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Trane Voyager 12.5 to 25 Tons Installation and Maintenance Manual

1. esistance K Nominal CSP or HSP F C Ohms Resistance Ohms 50 10 0 19 9 889 55 12 8 17 47 812 60 15 6 15 3 695 65 18 3 13 49 597 70 21 1 11 9 500 75 23 9 10 50 403 80 26 7 9 3 305 85 29 4 8 25 208 90 32 2 7 3 110 Test 2 Cooling Set Point CSP and Heating Set Point HSP The resistance ofthese potentiometers are measured between the following ZSM terminals Refer to Table 19 for approximate resistances at the given setpoints Cool SP Terminals 2 and 3 Range 100 to 900 Ohms approximate Heat SP Terminals 2 and 5 Range 100 to 900 Ohms approximate Test 3 System Mode and Fan Selection The combined resistance of the Mode selection switch and the Fan selection switch can be measured between terminals 2 and 4 on the Zone Sensor The possible switch combinations are listed Table 21 p 47 with their corresponding resistance values RT SVX26L EN Test 4 LED Indicator Test SYS ON HEAT COOL amp SERVICE Method 1 Testing the LED using a meter with diode test function Test both forward and reverse bias Forward bias should measure a voltage drop of 1 5 to 2 5 volts depending on your meter Reverse bias will show an Over Load or open circuit indication if LED is functional Method 2 Testing the LED with an analog Ohmmeter Connect Ohmmeter across LED in one direction then reverse the leads for the opposite direction The LED should have at least 100 times more resistance in reve
2. ASURED UN WHEN BAROMETRIC DA T IS RO ADDITIONAL EN EQUIPPED WITH TRIC RELIEF Typical installation clearance for single and multiple unit applications E DUCT EXT DISTANCE IS THE SA TATED 180 HARGE UNIT REDUCED TH 1 6 ENSIUNS ECONOMIZER DAMPER IS TO BE FROM PROTRUDING HOOD INSTEAD OF BASE E ANY CLEARANCE REQUIRED PER OR ECONOMIZER IS INSTALLED END TO END NOTE 3 0 WITHOUT ECONOMIZER 5 8 WITH ECONOMIZER lt RT SVX26L EN Unit Dimensions Figure 2 Unit dimensional data for 1272 tons standard efficiency units Pau 1273 mm 50 1 8 168 mm 6 5 8 DOWNFLOW CONDENSATE DRAIN CONN 25 mm 1 NPT e 1453 mm 57 3 16 SEE NOTE 22 mm 7 8 DIA HOLE UNIT CONTROL WIRE 106 11 16 2 11 16 70 13 16 51 mm 2 DIA HOLE SERVICE GAUGE UNIT POWER WIRE PORT ACCESS e Note gt NPT Gas Connection Figure3 Unit dimensional data for 1272 tons standard efficiency units 46 MM 1 13 16 SNL 2588 MM 38 MM 12 PERIMETER 530 PANT 101 7 8 1692 71 8 20 7 8 357 51 14 1 16 2 102 1 4 RT SVX26L EN 13 Unit Dimensions Figure 4 Horizontal duct dimensional data 127 tons standard efficiency units CLEARANCE 48 1219 MM CLEARANCE 60 1524 MM FILTER ACCESS DOOR HORIZONTAL UNITS ONLY HORIZO
3. RT SVX26L EN Figure 25 Return air smoke detector for downflow units PLASTIC ELBOW E Ss COPPER TUBE FACTORY INSTALLED VINYL TUBES 7 3 4 INCHES LONG yinyL TUBES 4 Slide one 2 piece of the vinyl tubing provided onto the short smoke detector inlet tube which protrudes out of the back side of the smoke detector Push this piece of vinyl tubing onto the inlet tube until it contacts the end of the plastic extension on the backside of the smoke detector 5 Slide the long piece of vinyl tubing provided onto one leg of the plastic barbed elbow provided Slide the other end of this piece of vinyl tubing with the elbow attached approximately 1 onto the end of the copper sampling tube installed in the unit s return air opening Position the leg of elbow without the vinyl tubing such that it points toward the front side of the unit directly out of the unit toward the filter access panel 6 Mount the smoke detector assembly into the unit Align the smoke detector exhaust tube down with the holes in the outer panel of the barometric relief hood and position the smoke detector flush on the panel Note On all units there is a hole with a plastic snap bushing located on the inner vertical side of the barometric relief hood that the long exhaust tube must pass through Be sure that the exhaust tube is aligned with this hole before positioning the smoke detector flush on the outer panel of
4. mms puo trees an INVALID Short guo Invalid T INVALID Open du a Invalid Programmable amp Digital Zone Sensor Test Testing Serial Communication Voltage 1 Verify 24 Vac is present between terminals J6 14 and J6 11 2 Disconnect wires from J6 11 and J6 12 Measure the voltage between J6 11 and J6 12 should be about 32 Vdc 3 Reconnect wires to terminals J6 11 and J6 12 Measure voltage again between J6 11 and J6 12 voltage should flash high and low every 0 5 seconds The voltage on the low end will measure about 19 Vdc while the voltage on the high end will measure from approximately 24 to 38 Vdc 4 Verify all modes of operation by running the unit through all of the steps in the Test Modes section discussed in Start Up p 37 5 After verifying proper unit operation exit the test mode Turn the fan on continuously at the ZSM by pressing the button with the fan symbol If the fan comes on and runs continuously the ZSM is good If you are not able to turn the fan on the ZSM is defective ReliaTel Refrigeration Module RTRM Default Chart If the RTCI loses input from the building management system the RTRM will control in the default mode after approximately 15 minutes If the RTRM loses the Heating and Cooling setpoint input the RTRM will control in the default mode instantaneously The temperature sensing thermistor in the Zone Sensor Module is the only comp
5. LP Manifold Gas Pressure b 0 2 w c Combustion Blower Suction Pressure 15t 2 1 to 3 1 0 8 to 1 2 Stage W C W C With Gas Valve Closed 24 Stage N A 2 1 to 3 1 w c Minimum Flame Sensing Current 9 5 0 Microamps D C Normal Sensing Current Range 8 0 to 16 0 Microamps D C Flue Gas Temperature Rise Above 400 F to 350 F to Ambient 500 F 475 F Flue Gas Content 2 8 3 to 9 5 8 0 to 9 0 Natural LP 9 5 to 10 5 Minimum Supply Air Temperature Across 40 F Heat Exchanger a For 50 Hertz applications multiply rated Btu h by 83 percent b Staged gas heat units have a negative pressure gas valve Never adjust the staged gas pressure valve to a positive pressure c A voltage reading across pens V amp V is equatable to the flame sens ing current One volt equals one micro amp Table 8 Piping Length of Iron Pipe Size IPS Inches Pipe ft 2 Pipe 3 4 Pipe 1 Pipe 1 4 Pipe 1 2 Pipe 15 76 176 345 750 1220 30 52 120 241 535 850 45 43 99 199 435 700 60 38 86 173 380 610 75 77 155 345 545 Figure 20 Typical unit gas train configuration GAS OUTLET PRESSURE TAP GAs INLET AIR ORIFICE PLATE W GASKET PRESSURE TAP Use the following checklist in conjunction with the general checklist General Unit Requirements p 19 to ensure that the unit is properly in
6. Thru the Base Gas Pipe Opening See Detail A Thru the Base Electrical Height of gas pipe required from inside base of unit to gas 4 shut assembly DETAIL A Figure 28 Gas piping Gas Piping Assemb A S s S S N N S k 2 X N N 7 7 V Thru the Base Access 35 Pre Start Test Modes There are three methods in which the Test mode can be cycled at LTB Test 1 and LTB Test 2 1 Step Test Mode This method initiates the different components of the unit one at a time by temporarily shorting across the two test terminals for two to three seconds For the initial start up of the unit this method allows the technician to cycle a component On and have up to one hour to complete the check 2 Resistance Test Mode This method can be used for start up providing a decade box for variable resistance outputs is available This method initiates the different components of the unit one at a time when a specific resistance value is placed across the two test terminals The unit will remain in the specific test mode for approximately one hour even though the resistance is left on the test terminals 3 Auto Test Mode This method is not recommended for start up due to the short timing between individual component steps This method initiates the different components of the u
7. 1213 1040 YH 150 300 Modulating Gas Heat with or without Dehumidification TEE 2313 1501 5 150 300 50 60HZ 2 Stage Gas Heat with or without Dehumidification 2313 1503 YS 150 300 50 60HZ Modulating Gas Heat with or without Dehumidification 2313 1502 YS 150 300 50 60HZ 2 Stage Gas Heat with without Dehumidification Control Box 2313 1504 5 150 300 50 60HZ Modulating Gas Heat with or without Dehumidification Connections 1213 1019 YH 150 240 2 Stage Gas Heat with or without Dehumidification 200 575 1213 1020 YH 150 240 Modulating Gas Heat with or without Dehumidification 1213 1048 YH 300 50 60HZ 2 Stage Gas Heat with or without Dehumidification 1213 1049 YH 300 50 60HZ Modulating Gas Heat with or without Dehumidification Module ondas 1213 1029 YH 150 300 50 60HZ 2 Stage Gas Heat with or without Dehumidification Connections 1213 1030 YH 150 300 50 60HZ Modulating Gas Heat with or without Dehumidification 2313 1484 YS 150 300 50 60HZ 2 Stage Gas Heat 1213 1002 YH 150 300 50 60HZ 2 Stage Gas Heat Power 208 575 2313 1485 YS 150 300 50 60HZ Modulating Gas Heat 1213 1003 YH 150 300 50 60HZ Modulating Gas Heat 2313 1493 YS 150 300 YH 150 300 2 Stage Gas Heat with or without Dehumidification Air 1213 1010 YH 150 300 2 Stage Gas Heat with or without Dehumidification Volume 2313 1494 5 150 300 Modulating Gas Heat with or withou
8. 1 Flash Communication Failure 2 Flashes System Lockout 4 Flashes TCO1 or TCO2 Open 5 Flashes Flame w o Gas Valve Cooling Failure 1 Cooling and heating set point slide pot on the zone sensor has failed Refer to Zone Temperature Sensor ZTS Test p 46 2 Zone temperature thermistor ZTEMP on ZTS failed Refer to Zone Temperature Sensor ZTS Test p 46 3 CC1 or CC2 24 Vac control circuit has opened check CC1 and CC2 coils and any of the controls below that apply to the unit HPC1 HPC2 4 LPC1 has opened during the three minute minimum ontime during consecutive compressor starts check LPC1 or LPC2 by testing voltage between the J1 8 and J3 2 terminals on the RTRM and ground If Vac is present the LPCs has not tripped If no voltage is present LPCs has tripped Service Failure 1 Ifthe supply fan proving switch has closed the unit will not operate when connected to check the fan motor belts and proving switch 2 Ifthe clogged filter switch has closed check the filters Simultaneous Heat and Cool Failure e Emergency Stop is activated Method 2 The second method for determining system status is done by checking voltage readings atthe RTRM J6 The system indication descriptions and the approximate voltages are listed below RT SVX26L EN Troubleshooting System Failure Measure the voltage between terminals J6 9 and J6 6 e Normal Operation approximately 32 V
