Fan Pulley Pitch Diameter in Belt Quantity Type Length in Pulley Center Line Distance in Speed Change per Full Turn of Movable Pulley Flange rpm Movable Pulley Maximum Full Turns From Closed Position Factory Setting Factory Speed Setting rpm Fan Shaft Diameter at Pulley in LEGEND Al Aluminum Bhp Brake Horsepower Cu Copper Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High Static Std Alt High
126. sig No adjustment is necessary Refer to Tables 1A and 1B Loss of Charge Switch Located on the condenser liquid line is a low pressure switch which functions as a loss of charge switch This switch contains a Schrader core depres sor This switch opens at 7 psig and closes at 22 psig No ad justment is necessary Refer to Tables 1A and 1B Freezestat Located on the hair pin end of the evapo rator coil is a bimetal temperature sensing switch This switch protects the evaporator coil from freeze up due to lack of air flow The switch opens at 30 F and closes at 45 F No adjust ment is necessary Refer to Tables 1A and 1B Checking and Adjusting Refrigerant Charge The refrigerant system is fully charged with R 22 refrigerant tested and factory sealed Unit must operate in Cooling mode a minimum of 10 minutes before checking charge NOTE Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper R 22 charge A superheat charging chart is attached to the outside of the service access panel The chart includes the required suction line temperature at given suction line pressures and outdoor ambient temperatures An accurate superheat thermocouple type or thermistor type thermometer and a gage manifold are required when using the superheat charging method for evaluating the unit charge Do not use mercury or small dial type thermometers because they are not adequate
127. t Remove manometer from pressure tap and replace pipe plug on gas valve Turn on gas to unit and check for leaks 64 Heating 1 Purge gas supply line of air by opening union ahead of gas valve When gas odor is detected tighten union and wait 5 minutes before proceeding 2 Turn on electrical supply and open manual gas valve 3 Set system switch selector at HEAT position and fan switch at AUTO or ON position Set heating temperature lever above room temperature 4 The induced draft motor will start purging heat exchangers 5 After a call for heating the main burners should light within 5 seconds If the burners do not light then there is 22 second delay before another 5 second ignition try If the burners still do not light the time delay is repeated If the burners do 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 the burners are ignited 7 The evaporator fan motor will turn off 45 seconds after the thermostat temperature is satisfied 8 Adjust airflow to obtain a temperature rise within the range specified on the unit nameplate and in Tables 1A and 1B Table 42 Altitude Compensation 125 000 180 000 AND 220 000 BTUH NOMINAL INPUT 250 000 BTUH NOMINAL INPUT eo jid Proba Orifice Orifice Orifice Orifice Sizet Sizet Sizet Sizet 0 2 000 38 2 000 39 3 000 40 4 000 41 5 000
128. termine maximum deviation from average voltage 457 452 2 5v 464 457 7 v AC 457 455 22v Maximum deviation is 7 v 17 POWER EXHAUST ELECTRICAL DATA MCA MCA MCA MOCP 230 v 460 v 575 v POWER EXHAUST for separate PART NO power source CRPWREXHO21A01 0 9 15 CRPWREXH022A01 15 CRPWREXH023A01 18 15 CRPWREXHO24A01 1 6 N A 0 64 15 CRPWREXHO25A01 NA o9 15 CRPWREXH026A01 15 CRPWREXHO27A01 18 15 CRPWREXH028A01 15 CRPWREXHO29A01 10 15 CRPWREXHO30A01 1 6 0 64 15 N A Not available NOTE If a single power source is to be used size wire to include power exhaust MCA and MOCP Check MCA and MOCP when power exhaust is powered through the unit Determine the new MCA including the power exhaust using the following formula MCA New MCA unit only MCA of Power Exhaust For example using a 48 008 unit with MCA 40 1 and MOCP 45 with CRPWREXHO030A01 power exhaust MCA New 40 1 amps 1 6 amps 41 7 amps If the new MCA does not exceed the published MOCP then MOCP would not change The MOCP in this example is 45 amps and the MCA New is below 45 therefore the MOCP is acceptable If MCA New is larger than the pub lished MOCP raise the MOCP to the next larger size For separate power the for the power exhaust will be 15 amps NEC C US UNIT LOW VOLTAGE I
129. tion 68 Motor data 32 Performance 33 62 Pulley adjustment 37 Pulley setting 6 8 31 Speed 6 8 Factory installed options Convenience outlet 18 EconoMi er IV 22 30 EconoMi er2 22 25 Manual outdoor air damper Novar controls 18 PremierLink controls Filter Cleaning 67 Installation 24 Size 7 9 Flue gas passageways 73 Flue hood 12 Freeze protection thermostat Gas connection 7 9 Gas input 7 9 Gas piping 12 63 Gas pressure 1 7 9 12 64 25 19 69 72 30 63 68 6 8 29 26 28 18 30 18 19 21 7 9 68 Copyright 2005 Carrier Corporation INDEX Heat anticipator settings 7 9 13 Heatexchanger 7 9 High flow valves 63 High pressure switch Horizontal units 2 TAQ sensor 19 27 Integrated gas controller Error codes 73 Leak test 63 Limit switch 73 Liquid propane 7 9 Low pressure switch Main burners 64 73 Manual outdoor air damper Mounting Compressor Unit 4 Natural gas 7 9 Novar controls 18 Operating sequence Cooling 65 IV 65 EconoMi er2 65 67 Heating 65 Outdoor air hood 19 23 Outdoor air inlet screens 63 Outdoor air temperature sensor Physical data 6 9 Power supply 12 Wiring 13 PremierLink controls Pre start up 63 Pressure drop Return air 25 Pressure switches High pressure Low pressure Refrigerant Charge 68 72 Type 6 8 Refrigerant service ports Replacement parts 73 Return air filter 7 9 63 Return air temperature sensor Rigging unit 45 Roof curb Assembly 1 Dim
130. y Check filter and replace if necessary Reset thermostat Replace Proper operation no remedy necessary PROBLEM Burners will not Ignite Inadequate Heating Poor Flame Characteristics Burners will not Turn Off Table 45 Heating Service Troubleshooting CAUSE Misaligned spark electrodes No gas at main burners REMEDY Check flame ignition and sensor electrode positioning Adjust as needed Check gas line for air purge as necessary After purging gas line of air allow gas to dissipate for at least 5 min utes 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 overture rent protection require a cool down period before resetting Check all wiring and wirenut connections Replace thermostat Run continuity check Replace wires if necessary 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 or add additional unit Restricted airflow Clean filter replace filter or remove any restrictions Blower speed too low Limit switch cycles main burners To

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