9. 1213 1045 YH 150 300 Modulating Gas Heat Multi speed Fans Single Zone Variable Air Volume Control Box Connections 208 575 2313 2008 YS 180 300 2 Stage Gas Heat 1213 1024 2313 2009 YH 150 240 2 Stage Gas Heat YS 180 300 Modulating Gas Heat 1213 1025 YH 150 240 Modulating Gas Heat 1213 1262 YH 300 2 Stage Gas Heat 1213 1263 YH 300 Modulating Gas Heat Module Connections 208 575 2313 2054 YS 180 300 2 Stage Gas Heat 1213 1034 2313 2055 YH 150 300 2 Stage Gas Heat YS 180 300 Modulating Gas Heat 1213 1035 YH 150 300 Modulating Gas Heat RT SVX26L EN 51 Warranty YHC YSC YHD and YHD Parts Only Models Less than 20 Tons for Commercial Use This warranty is extended by Trane to the original purchaser and to any succeeding owner of the real property to which the Air Conditioner is originally affixed and applies to products purchased and retained for use within the U S A and Canada There is no warranty against corrosion erosion or deterioration If any part of your air conditioner fails because of a manufacturing defect within one year from the date of the original purchase Warrantor will furnish without charge the required replacement part If the heat exchanger fails because of a manufacturing defect within five years from the date of start up Warrantor will furnish without charge a replacement heat exchanger In ad
10. BL RD BL 12 Ws OR lt 5 SEE INSET 15 A FOR UNITS TNS4 tee WITH GR ELECTRIC HEAT e 14 wi w2 w3 410A WH 411A BK 15 RD EL PPF28A PPF25 PPM25 PPM25 16 412A 3m 413A HTB1 WH BK 17 GR 15 AMP 120v 777 18 SEE MAIN CONTROL BOX FOR INSET A UCB UDC THE REST OF THE CIRCUITS FUSE REPLACEMENT TABLE 351A 352A 355A FU12 FU13 208 250 FLQ 10 0 RD BL FU1Z FU13 460 TYPE FLQ 5 0 AMP ELECTRIC HEAT SEE DIAGRAM LEGEND DETAILS DEVICE LINE DESIGNATION DESCRIPTION NUMBER ws HTB1 VOLTAGE TERMINAL BLOCK 16 RD BL BK RTB RECEPTACLE TERMINAL BLOCK 8 SR SERVICE RECEPTACLE GFCI 16 SRD SERVICE RECEPTACLE DISCONNECT 4 9 9 2 TNS4 SERVICE RECEPTACLE XFMR 12 1 UCB UNIT CIRCUIT BREAKER 8 UDC UNIT DISCONNECT 8 PPF PPM25 SERVIVE RECEPTACLE PLUG 14 UNITS W OP TIONAL UNPOWERED GFci NOTES 1 UNLESS OTHERWISE NOTED ALL SWITCHES ARE SHOWN L AT 25 C 77 F AT ATMOSPHERIC PRESSURE ES AT 50 RELATIVE HUMIDITY WITH ALL UTILITIES SR TURNED OFF AND AFTER A NORMAL SHUTDOWN HAS OCCURED 2 DASHED LINES INDICATE RECOMMENDED FIELD WIRING E BY OTHERS DASHED LINE ENCLOSURES AND OR DASHED 15 DEVICE OUTLINES INDICATE COMPONENTS PROVIDED BY
11. 120V THE FIELD PHANTOM LINE ENCLOSURES INDICATE Ka ALTERNATE CIRCUITRY OR AVAILABLE SALES OPTIONS 3 NUMBERS ALONG THE RIGHT SIDE OF THE SCHEMATIC DESIGNATE THE LOCATION OF CONTACTS BY LINE NUMBER INSET C aN NAC NUMBER INDICATES A NORMALLY CLOSED 404B RD 405B BL 4 CONNECTIONS SHOWN ARE FOR 230V 80HZ 3PH WHEN WHEN 208V 60HZ 3PH UNIT OPERATION IS REQUIRED REMOVE WIRE 405B BL FROM TERMINAL ON TERMINAL BLOCK RTB1 AND CONNECT WIRE 407A BR TO TERMINAL B wey lt CONNECTIONS SHOWN ARE FOR 230V 60HZ 3PH TNS4 120v WHEN 460V 60HZ 3PH UNIT OPERATION COM e 460V RD BL IS REQUIRED SEE INSET C WH BK GR 4 6 TAPE WIRE 407A BR TO HARNESS IF WIRED FOR 230V OPERATION TAPE WIRE 405B BL TO HARNESS IF WIRED FOR 208V OPERATION 410A WH AT A BK RT SVX26L EN 31 Factory Mounted Unit Options Unpowered Convenience Outlet Unpowered Option FIYCOUP 1 When the unpowered convenience outlet option is installed remove the receptacle 2 The field wiring should be routed through the hole in the base for downflow applications or front panel for horizontal applications then through holes provided in the J box bottom for EMT and top for flexible conduit 3 Connect the three 3 wires to terminals inside outlet box Figure 23 Power options A Powered Return Air Smoke Detector Pre Requisite Note The following fie
12. Installation Operation and Maintenance Packaged Rooftop Air Conditioners Voyager Gas Electric 1212 25 Tons 60 50Hz Model Number YS 150 300 YH 150 300 ASAFETY WARNING Only qualified personnel should install and service the equipment The installation starting up and servicing of heating ventilating and air conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment January 2015 RT SVX26L EN FD ingersou Introduction Read this manual thoroughly before operating or servicing this unit Warnings Cautions and Notices Safety advisories appear throughout this manual as required Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions ATTENTION Warnings Cautions and Notices appear at appropriate sections throughout this literature Read these carefully Indicates a potentially hazardous A WARNING situation which if not avoided could result in death or serious injury Indicates a potentially hazardous ACAUTION situation which if not avoided could result in minor or moderate injury It could also be used to alert against unsafe
13. 3 Table 18 Sample maintenance log Maintenance Final Process For future reference you may find it helpful to record the unit data requested below in the blanks provided 1 Complete Unit Model Number 2 Unit Serial Number 3 Wiring Diagram Numbers from unit control panel schematic s connection s Refrigerant Circuit 1 Refrigerant Circuit 2 Current Suct Disch Liquid Suct Disch Liquid Ambient Compr Press Press Press Super Sub cool Compr Press Press Press Super Sub cool Date TempF C Level Psig kPa Psig kPa Psig kPa heat F F C Oil Level Psig kPa Psig kPa Psig kPa heat F C F C ok ok low low ok ok low low ok ok low low ok ok low low ok ok low low ok ok low low ok ok low low ok ok low low ok ok low low ok ok low low ok ok low low RT SVX26LEN 43 Troubleshooting AWARNING Hazardous Service Procedures The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical mechanical or other potential safety hazards Always refer to the safety warnings provided throughout this manual concerning these procedures Unless specified otherwise disconnect all electrical power including remote disconnect and disc
14. Control Recommended Wire Size 000 460 feet 18 gauge 000 140 m 0 75 mm 461 732 feet 16 gauge Controls using DC Analog Input Outputs Standard Low Voltage Multiconductor Wire Before installing any connecting wiring between the unit and components utilizing a DC analog input output signal refer to Unit Dimensions p 12 for the electrical access locations provided on the unit 1 Table 4 lists the conductor sizing guidelines that must be followed when interconnecting the DC binary output devices and the system components utilizing a DC analog input output signal to the unit Note Resistance in excess of 2 5 ohms per conductor can cause deviations in the accuracy of the controls 2 Ensure that the wiring between controls and the unit s termination point does not exceed two and a half 2 5 ohms conductor for the length of the run 3 Do not run the electrical wires transporting DC signals in or around conduit housing high voltage wires 22 Table4 Zone sensor module wiring Distance from Unit to Control Recommended Wire Size 0 150 feet 0 45 7 m 22 gauge 0 33 mm 151 240 feet 46 73 1 m 20 gauge 0 50 mm 241 385 feet 73 5 117 3 m 18 gauge 0 75 mm 386 610 feet 117 7 185 9 m 16 gauge 1 3 mm 611 970 feet 186 2 295 7 m 14 gauge 2 0 mm Figure 14 ReliaTel options module 8 JA J9 1000
15. While in the mode the unit will heat to the Supply Air Heating Setpoint 3 5 F During low loads or low airflow conditions the actual temperature swing of the discharge air will likely be greater The RTRM utilizes a proportional and integral control scheme with the integration occurring when the supply air temperature is outside the deadband As long as the supply air temperature is within the setpoint deadband the system is considered to be satisfied and no staging up or down will occur Supply Duct Static Pressure Control The supply duct static pressure is measured by a transducer with a 0 25 to 2 125 Vdc proportional output which corresponds to an adjustable supply duct static pressure of 0 3 w c to 2 5 w c respectively with a deadband adjustment range from 0 2 w c to 1 0 w c The setpoint is adjustable on the RTAM Static Pressure Setpoint potentiometer or through ICS Example RT SVX26L EN Start Up Supply Duct Static Setpoint 2 0 w c RTAM deadband 0 2 w c RTAM Duct Static Control Range 1 9 w c to 2 1 w c Figure 30 Supply duct static pressure control Outside Air Pressure Sensor Static Pressure Sensing Coverplate 0 07 hole in Supply fan bulkhead Tubing TE through vertical support Duct Static Transducer VHR Relay Output For standalone VAV unit operation the VHR output should be wired to drive VAV boxes to maximum position during all heating modes an
16. backward for an extended period the motor winding can overheat and cause the motor winding thermostat to open Figure 29 Compressor terminal box Compressor Terminal Phase T2 Phase B T3 Phase C Winding Thermostat Compressor Terminal Box Note The Copeland SSA and SPA scroll compressors for R 410A units use Trane 011 00094 The correct oil for Trane CSHD is Trane 01100079 01100080 Compressor types are listed in Table 13 p 37 The appropriate oil charge is listed in Table 14 p 38 Table 13 Compressor types Tonnage C1 c2 YS 150 SSA067 SSA054 YH 150 ZP91KCE ZP38K5E YH 150 Reheat ZP67KCE ZP67KCE YS 180 155 estos Pri YH 180 2 104 2 49 YH 180 Reheat ZP83KCE ZP83KCE YS 210 175 e id SUE 2 YH 210 ZP122KCE ZPSAKSE YH 210 Reheat CSHD089 ZP83KCE YS 240 200 CSHD142 SSA083 YH 240 CSHD142K 0M ZP61KCE YH 240 Reheat CSHD120 CSHD120 YS 300 250 CSHD120 CSHD120 YH 300 ZPT122K5E ZP122KCE 37 Start Up Table 14 POE Oil recharge amount fl oz C1 2 Model 25mm 18mm 25mm 18mm YS 150 56 105 6 62 99 2 YH 150 56 38 YH 150 Reheat 56 56 YS 180 155 112 182 4 62 62 96 YH 180 81 38 YH 180 Reheat 56 56 YSH210 YS 175 112 182 4 38 62 96 YS 210 175 112 38 62 YH 210 81 38 YH 210 Reheat 102 56 YS 240 200 112 56 YH 240 112 38 YH 240 Reheat 112 112 YS 3
17. warehouse at Company designated shipping point freight allowed to Buyer s city or port of export for shipment outside the conterminous United States replacement equipment or at the option of the Company parts therefore for all Company products notconforming to this warranty and which have been returned to the manufacturer The Company shall not be obligated to pay for the cost of lost refrigerant No liability whatsoever shall attach to the Company until said products have been paid for and then said liability shall be limited to the purchase price of the equipment shown to be defective The Company makes certain further warranty protection available on an optional extra cost basis Any further warranty must be in writing signed by an officer of the Company The warranty and liability set forth herein are in lieu of all other warranties and liabilities whether in contract or in negligence express or implied in law or in fact including implied warranties of merchantability and fitness for particular use In no event shall the Company be liable for any incidental or consequential damages RT SVX26L EN Warranty Trane 2701 Wilma Rudolph Blvd Clarksville TN 37040 1008 Attention Manager Product Service This warranty is for commercial usage of said equipment and not applicable when the equipment is used for a residential application Commercial use is any application where the end purchaser uses the product for other t
18. wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury RT SVX26L EN Water Damage Non factory penetrations through the base of this unit are not allowed Any penetration in the base of the unit may affect the water tight integrity of the unit and lead to water leaks into the conditioned space Failure to follow instructions could result in equipment and property damage Overview of Manual Note One copy ofthis document ships inside the control panel of each unit and is customer property It must be retained by the unit s maintenance personnel This booklet describes proper installation operation and maintenance procedures for air cooled systems By carefully reviewing the information within this manual and following the instructions the risk of improper operation and or component damage will be minimized It is important that periodic maintenance be performed to help assure trouble free operation A maintenance schedule is provided at the end of this manual Should equipment failure occur contact a qualified service organization with qualified experienced HVAC technicians to properly diagnose and repair this equipment Revision Summary RT SVX26L EN 21 Jan 2015 e Title 24 ASH
19. 1 2 Resistance Ohms DC volts WC 100 0 45 0 30 350 1 30 0 98 540 1 75 1 49 730 2 11 2 00 2900 22 38 2 5 Note To reduce the risk of coil freezing it is not recommended to set the supply air temperature setpoint below 50 F 39 Start Up Figure 32 RTAM module 1 2 IGV OFF OFF VFD ON OFF VAV lt or oN 3 4 Static Static No Reset OFF OFF pressure pressure Return Air OFF ON setpoint 0 Ol For remote deadband cut Zone Temp ON OFF a is jumper Outdoor Air ON Sunol Air Heating etpoint 5 Reset Q 2 setpoint a 8 TI t s Y R75 lR66 8 i Supply sir 2 2 m coolin A i se poit setpoint Ems Q IP switch 0 0 00000 R69 R63 R68 Remote setpoint terminal strip on 12345 aT swi 23456789 1011 1213 4 T 23 4 5 t Swi Supply Air Static Pressure S P ceo pply Air Cooling Setpoint Supply Air Reset Amount Supply Air S a ressure Deadband orning Warmup Setpoint Supply Air Reset Setpoint Supply Air Heating Setpoint Final System Set Up After completing all of the pre start and start up procedures outlined in the previous sections i e operating the unit in each of its modes through all available stages of cooling and heating perform t
20. 19 Note 701 only available on select 5 CompleteCoat Condenser Coil define the operation specific models with Hail Guard 22 Y other options Tor Digit 14 Fresh Air Selection Digit 18 Through The Base any spe 0 NoFresh Air Provisions When ordering replacement parts or D Econ Dry Bulb w Barometric O Through The Base Provisions requesting service be sure to refer to E bic A Through The Base Electric the specific model number and serial Econ nelerence Ena py B Through The Base Gas inted h Barometric Relief Through The Base Electric Gas number printed onthe H Econ Comparative Enthaply w D Through The Base Access nameplate Barometric Relief 1 Unit T K Low Leak Econ w Barometric Digit 19 Disconnect Switch igit 1 Unit Type Relief Circuit Breaker Y Packaged Gas Electric M Low Leak Econ Reference 0 No Disconnect circuit break Digit 2 Efficiency Enthalpy w Barometric Relief 1 Unit Mounted Non Fused S Standard Effici Low Leak Econ Comparative Disconnect Switch Hl High Effici ney 2 w dida Relic 2 Unit Mounted Circuit Breaker 5 4 igit su an Drive iai i Digit 3 Airflow Configuration g PPly Digit 20 Convenience Outlet Type Motor Option D Downflow H Horizontal 0 Standard Motor i O Without Convenience Outlet el E 1 Oversized Motor A Unpowered Convenience Outlet Digit 4 5 6 Nominal Gross 3 High Efficien
21. 5 22 2 30 6 18 9 23 4 15 1 18 7 17 8 24 5 25 6 35 6 20 0 24 5 B 19 6 24 9 22 8 31 7 28 9 40 6 25 6 32 3 25 8 39 1 28 4 38 9 32 8 45 0 31 1 38 9 41 Maintenance Monthly Maintenance Before completing the following checks turn the unit OFF and lock the main power disconnect switch open AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Filters Inspect the return air filters Clean or replace them if necessary Refer to the unit Service Facts for filter information Return Air Smoke Detector Maintenance Airflow through the unit is affected by the amount of dirt and debris accumulated on the indoor coil and filters To insure that airflow through the unit is adequate for proper sampling by the return air smoke detector complete adherence to the maintenance procedures including recommended intervals between filter changes and coil cleaning is required Periodic checks and maintenance procedures must be performed on the smoke detector to insure that it will function properly For detailed instructions concerning these checks and procedures refer to the appropriate section s of the smoke detector Installation and Maintenance Instructions p
22. Attach adequate strength lifting slings to all four lifting brackets in the unit base rail Do not use cables chains or slings except as shown 3 Install a lifting bar as shown in Figure 11 p 18 to protect the unit and to facilitate a uniform lift The minimum distance between the lifting hook and the top of the unit should be 7 feet 4 Test lift the unit to ensure it is properly rigged and balanced make any necessary rigging adjustments Lift the unit and position it into place Downflow units align the base rail of the unit with the curb rail while lowering the unit onto the curb Make sure that the gasket on the curb is not damaged while positioning the unit CENTER OF GRAVITY LENGTH OE LENGTH CENTER p m Cem Rigging and center of gravity data RT SVX26L EN Installation Foundation A WARNING Risk of Roof Collapsing Confirm with a structural engineer that the roof structure is strong enough to support the combined weight of the roofcurb and the unit Refer to Unit Weights p 17 for typical unit and curb weights Failure to ensure proper structural roof support could cause the roof to collapse which could result in death or serious injury and property damage Water Damage Non factory penetrations through the base of this unit are not allowed Any penetration in the base of the unit may affect the water tight integrity of the unit and lead to water lea
23. Flashes OA Quality Sensor e 6 Flashes OA Humidity Sensor 7 Flashes OA Temp Sensor e 8Flashes MA Temp Sensor e 9 Flashes RAM Fault e 10 Flashes ROM Fault e 11 Flashes EEPROM Fault 48 RT SVX26L EN Wiring Diagrams Note Wiring diagrams can be accessed via e Library by entering the diagram number in the literature order number search field or by contacting technical support Table 22 Wiring diagrams Type of Schematic Diagram Airflow Type Voltage Number Description 2313 1480 YS 150 300 50 60HZ 2 Stage Gas Heat 1213 1002 YH 150 300 50 60HZ 2 Stage Gas Heat Power 200 575 2313 1481 5 150 300 50 60HZ Modulating Gas Heat 1213 1003 YH 150 300 50 60HZ Modulating Gas Heat 2313 1489 YS 150 300 2 Stage Gas Heat with or without Dehumidification 1213 1010 YH 150 300 2 Stage Gas Heat with or without Dehumidification 2313 1490 YS 150 300 with or without Dehumidification Control 200 575 1213 1010 YH 150 300 Modulating Gas Heat with or without Dehumidification 2313 1495 YS 150 300 with or without Dehumidification Option Modules 1213 1015 YH 150 300 with or without Dehumidification Option Modules 2313 1516 YS 150 300 2 Stage Gas Heat with or without Dehumidification Constant Raceway 1213 1039 YH 150 300 2 Stage Gas Heat with or without Dehumidification Volume Connection 2313 1517 YS 150 300 Modulating Gas Heat with or without Dehumidification
24. LENGTH gt CENTER OF GRAVITY WIDTH D CENTER OF GRAVITY RT SVX26L EN 17 Unit Weights Rigging AAWARNING Heavy Objects Ensure that all the lifting equipment used is properly rated for the weight of the unit being lifted Each of the cables chains or slings hooks and shackles used to lift the unit must be capable of supporting the entire weight of the unit Lifting cables chains or slings may not be of the same length Adjust as necessary for even unit lift Other lifting arrangements could cause equipment or property damage Failure to follow instructions above or properly lift unit could result in unit dropping and possibly crushing operator technician which could result in death or serious injury AWARNING Improper Unit Lift Test lift unit approximately 24 inches to verify proper center of gravity lift point To avoid dropping of unit reposition lifting point if unit is not level Failure to properly lift unit could result in unit dropping and possibly crushing operator technician which could result in death or serious injury and possible equipment or property only damage Figure 11 Refer to Figure 11 p 18 and Table 1 p 17 and Table 2 p 17 for typical unit operating weights rigging before proceeding 1 Remove the shipping crate from around the unit Do not remove the crating from the top of the unit 2 Rig the unit as shown in Figure 11 p 18
25. Resetting Cooling and Heating Lockouts Cooling Failures and Heating Lockouts are reset in an identical manner Method 1 46 explains resetting the system from the space Method 2 p 46 explains resetting the system at the unit 45 Troubleshooting Note Before resetting Cooling Failures and Heating Lockouts check the Failure Status Diagnostics by the methods previously explained Diagnostics will be lost when the power to the unit is disconnected Method 1 To reset the system from the space turn the Mode selection switch at the zone sensor to the Off position After approximately 30 seconds turn the Mode selection switch to the desired mode i e Heat Cool or Auto Method 2 To reset the system at the unit cycle the unit power by turning the disconnect switch Off and then Lockouts can be cleared through the building management system Refer to the building management system instructions for more information Zone Temperature Sensor ZTS Service Indicator The ZSM SERVICE LED is a generic indicator that will signal the closing of a Normally Open switch at any time providing the Indoor Motor IDM is operating This indicator is usually used to indicate a clogged filter or an air side fan failure RTRM will ignore the closing of this Normally Open switch for 2 x1 minutes This helps prevent nuisance SERVICE LED indications The exception is the LED will flash 40 seconds af
26. UCB or the electric heat terminal block Refer to the customer connection diagram that shipped with the unit for specific termination points e Provide proper grounding for the unit in accordance with local and national codes Optional TBUE Wiring Through the Base Electrical Option e Location of the applicable electrical service is illustrated below Refer to the customer connection diagram that is shipped with the unit for specific termination points The termination points depending on the customer option selected would be a factory mounted nonfused disconnect switch UDC or circuit breaker UCB e Provide proper grounding for the unit in accordance with local and national codes RT SVX26L EN Installation Figure 13 Through the base electrical option Main power entrance for units with factory mounted disconnect or circuit breaker amp GFCI convenience outlet Main power entrance for units with resistance heat Main power entrance for all units without resistance heat Connect conduit at the control panel Field Installed Control Wiring An overall layout of the various control options available with the required number of conductors for each control device is illustrated in Figure 18 p 24 Note All field wiring must conform to NEC guidelines as well as state and local codes Control Power Transformer The 24 volt control power transformers are to be used only with the accessories called out in th
27. belts appear frayed or worn Units with dual belts require a matched set of belts to ensure equal belt length When removing or installing the new belts do not stretch them over the sheaves Loosen the belts using the belt tension adjustment bolts on the motor mounting base Once the new belts are installed using a Browning or Gates tension gauge or equivalent illustrated in Figure 33 adjust the belt tension as follows 1 To determine the appropriate belt deflection a Measure the center to center shaft distance in inches between the fan and motor sheaves b Divide the distance measured in Step 1a by 64 the resulting value represents the amount of belt deflection that corresponds to the proper belt tension 2 Setthe large O ring on the belt tension gauge at the deflection value determined in Step 1b 3 Setthe small O ring at zero on the force scale of the gauge plunger 4 Placethelarge end of the gauge at the center of the belt span then depress the gauge plunger until the large O ring is even with the top of the next belt or even with a straightedge placed across the fan and motor sheaves Refer to Table 17 p 41 5 Remove the belt tension gauge The small O ring now indicates a number other than zero on the plunger s force scale This number represents the force in pounds required to give the needed deflection RT SVX26L EN 6 Compare the force scale reading Step 5 with the appropriate fo
28. efficiency units only 15 Factory Installed Options are Built to Order Check order services for estimated production cycle 16 The Novar control option includes the following factory installed and wired devices Novar 2024 Novar 3051 rooftop controller fan proving switch clogged filter or unit shutdown switch Cool 1 Cool 2 Heat switch and discharge air sensor Novar 2024 is downflow only Note Option cannot be ordered in conjunction with a factory installed smoke detector 17 TCI is for use with non VariTrac systems and VariTrac systems 18 For use with multi speed and 57 units only 19 Novar is not available with SZ products 20 Demand Control Ventilation Option includes wiring only The C02 sensor is a field installed only option 21 Frostat is standard on VAV and high efficiency units 22 Supply and or return smoke detector may not be used with the plenum smoke detector 23 Only available where MOP is above 60A 24 575 VAC option is 25 25 Standard filters are not available with Low Leak Economizers 26 Human Interface is standard with FDD Fault Detection Diagnostics RT SVX26L EN General Information Unit Description Before shipment each unit is leak tested dehydrated charged with refrigerant and compressor oil and run tested for proper control operation For major design sequence F units the condenser coils are microchannel type a
29. etc e sure that all retaining screws are reinstalled in the unit access panels once these checks are complete e With the unit running check and record the ambient temperature compressor suction and discharge pressures each circuit superheat each circuit Record this data on an operator s maintenance log like the one shown in Table 18 p 43 If the operating pressures indicate a refrigerant shortage measure the system superheat For guidelines refer to Compressor Start Up p 37 Note Do NOT release refrigerant to the atmosphere If adding or removing refrigerant is required the service technician must comply with all federal state and local laws Heating Season e Inspect the unit s air filters If necessary clean or replace them e Check supply fan motor bearings repair or replace the motor as necessary e Inspect both the main unit control panel and heat section control box for loose electrical components and terminal connections as well as damaged wire insulation Make any necessary repairs e Verify that the electric heat system operates properly Condenser Coil Cleaning Regular coil maintenance including annual cleaning enhances the unit s operating efficiency by minimizing compressor head pressure and amperage draw evaporator water carryover fan brake horsepower due to increase static pressure losses airflow reduction At least once each year or more often if the unit is
30. located in a dirty environment clean the condenser coils using the instructions outlined below Be sure to follow these instructions as closely as possible to avoid damaging the coils RT SVX26L EN Microchannel MCHE Coils Coil Damage DO NOT use any detergents with microchannel condenser coils Use pressurized water or air ONLY with pressure no greater than 600psi Failure to do so could result in coil damage For additional information regarding the proper microchannel coil cleaning procedure refer to RT SVB83 EN Due to the soft material and thin walls of the MCHE coils the traditional field maintenance method recommended for Round Tube Plate Fin RTPF coils does not apply to microchannel coils Moreover chemical cleaners are a risk factor to MCHE due to the material of the coil The manufacturer does not recommend the use of chemical cleaners to clean microchannel coils Using chemical cleaners could lead to warranty claims being further evaluated for validity and failure analysis The recommended cleaning method for microchannel condenser coils is pressurized water or air with a non pinpoint nozzle and an ECU ofatleast 180 with pressure no greater than 600 psi To minimize the risk of coil damage approach the cleaning ofthe coil with the pressure washer aimed perpendicularto the face ofthe coil during cleaning Optimum clearance between the sprayer nozzle and the microchannel coil is 1
31. setpoint Cooling Setpoint Only Zone Sensor Module ZSM BAYSENS108 This electronic sensor features four system switch settings Heat Cool Auto and Off and two fan settings On and Auto It is a manual or auto changeover control with dual setpoint capability It can be used with a remote zone temperature sensor BAYSENSO75 Zone Sensor BAYSENS110 This electronic sensor features four system switch settings Heat Cool Auto and Off and two fan settings On and Auto with four system status LEDs It is a manual or auto changeover control with dual setpoint capability It can be used with a remote zone temperature sensor BAYSENSO75 Programmable Zone Sensor BAYSENS 119 Programmable Night Setback Auto or manual changeover with seven day programming Keyboard selection of Heat Cool Fan Auto On programmable sensors have System On Heat Cool Service LED indicators as standard Night Setback Sensors have one 1 Occupied one 1 Un occupied and one 1 Override program per day Remote Zone Sensor BAYSENSO73 This electronic sensor features remote zone sensing and timed override with override cancellation It is used with a RT SVX26L EN General Information Trane Integrated Comfort building management system Remote Zone Sensor BAYSENS074 This electronic sensor features single setpoint capability and timed override with override cancellation It is used with a Trane Integrated C
32. the barometric relief hood 7 Secure the smoke detector to the hood with two 410 16 x 3 4 sheet metal screws provided Note In order to perform the last part of this operation it will be necessary to remove the barometric relief RT SVX26L EN 2 INCHES LONG METAL EXHAUST TUBE 16 34 INCHES LONG Factory Mounted Unit Options TWO PIECE HOOD METAL INTAKE TUBE SMOKE DETECTOR TUBES INSTALL FROM BOTTOM TOP DOES NOT NEED TO B REMOVED FROM SMOKE DETECTOR filter open the barometric relief damper and reach inside through the barometric relief outlet to access and connect the copper exhaust elbow to the smoke detector exhaust tube 8 Connect the leg of the plastic elbow without the vinyl tubing attached that was installed in Step 5 to the smoke detector inlet tube pushing it onto the piece of vinyl tubing attached to the inlet tube 9 Refer to Figure 26 p 34 for wire connections of return air smoke detector to the unit wiring harness 10 This completes the installation of the return air smoke detector If the unit s air filter s and or barometric relief filter were removed to ease installation of the smoke detector they need to be replaced at this time Airflow amp Sampling Refer to the instructions provided below regarding unit airflow to assure that the return air smoke detector will function properly Important return air smoke detector is designed to shut off the unit if smoke is sen
33. trap condition which could result in condensate backup due to air lock Figure 12 Condensate trap installation ENCLOSURE 75 INCH NPT T CONNECTOR Z CLEANDUT PLUG Filter Installation Each unit ships with 2 inch filters installed The quantity of filters is determined by unit size Access to the filters is obtained by removing the indoor fan access panel If included pull on filter removal tool to remove filters Refer to the unit Service Facts shipped with each unit for filter requirements Note Do not operate the unit without filters Field Installed Power Wiring An overall dimensional layout for the standard field installed wiring entrance into the unitis illustrated in Unit Dimensions 12 To insure that the unit s supply power wiring is properly sized and installed follow the guidelines outlined below Note All field installed wiring must conform to NEC guidelines as well as state and Local codes Verify that the power supply available is compatible with the unit s nameplate ratings The available supply power must be within 10 percent ofthe rated voltage stamped on the nameplate Use only copper conductors to connectthe power supply to the unit Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors could result in equipment damage Note If the unit is not equipped with an
34. will shut off all mechanical operations lock the system out send a diagnostic to ICS and the SERVICE output will flash The system will remain locked out until a reset is initiated either manually or through ICS Drain Pan Condensate Overflow Switch Optional This input incorporates the Condensate Overflow Switch COF mounted on the drain pan and the ReliaTel Options Module RTOM When the condensate level reaches the trip point for 6 continuous seconds the RTOM will shut down all unit function until the overflow condition has cleared The unit will return to normal operation after 6 continuous seconds with the COF in a non tripped condition If the condensate level causes the unit to shutdown more than 2 times in a 3 day period the unit will be locked out of operation A manual reset of the diagnostic system through the Zone Sensor or Building Automation System BAS will be required Cycling unit power will also clear the fault Clogged Filter Switch Optional The unit mounted clogged filter switch monitors the pressure differential across the return air filters It is mounted in the filter section and is connected to the RTOM A diagnostic SERVICE signal is sent to the remote panel if the pressure differential across the filters is at least 0 5 w c The contacts will automatically open when the pressure differential across the filters decreases to approximately 0 4 w c The clogged filter output is energized when th
35. 00 250 112 106 YH 300 76 81 a This is the total amount for both compressors 3802 per com pressor 2 After the compressor and condenser fan have started and operated for approximately 30 minutes observe the operating pressures Compare the operating pressures to the operating pressure curve in the Service Facts 3 Checksystem subcooling Follow the instruction listed on the subcooling charging curve in the Service Facts 4 Repeat Step 1 through Step 3 for each refrigerant circuit 5 To stop the SERVICE TEST turn the main power disconnect switch to the Off position or proceed to the next component start up proc 6 edure Remove electro mechanical test mode connections if applicable Dehumidification Option Momentarily jump across the Test 1 and Test 2 terminals of the LTB1 until the unit enters test mode 7 Table 12 p 36 Once the unit is in the reheat test mode verify that the three way valve has shifted to the reheat position and that the supply temperature rises 10 F more than when cooling mode stage 2 Monitor the suction pressure for 15 minutes The suction pressure should remain within 5 psi of normal cooling operation Heating Start Up Open the main disconnect switch to shut the unit off and to reset the RTRM Follow the Test Guide in Table 12 p 36 to start the unit in the heating mode ReliaTel Control Momentarily jump 38 across the Test 1 and Test 2 terminals on LTB1 on
36. 000 L amp 5 moood ad a CFM EXHAUST O 7 e DEHUMID 4000 ug J3 J6 4moeooh b5oooooooo0i Figure 15 ReliaTel conventional t diagram THERMOSTAT RC hermostat field wiring RTRM coo COOL 1 RT SVX26L EN Installation Figure 16 ReliaTel relative humidity sensor dehumidification option LOW VOLTAGE TERMINAL BLOCK NLTB RELATIVE HUMIDITY 120 013 SENSOR NLTB FIELD SUPPLIED LOCATED ON FRONT 14 15 OF ROOFTOP UNIT ZEE CONTROL BOX 16 17 18 19 E R H RH TUE SUPPLIED CABLE Figure 17 ReliaTel humidistat dehumidification option LOW VOLTAGE TERMINAL BLOCK LTB m ui E 8 HUMIDISTAT LOCATED ON Front FIELD SUPPLIED S ms HF ROOFTOP UNIT 2 10 CONTROL BOX 11 Si te O 14 ae FIELD SUPPLIED WIRE RT SVX26L EN 23 24 Installation Figure 18 Typical field wiring diagrams for optional controls ReliaTel only 5 5075 ASYSTATGGOA OPTION REMOTE 09906 SENSOR Qlu BAYsENs108 ZONE SENSOR we ZONE SENSOR CUT WIRE JUMPER R11 ADJACENT TO TEMPERATURE SLIDES ON ZONE SENSOR WHEN OPTIONAL REMOTE SENSOR IS USED BAY
37. 15 26 1 143 5 10 23 3 121 4 5 20 6 103 0 0 17 8 87 56 15 0 74 65 10 12 2 63 80 15 9 4 54 66 20 6 7 46 94 25 3 8 40 40 30 1 1 34 85 35 1 7 30 18 40 4 4 26 22 45 7 2 22 85 50 10 0 19 96 55 12 8 17 47 60 15 6 15 33 65 18 3 13 49 70 21 1 11 89 75 23 9 10 50 80 26 7 9 297 85 29 4 8 247 90 32 2 7 330 95 35 0 6 528 100 37 8 5 824 RT SVX26L EN 25 Installation Table 6 Space temperature averaging examples EXAMPLE 71 28 REMOTE SENSORS Remote Sensor 1 Remote Sensor 2 4 V V VV e 3VNVNNM 3 TUN 4 7 9 7 9 FYI Fl 2 2 eq Le 2 ZSM 2 gcc ceu Eu TERMINAL 1 TERMINAL 2 EXAMPLE 2 ZSM REMOTE SENSORS Remote Sensor 1 Remote Sensor 2 Remote Sensor 3 VVVVv 3VVVVv 3VVVV Remote Sensor 44 Remote Sensor 6 Remote Sensor 46 L VVVVv js3VVVVv 3VVVV 9 Remote Sensor 47 Remote Sensor 8 Remote Sensor 9 VVVVv V V VM I 78M ZSM 1 TERMINAL 1 TERMINAL 2 L CA O EA mu I I PL ee age EXAMPLE 3 ZSM REMOTE SENSORS Remote Sensor 1 Remote Sensor 42 2 TET VVVV VVVV to 2149 ORC EEUU 29 29 TERMINAL j 1 TERMINAL 2 26 RT SVX26L EN Installation Table 7 Heating Input Rate Btu h a Gas heater operating data 135 000 205 000 Minimum Supply Gas Pressure Natural 3 5 w c 8 0 w c
38. 3 1255 YH 300 50 60HZ 2 Stage Gas Heat with or without Dehumidification 1213 1256 YH 300 50 60HZ Modulating Gas Heat with or without Dehumidification Modul 1213 1029 YH 150 300 50 60HZ 2 Stage Gas Heat with or without Dehumidification DE 200 575 Connections 1213 1030 150 300 50 60HZ Modulating Gas Heat with or without Dehumidification Table 23 Wiring diagrams for units with High Short Circuit Rating SCCR Type of Airflow Schematic Type Voltage Diagram Number Description Constant Volume Power Control Raceway Connection 208 575 208 575 208 575 2313 1579 YS 180 300 2 Stage Gas Heat 1213 1005 YH 150 300 2 Stage Gas Heat 2313 1580 YS 180 300 Modulating Gas Heat 1213 1006 2313 1584 1213 1014 YH 150 300 Modulating Gas Heat YS 180 300 2 Stage Gas Heat YH 150 300 2 Stage Gas Heat 2313 1585 YS 180 300 Modulating Gas Heat 1213 1014 YH 150 300 Modulating Gas Heat 2313 1590 YS 180 300 2 Stage Gas Heat amp Modulating Gas Heat Options Modules 1213 1015 2313 2021 1213 1044 YH 150 300 2 Stage Gas Heat amp Modulating Gas Heat Options Modules YS 180 300 2 Stage Gas Heat YH 150 300 2 Stage Gas Heat 2313 2022 YS 180 300 Modulating Gas Heat 1213 1045 YH 150 300 Modulating Gas Heat Control Box Connections 208 575 2313 2004 YS 180 300 2 Stage Gas Heat 1213 1024 2313 2005 YH 150 240 2 Stage G
39. DETECTOR PLUG RETURN AIR SMOKE DETECTOR SUPPLY AIR SMOKE DETECTOR RELIATEL OPTIONS MODULE SMOKE DETECTOR TO RTOM BOARD RT SVX26L EN Through the Base Gas Utility Option This section contains the instructions for making field connections to the Through the Base Gas Utility Option For gas piping supply and manifold pressure information see the unit installation operation and maintenance guide Field Installed Connections AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury For additional information regarding the safe discharge of capacitors see PROD SVB06A EN Factory Mounted Unit Options AWARNING Outlet Pressure Check Required This unit uses a negative pressure gas valve At start up the outlet pressure should be checked and adjusted if required to a negative 0 2 inches of water column Never adjust the regulator to a positive pressure Failure to follow instructions could result in death or serious injury or equipment damage AWARNING Proper Field Wiring and Grounding Required All fiel
40. Feed control wiring through bushing provided on side panel and into the flexible conduit provided in the heat section of the unit Figure 21 Route wires through loose wire ties provided in unitas Figure 21 5 Tighten the wire ties Secure the excess wire bundle under the wire ties in the outdoor section Do not leave excess wire in the electrical enclosure Use the unit wiring diagram to make the low voltage connections Figure 21 Main power entrance for units with factory mounted disconnect or circuit breaker Main power entrance for units with factory mounted disconnect or circuit breaker RT SVX26L EN Powered and Unpowered Convenience AAWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury For additional information regarding the safe discharge of capacitors see PROD SVBO6A EN Figure 22 Wiring schematic 1272 through 25 ton options Factory Mounted Unit Options AWARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded fiel
41. L1 Red phase B to L2 Yellow phase C to L3 e Close the field supplied main power disconnect switch or circuit protector switch that provides the supply power to the unit AWARNING Live Electrical Components During installation testing servicing and troubleshooting of this product it may be necessary to work with live electrical components Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury e Observe the ABC and CBA phase indicator lights on the face of the sequencer The ABC indicator light will glow if the phase is ABC If the CBA indicator light glows open the disconnect switch or circuit protection switch and reverse any two power wires e Restore the main electrical power and recheck the phasing If the phasing is correct open the disconnect switch or circuit protection switch and remove the phase sequence indicator Compressor Crankcase Heaters Compressors Failure Unit must be powered and crankcase heaters energized at least 8 hours BEFORE compressors are started This will protect the compressors from premature failure Each compressor can be equipped with a crankcase heater The proper operation of the crankcase heater is important to maintain an elevated compresso
42. NATIONAL STATE and LOCAL CODES In addition to local codes the installation must comply with National Electric Code ANSI NFPA NO 70 LATEST REVISION Field connections are made by first removing all access panels on the front of the unit Unscrew the assembly around the outside of the disconnect switch or circuit breaker This assembly is located between the evaporator and heat section of the unit Figure 21 p 30 For downflow configurations the hole in the base section is for both high and low voltage power wiring on down flow units Horizontal units will route through the front plate located directly under the circuit breaker or disconnect panel The hole is sized for 1 1 2 conduit Horizontal units will use the front plate located directly under the circuit breaker panel 2 If the conduit required for your application is larger remove the termination plate and connect to the larger hole using field supplied reducing washers 3 Route the power wires and ground conductor through conduit and into the bottom of the factory installed disconnect switch or circuit breaker Connect the power conductors to the lugs provided Connect the ground wire to the unit ground lug Note Wire size for the length of run should be determined using the circuit ampacity found on the unit nameplate and the N E C 4 Route low voltage class II control wiring through hole in base of unit but not through high voltage conduit
43. NTAL CONDENSATE DRAIN CONNECTION 1 0 IN NPT 24 9 16 CLEARANCE 18 457 624 MM 3 15 16 al 5100 MM CLEARANCE 38 965 MM AS 19 9 167 497 MM 2 51 Figure 5 Unit dimensional data 15 25 tons standard efficiency units 1372 mm 54 173 mm 6 13 16 RS Ww RN NY DOWNFLOW CONDENSATE E d DRAIN CONN 25 mm 1 NPT 7 679 mm XM 26 3 4 EN 151 mm 1643 mm 5 15 16 RW 64 11 16 Q 830 q 32 11 16 S 3091 mm 297 mm 121 11 16 8 15 16 7 _ 4 v Y gt SEE NOTE A 22 mm 7 8 DIA HOLE yA 2138 mm UNIT CONTROL WIRE 68 mm 84 3 16 2 1116 Bes 51 mm 2 DIA HOLE UNIT POWER WIRE Note gt NPT Gas Connection 14 RT SVX26LEN Unit Dimensions Figure 6 Unit dimensional data 127 ton high efficiency units 1372 mm 54 nS DOWNFLOW CONDENSATE i DRAIN CONN 25 mm 1 NPT 26 3 4 gt T a 152 mm P br mm 6 A 64 11 16 GAS CONNECTION SEE NOTE 1 X 843 mm 33316 N 227mm 7 bl 8 15 16 N gt 22 mm 7 87 DIA HOLE 1 gt 2 2138 mm BEN pa UNIT CONTROL WIRE N N 84 3 16 68 mm X N 2 11 16 4 5 S 3091 mm 121 11 16 Pe N Pd 76 mm 3 DIA HOLE UNIT POWER WIRE Note gt Gas Connecti
44. RAE 90 1 2013 e Updated Model Number Description Startup and Wiring Diagrams Sections RT SVX26L EN Introduction Table of Contents Model Number Description 5 General Information 7 Unit Description 7 System Input Devices amp Functions 7 Sensors liv dy edi 9 Unit Inspection 11 Storage issn 11 Unit Clearances 11 Unit Dimensions 12 Unit Weights 17 RIGGING Dawe base 18 Installation 19 Foundation 19 General Unit Requirements 19 Main Unit Power 21 Space Temperature Averaging 25 Factory Mounted Unit Options 30 Circuit Breaker FIYUCB amp Unit Disconnect AG EIS 30 Powered and Unpowered Convenience 31 Return Air Smoke Detector 32 Through the Base Gas Utility Option 35 Preta i oerte oe Epitt 36 Test Modes 36 Verifying Proper Air Flow Units with Belt Drive Indoor Fan 36 Start Ups p 37 Economizer Start Up 37 Compressor Start Up 37 Dehumidification Option 38 Heating Start Up 38 Variable Air Volume Appl
45. SENSO73 BAYSENSO74 ZONE SENSOR ZONE SENSOR ICS WITH OVERRIDE AND ICS WITH SETPOINT OVERRIDE CANCELLATION BUTTON AND CANCELLATION BUTTON BAYFRSTOO3A 1 1 1 1 eic Supply Duct Y x Limil Relurn Duct x1310004001 High Limil Control x1310004002 CONTROL BOX BAYSENSO75 ASYSTAT669A OPTION REMOTE SENSOR elu 5 5110 ZONE SENSOR CUT WIRE JUMPER R11 ADJACENT TO TEMPERATURE SLIDES ON ZONE SENSOR WHEN OPTIONAL REMOTE SENSOR IS USED BAYSENS119 ASYSTAT666A ZONE SENSOR 5 5075 ASYSTAT669A OPTIONAL REMOTE SENSOR 5 025 RT SVX26LEN Installation Space Temperature Averaging Space temperature averaging is accomplished by wiring a number of remote sensors in a series parallel circuit Using the BAYSENS016 or BAYSENSO77 at least four sensors are required to accomplish space temperature averaging Example 1 illustrates two series circuits with two sensors in each circuit wired in parallel The square of any number of remote sensors required Example 2 illustrates three sensors squared in a series parallel circuit Example illustrates the circuit required for this senor Table 5 lists the temperature versus resistance coefficient for all sensing Table 5 Temperature vs resistance Degrees Nominal Resistance F C K Ohms 20 28 9 170 1
46. as Heat YS 180 300 Modulating Gas Heat 1213 1025 YH 150 240 Modulating Gas Heat 1213 1262 YH 300 2 Stage Gas Heat Module Connections 208 575 2313 2050 YS 180 300 2 Stage Gas Heat 1213 1034 YH 150 300 2 Stage Gas Heat 2313 2051 YS 180 300 Modulating Gas Heat 1213 1035 YH 150 300 Modulating Gas Heat Multi zone Variable Air Volume Multi speed Fans Single Zone Variable Air Volume Power 208 575 2313 1579 YS 180 300 2 Stage Gas Heat 1213 1005 YH 150 300 2 Stage Gas Heat 2313 1580 YS 180 300 Modulating Gas Heat 1213 1006 YH 150 300 Modulating Gas Heat 50 RT SVX26L EN Wiring Diagrams Table 23 Wiring diagrams for units with High Short Circuit Rating SCCR Type of Airflow Schematic Type Control Voltage 208 575 Diagram Number 2313 1588 1213 1014 Description YS 180 300 2 Stage Gas Heat YH 150 300 2 Stage Gas Heat 2313 1589 YS 180 300 Modulating Gas Heat 1213 1014 YH 150 300 Modulating Gas Heat 2313 1590 YS 180 300 2 Stage Gas Heat amp Modulating Gas Heat Options Modules 1213 1015 YH 150 300 2 Stage Gas Heat amp Modulating Gas Heat Options Modules Multi zone Variable Air Volume Raceway Connection 208 575 2313 2025 YS 180 300 2 Stage Gas Heat 1213 1044 YH 150 300 2 Stage Gas Heat 2313 2026 YS 180 300 Modulating Gas Heat
47. at low airflow will not develop an airflow velocity that falls within the required 500 to 4000 feet per minute range For these models the design airflow shall be greater than or equal to the minimum cfm specified in the table provided below 10 Failure to follow these instructions will prevent the smoke detector from performing its design function Unit Model Minimum Allowable Airflow with Number Return Air Smoke Detector YHD180 5300 cfm Wall Mounted Relative Humidity Sensor BAYSENS036 Field installed wall mounted humidity sensor is used to control activation of the hot gas reheat dehumidification option Humidity set points can be selected for relative humidity levels between 40 percent and 60 percent by adjusting the DEHUMID setting on the ReliaTel Options Module see RTOM ReliaTel Options Module Optional p 7 Duct Mounted Relative Humidity Sensor 5 5037 Field installed duct mounted humidity sensor is used to control activation of the hot gas reheat dehumidification option Humidity set points can be selected for relative humidity levels between 40 percent and 60 percent by adjusting the DEHUMID setting on the ReliaTel Options Module see RTOM ReliaTel Options Module Optional p 7 Human Interface 5 Inch Color Touchscreen Optional The 5 inch Color Touchscreen Human Interface provides an intuitive user interface to the rooftop unit that speeds up unit commissioning s
48. coil The indoor fan speed is changed by opening or closing the adjustable motor sheave Before starting the SERVICE TEST set the minimum position setpoint for the economizer to 096 using the setpoint potentiometer located on the Economizer Control ECA if applicable ReliaTel Control Using the Service Test Guide in Table 12 momentarily jump across the Test 1 and Test 2 terminals on LTB1 one time to start the Minimum Ventilation Test Once the supply fan has started check for proper rotation The direction of rotation is indicated by an arrow on the fan housing With the fan operating properly determine the total system airflow cfm 1 Measure the actual rpm 2 Measure the amperage atthe supply fan contactor and compare it with the full load amp FLA rating stamped on the motor nameplate a Calculate the theoretical bhp Actual Motor Amps X Motor HP Motor Nameplate Amps b Using the fan performance tables in the unit Service Facts plot the actual rpm Step 1 and the bhp Step 2a to obtain the operating cfm 3 Ifthe required cfm is too low external static pressure is high causing motor horsepower output to be below table value a Relieve supply and or return duct static b Change indoor fan speed and repeat Step 1 and Step 2 4 To increase fan rpm loosen the pulley adjustment set screw and turn sheave clockwise 5 decrease fan rpm loosen the pulley adjustment set screw and turn sh
49. cy Motor B Powered Convenience Outlet i i 6 Single Zone Variable Air Volume oe ling Capacity MBh c pul Motor Digit 21 Communications 150 127 Tons 60Hz _ 7 Multi Speed Standard Motor Options 155 15 Tons 50Hz E 180 15 Tons 60Hz 8 Single Zone Variable Air Volume 0 Without Communications Options 1752 171 Tons 50Hz Oversized Motor 1 Trane Communications Interface 17 1 i 9 Multi Speed Oversized Motor 2 Lontalk Communications 210 177 Tons 60Hz A Single Zone Variable Air Volume Interface 200 20 Tons 50Hz ace 240 20 Tons 60Hz Standard Motor w Shaft 3 Novar 2024 Controls Interface 250 25 Tons 50Hz Grounding Ring 4 3051 Controls Interface B Multi Speed Standard Motor w 5 Novar 3051 Communications 300 25 Tons 60Hz 225 Shaft Grounding Ring Interface with Demand Control Digit 7 Major Design C Single Zone Variable Air Volume Ventilation 9 Sequence 22 Motor w Shaft 6 Building Automation Control i rounding Ring Network Communications cono Mae Type Condenser D Multi Speed Oversized Motor w Interface _ Shaft Grounding Ring BUS rela eae M E VAV Supply Air Temperature Digit 22 Refrigeration System ging Control Standard Motor Option Digit 8 Voltage Selection F VAV Supply Air Temperature O Standard refrigeration system 3 208 230 60 3 Control Oversized Motor B Dehumidification Hot Gas 4 460 60 3 VAV Sup
50. d wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury Powered Convenience Outlet Powered Option FIYCOPO When the powered convenience outlet option is installed the unit will include a dedicated transformer located in the evaporator section of the unit Additionally a service receptacle disconnect switch will be provided on the side wall of the evaporator section The service receptacle switch is shipped in the OFF position The powered outlet comes completely wired from the factory except for 208 volt applications 1 For 208 volt applications disconnect and tape the blue 230 volt wire 2 Then connect the brown 208 volt wire LINE VOLTAGE OPTIONAL POWERED GFCI L1 12 L3 SEE INSET B FOR UNITS W OPTIONAL UNPOWERED GFCI 401A BL Er ns 3 400A RD 5 SRD 4 r L 402A RD 403A BL FU13 404A 405A RD BL 400A 401A BL 8 Bu uce X 5 a 407A BR lt 1 4048 4058 RD BL gt 11 208v 230V wi w2 w3 RD BR
51. d and the piping is properly sized and pitched e Verify that the correct size and number of filters are in place e Inspect the interior of the unit for tools and debris and install all panels in preparation for starting the unit Voltage Imbalance Three phase electrical power to the unit must meet stringent requirements for the unit to operate properly Measure each leg phase to phase of the power supply 27 Installation Each reading must fall within the utilization range stamped on the unit nameplate If any of the readings do not fall within the proper tolerances notify the power company to correct this situation before operating the unit Excessive three phase voltage imbalance between phases will cause motors to overheat and eventually fail The maximum allowable voltage imbalance is 2 percent Measure and record the voltage between phases 1 2 and 3 and calculate the amount of imbalance as follows Voltage Imbalance 100 X AV VD Where AV AV Average Voltage Volt 1 Volt 2 Volt 3 3 e V1 V2 V3 Line Voltage Readings e VD Line Voltage reading that deviates the farthest from the average voltage Example If the voltage readings of the supply power measured 221 230 and 227 the average volts would be 221 230 227 226 Avg 3 VD reading farthest from average 221 e The percentage of Imbalance equals mE 221 2 2 The 2 2 percent imbalance in this examp
52. d notify appropriate sales representative e Verify correct model options and voltage from nameplate e Verify that the installation location of the unit will provide the required clearance for proper operation e Assemble and install the roof curb if applicable Refer to the latest edition of the curb installers guide that ships with each curb kit Fabricate and install ductwork secure ductwork to curb Rigging the unit e Set the unit onto the curb check for levelness e Ensure unit to curb seal is tight and without buckles or cracks e Install and connect a condensate drain line to the evaporator drain connection 19 Installation Factory Installed Economizer e Ensure the standard economizer has been pulled out into the operating position Refer to the economizer Installation Instructions for proper setup Note Low LeakEconomizers do not pull out Refer to Low Leak Economizers Installation Instructions for proper setup e Install all access panels Main Electrical Power Requirements e Verify that the power supply complies with the unit nameplate specifications e 208VAC units are factory wired for 230VAC Line side wiring on TNS1 and TNS3 will need to be moved from 230V terminal to 208V terminal Factory powered convenience outlets also need to be configured Please see Powered Convenience Outlet Powered Option FIYCOPO section of this document e Inspect all control panel components tighte
53. d unoccupied periods The VHR contacts are shown in the de energized position and will switch energize during the above mentioned operating modes Figure 31 VHR relay output 626A BK 626B BK 2 626A BK 627M BK 18 16 FO ZEE VHR TB 17 626B BK 628A BK 5 ING RT SVX26L EN Table 15 Variable air volume mode operation System Mode Fan Auto Fan On DWU Active DWU2 DWU2 Heat DWU Off Heating4 Cool Cooling VAV Cooling DWU or m DWU Active Cooling 2 3 4 DWU Off Cooling or Cooling 121 Heating Off Off4 off4 Notes 1 If Cooling is selected the supply fan will run continuously If VAV Heating is activated the supply fan will run continuously 2 If Daytime Warmup is Activated the supply fan will run continuously 3 Auto changeover between Cooling and Daytime Warmup depends upon the DWU initiate setpoint 4 The fan will be Off any time the system selection switch is Off To configure the proper potentiometer setpoints connect a multi meter across the customer connection header J7 to the pins listed in Table 16 below Table 16 VAV setpoints Supply Air Cooling Setpoint J 7 3 4 Resistance Ohms DC volts Deg F 240 0 97 50 37 280 1 09 52 30 320 1 21 54 24 360 1 32 56 09 410 1 45 58 18 450 1 55 59 80 Supply Air Pressure Setpoint J 7
54. d wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury Important All phases of this installation must comply with NATIONAL STATE and LOCAL CODES In absence of local codes the installation must conform with American National Standard Z223 1a National Fuel Gas Code Latest Revision Field connections are made by first removing the access panel for the heat section on the front of the unit Figure 28 The gas piping assembly ships inside this section and includes the shut off valve a pressure tap for testing and the necessary unions for field connection For through the base access remove the factory provided cap from the base pan opening See Figure 27 w Route field piping through this hole to the dimension shown in Table 11 RT SVX26L EN 4 Place the assembly through the cabinet opening as shown in Figure 28 and make the union connection to the field piping and to the gas train Refer to the unit IOM for checkout procedures Table 11 Piping hole dimension Dimension 13 16 Model YS 150 300 YH 150 300 Figure 27 Through the base opening Supply Air Return Air
55. data kg Net Corner Weights Ib Net Corner Weights kg Weights Weights Unit 25mm Unit 25mm Models 18mm A B D Models 18mm A B D YS 150F 1508 506 390 275 337 YS 150F 684 230 177 125 153 YH 150G 2207 686 588 437 495 YH 150G 1003 312 267 199 225 MEE SU 2226 692 593 441 499 Loud 1010 314 269 200 227 Reheat unit Reheat unit YS 155F 1958 628 534 387 406 YS 155F 888 285 242 176 184 YS 180F 1925 666 505 343 410 YS 180F 873 302 229 156 186 YH 180G 2176 651 592 444 490 YH 180G 989 296 269 202 223 Y 1808 2194 657 597 447 494 1806 995 298 271 203 224 Reheat unit Reheat unit YS 175F 2007 637 547 400 421 YS 175F 910 289 248 181 191 YS 210F 2007 639 547 399 419 YS 210F 910 290 248 181 190 YH 210G 2140 656 571 418 495 YH 210G 973 298 259 190 225 06 2159 662 576 422 499 979 300 261 192 226 Reheat unit Reheat unit YS 200F 2069 659 551 402 455 YS 200F 938 299 250 182 206 YS 240F 2069 659 551 402 455 YS 240F 938 299 250 182 206 YH 240G 2211 705 581 421 504 YH 240G 1005 320 264 191 229 ae 2231 711 586 425 509 YH 240G 1012 322 266 193 231 Reheat unit Reheat unit YS 250F 2054 655 555 403 442 YS 250F 932 297 252 183 200 YS 300F 2054 655 555 403 442 YS 300F 932 297 252 183 200 YH 300G 2245 720 593 423 510 YH 300G 1021 327 269 192 232 Figure 10 Corner weights CENTER OF GRAVITY 4
56. dc e System Failure less than 1 Vdc approximately 0 75 Vdc e Test Mode voltage alternates between 32 Vdc and 0 75 Vde Heat Failure Measure the voltage between terminals J6 7 and J6 6 e Heat Operating approximately 32 Vdc e Heat Off less than 1 Vdc approximately 0 75 Vdc e Heating Failure voltage alternates between 32 Vdc and 0 75 Vdc Cool Failure Measure the voltage between terminals J6 8 and J6 6 e Cool Operating approximately 32 Vdc e Cool Off less than 1 Vdc approximately 0 75 Vdc e Cooling Failure voltage alternates between 32 Vdc and 0 75 Vdc Service Failure Measure the voltage between terminals J6 10 and J6 6 e Clogged Filter Approximately 32 Vdc e Normal Less than 1 Vdc approximately 0 75 Vdc e Fan Failure voltage alternates between 32 Vdc and 0 75 Vdc Note If the Condensate Overflow Switch is closed the unit will not operate Check to make sure the float position is not in a tripped condition and verify an open between wires connecting to RTOM J6 1 J6 2 To use LEDs for quick status information at the unit purchase 5 5110 ZSM and connect wires with alligator clamps to terminals 6 through 10 Connect each respective terminal wire 6 through 10 from the Zone Sensor to the unit J6 terminals 6 through 10 Note If the system is equipped with a programmable zone sensor BAYSENS 119 the LED indicators will not function while the BAYSENS110 is connected
57. dition if the optional factory installed stainless steel heat exchanger fails because of a manufacturing defect within ten years from the date of start up Warrantor will furnish without charge a replacement heat exchanger Any local transportation related service labor and diagnosis calls are not included In addition if the sealed motor compressor fails because of a manufacturing defect within the second through fifth year from the date of original purchase Warrantor will furnish without charge the required replacement compressor Warrantor s obligations and liabilities under this warranty are limited to furnishing EO B Warrantor factory or warehouse replacement parts for Warrantor s products covered under this warranty Warrantor shall not be obligated to pay for the cost of lost refrigerant No liability shall attach to Warrantor until products have been paid for and then liability shall be limited solely to the purchase price of the equipment under warranty shown to be defective THE WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES AND LIABILITIES WHETHER IN CONTRACT OR IN NEGLIGENCE EXPRESS OR IMPLIED IN LAW OR IN FACT INCLUDING BUT NOT SPECIFICALLY LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR USE AND IN NO EVENT SHALL WARRANTOR BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES Some states do not allow limitations on how long an implied warranty lasts or do n
58. dulate to maintain this temperature Use the following procedure for set up 1 Locate the RTOM 2 Locate the Discharge Air SP or DA CFM SP 3 Adjust the variable resistor to match the desired leaving temperature a Range 50 F 150 F i Clockwise Increase Temperature ii Counterclockwise Decrease Temperature 29 Factory Mounted Unit Options Circuit Breaker FIYUCB amp Unit Disconnect FIYUDC AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury For additional information regarding the safe discharge of capacitors see PROD SVB06A EN AWARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury Important All phases of this installation must comply with
59. e additional time if continuing from previous component start up or until the desired start up component Test is started Note At initial start up modulating gas heat exchangers can produce a resonance that will subside after the break in period Variable Air Volume Applications Multi zone Traditional VAV Traditional VAV Standalone Operation If a traditional VAV unit is required to operate without ICS BAS or other front end controller a jumper must be placed between J6 2 and J6 4 of the RTRM to allow local standalone control Supply Air Temperature Control Occupied Cooling and Heating The RTRM is designed to maintain a selectable supply air temperature of 40 F to 80 F with a 3 5 F deadband To reduce the risk of coil freezing it is not recommended to set the supply air temperature below 50 F In cooling mode if the supply air temperature is more than 3 5 F warmer than the selected temperature a stage of cooling will be turned on if available Also if the supply air temperature is more than 3 5 F cooler than the selected temperature a stage of cooling will be turned off At very low airflow the unit may cycle stages on and off to maintain an average discharge air temperature outside the 7 degrees deadband If the unit has modulating gas heat it can be made to discharge heating with VAV control This is done by placing a contact closure across the Changeover Input on the RTAM
60. e exhaust fan setpoint supply air tempering Frostat and smoke detector Refer to system input devices and functions for operation RTAM ReliaTel Air Handler Module Standard with Traditional VAV RTAM receives information from the supply duct static pressure transducer Attached to the module are the supply air heating potentiometer supply air cooling setpoint potentiometer supply pressure setpoint potentiometer static pressure deadband potentiometer morning warm up setpoint potentiometer reset setpoint potentiometer and 5 DIP switches System Input Devices amp Functions The RTRM must have a zone sensor or thermostat input in order to operate the unit The flexibility of having several mode capabilities depends upon thetype of zone sensor or thermostat selected to interface with the RTRM The descriptions ofthe following basic Input Devices used within the RTRM network are to acquaintthe operator with their function as they interface with the various modules Refer to the unit s electrical schematic for the specific module connections The following controls are available from the factory for field installation Supply Fan Failure Input Optional The Fan Failure Switch FFS can be connected to sense indoor fan operation If air flow through the unit is not General Information proven by the differential pressure switch connected to the RTOM factory set point 0 07 w c within 40 seconds nominally the RTRM
61. e supply fan is operating and the clogged filter switch has been closed for at least 2 minutes The system will continue to operate regardless of the status of the filter switch Please note that on units equipped with factory installed MERV 13 filters a clogged filter switch with different pressure settings will be installed This switch will close when the differential pressure is approximately 0 8 w c and open when the differential falls to 0 7 w c Compressor Disable CPR1 2 This input incorporates the low pressure control LPC of each refrigeration circuit and can be activated by opening a field supplied contact installed on the LTB If this circuit is open before the compressor is started the compressor will not be allowed to operate Anytime this circuit is opened for 1 continuous second during compressor operation the compressor for that circuit is immediately turned The compressor will not be allowed to restart for a minimum of 3 minutes should the contacts close If four consecutive open conditions occur during the first three minutes of operation the compressor for that circuit will be locked out a diagnostic communicated to the remote panel if installed and a manual reset will be required to restart the compressor Phase Monitor The Phase Monitor is a three phase line monitor module that protects against phase loss phase reversal and phase unbalance It is intended to protect compressors from
62. eave counterclockwise 6 Ifthe required cfm is too high external static pressure is low causing motor horsepower output to be above table value change indoor fan speed and repeat Step 1 and Step 2 7 stop the SERVICE TEST turn the main power disconnect switch to the Off position or proceed to the next component start up procedure Remove electro mechanical test mode connections if applicable RT SVX26L EN Start Up Economizer Start Up Using the Service Test Guide in Table 12 p 36 momentarily jump across the Test 1 and Test 2 terminals on LTB1 one time to start the Minimum Ventilation Test 1 Setthe minimum position setpoint for the economizer to the required percentage of minimum ventilation using the setpoint potentiometer located on the Economizer Control ECA The economizer will drive to its minimum position setpoint exhaust fans if applicable may start at random and the supply fan will start when the SERVICE TEST is initiated The Exhaust Fan will start anytime the economizer damper position is equal to or greater than the exhaust fan setpoint 2 Verify that the dampers stroked to the minimum position 3 Momentarily jump across the Test 1 and Test 2 terminals on LTB one additional time if continuing from previous component start up or until the desired start up component Test is started 4 Verify that the dampers stroked to the full open position 5 To stop the SERVICE TEST turn
63. ended intervals between filter changes and coil cleaning is required Periodic checks and maintenance procedures must be performed on the smoke detector to insure that it will function properly For detailed instructions concerning these checks and procedures refer to the appropriate section s of the smoke detector Installation and Maintenance Instructions provided with the literature package for this unit Important Refer to the service literature provided for testing and other information about the smoke detector or if problems are encountered 34 Figure 26 Smoke detector wiring scheme WIRING SCHEME FOR UNIT WITH BOTH RETURN AIR AND SUPPLY AIR SMOKE DETECTORS 97 14 97 10 y7 9 RTOM e 3 2 O PPM25 36AwiBL W47 RD 43A RD 46 W52iRD WEG PE 43A WA RD w46 RD W53 RD RD WB3 RD BL 9 9 PPr22 2 3 1 2 PPF23 4 2 3 PPm22 1 2 3 0 5 RD w54 w49 m RD RD 19 3A RD was T RD o O 9 10 6 17 S MU is 504 52 WIRING INSTRUCTIONS 1 CONNECT PLUGS TOGETHER AS SHOWN NOTES 1 REFER TO THIS DRAWING FOR SMOKE DETECTOR INTERFACE TO UNIT SEE UNIT DIAGRAMS FOR BALANCE OF WIRING LEGEND PPF22 PPM22 RETURN AIR SMOKE DETECTOR PLUG PPF23 PPM23 SUPPLY AIR SMOKE
64. ensor is designed to mount directly to the sheet metal duct Each kit contains two sensors The return air duct sensor X1310004001 is set to open at 135 The supply air duct sensor X1310004002 is set to open at 240 F The control can be reset after the temperature has been lowered approximately 25 F below the cutout setpoint Thermostat BAYSTAT150 This thermostat is a multi stage 3 heat 2 cool auto changeover digital display thermostat It is a programmable thermostat and a 7 day programmable stat with night setback shall be available In addition it is wall mounted General Information Thermostat BAYSTAT151 This thermostat is a single stage 1 heat 1 cool auto changeover digital display thermostat It is a non programmable wall mounted thermostat Thermostat BAYSTAT 155 This thermostat is a multi stage 3 heat 2 cool auto changeover digital display thermostat It is a non programmable wall mounted thermostat and it can be used for Economizer Operation Smoke Detector Sensor Optional This sensor is only applicable on units equipped with a RTOM It provides high limit shutdown of the unit and requires a manual reset The sensor is used to detect smoke due to fire in the air conditioning or ventilation ducts Notes The supply and return air smoke detectors are designed to shut off the unit if smoke is sensed in the supply air stream or return air stream This function is performed by samp
65. ethod 1 If the Zone Sensor Module ZSM is equipped with a remote panel with LED status indication you can checkthe unit within the space If the 75 does not have LEDs use Method 2 45 BAYSENS110 and BAYSENS119 have the remote panel indication feature The LED descriptions are listed below e LED 1 System On during normal operation Off if a system failure occurs or the LED fails Flashing indicates test mode e LED 2 Heat when the heat cycle is operating Off when the heat cycle terminates or the LED fails Flashing indicates a heating failure e LED 3 Cool when the cooling cycle is operating Off when the cooling cycle terminates or the LED fails Flashing indicates a cooling failure e LED 4 Service On indicates a clogged filter Off during normal operation RT SVX26L EN Flashing indicates an evaporator fan failure or a Condenser Overflow Switch COF failure The following is the complete listing of indication causes System Failure Check the voltage between terminals and 9 on J6 it should read approximately 32 Vdc If no voltage is present a System failure has occurred Refer to Step 4 in the previous section for the recommended troubleshooting procedure Heating Failure Verify Heat Failure by Ignition Module IGN LED indicator OFF No Power or Failure ON Normal Slow Flash Normal Heat Call Fast Flash Error Code
66. han personal family or household purposes A 5 year limited warranty is provided for the optional Low Leak Economizer when combined with the optional FDD Fault Detection amp Diagnostics option RT SVX26L EN 53 The manufacturer optimizes the performance of homes and buildings around the world A business of Ingersoll Rand the leader in creating and sustaining safe comfortable and energy efficient environments the manufacturer offers a broad portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www IRCO com The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice 2015 Trane All rights reserved RTSVX26LEN 21 Jan 2015 We are committed to using environmentally Supersedes RT SVX26K EN 27 2014 conscious print practices that reduce waste Ingersoll Rand
67. harge all energy storing devices such as capacitors before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized When necessary to work with live electrical components have a qualified licensed electrician or other individual who has been trained in handling live electrical components perform these tasks Failure to follow all of the recommended safety warnings provided could result in death or serious injury ReliaTel Control The RTRM has the ability to provide the service personnel with some unit diagnostics and system status information Before turning the main power disconnect switch Off follow the steps below to check the ReliaTel Refrigeration Module RTRM All diagnostics and system status information stored in the RTRM will be lost when the main power is turned Off To prevent injury or death from electrocution it is the responsibility of the technician to recognize this hazard and use extreme care when performing service procedures with the electrical power energized 1 Verify that the Liteport LED on the RTRM is burning continuously If the LED is lit go to Step 3 2 Ifthe LED is not lit verify that 24 Vac is presence between J1 1 and J1 2 If 24 Vac is present proceed to Step 3 If 24 Vac is not present check the unit main power supply check transformer TNS1 Proceed to Step 3 if necessary 3 Utilizing Method 1 or Method 2 in t
68. he System Status Checkout Procedure check the following System status Heating status Cooling status If a System failure is indicated proceed to Step 4 If no failures are indicated proceed to Step 5 4 Ifa System failure is indicated recheck Step 1 and Step 2 f the LED is not lit in Step 1 and 24 Vac is present in Step 2 the RTRM has failed Replace the RTRM 5 If no failures are indicated use one of the TEST mode procedures described in Start Up p 37 to start the 44 unit This procedure will allow you to check all of the RTRM outputs and all of the external controls relays contactors etc that the RTRM outputs energize for each respective mode Proceed to Step 6 6 Step the system through all of the available modes and verify operation of all outputs controls and modes If a problem in operation is noted in any mode you may leave the system in that mode for up to one hour while troubleshooting Refer to the sequence of operations for each mode to assist in verifying proper operation Make the necessary repairs and proceed to Step 7 and Step 8 7 Ifno abnormal operating conditions appear in the test mode exit the test mode by turning the power Off at the main power disconnect switch 8 Refer to the individual component test procedures if other microelectronic components are suspect System Status Checkout Procedure System Status is checked by using one of the following two methods M
69. hese final checks before leaving the unit e Program the Night Setback NSB panel if applicable for proper unoccupied operation Refer to the programming instructions for the specific panel e Verify that the Remote panel System selection switch Fan selection switch and Zone Temperature settings for automatic operation are correct e Inspect the unit for misplaced tools hardware and debris e Verify that all exterior panels including the control panel doors and condenser grilles are secured in place e Close the main disconnect switch or circuit protector switch that provides the supply power to the unit s terminal block or the unit mounted disconnect switch 40 RT SVX26L EN Maintenance Make sure all personnel are standing clear of the unit before proceeding The system components will start when the power is applied Fan Belt Adjustment Belt Drive Units AAWARNING Rotating Components The following procedure involves working with rotating components Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in rotating components cutting and slashing technician which could result in death or serious injury The fan belts must be inspected periodically to assure proper unit operation Replacement is necessary if the
70. hortens unit troubleshooting times and enhances preventative maintenance measures The human interface includes several features including e Data trending capabilities by means of time series graphs e Historical alarm messages e Real time sensor measurements e On board system setpoints e USB port that enables the downloading of component runtime information as well as trended historical sensor data e Customized reports RT SVX26L EN Unit Inspection As soon as the unit arrives at the job site e Verify that the nameplate data matches the data on the sales order and bill of lading including electrical data e Verify that the power supply complies with the unit nameplate specifications e Visually inspect the exterior of the unit including the roof for signs of shipping damage e Visually inspect the internal components for shipping damage as soon as possible after delivery and before it is stored Do not walk on the sheet metal base pans e fconcealed damage is discovered notify the carrier s terminal of damage immediately by phone and by mail Concealed damage must be reported within 15 days Request an immediate joint inspection of the damage by the carrier and the consignee Do notremove damaged material from the receiving location Take photos of the damage if possible The owner must provide reasonable evidence that the damage did not occur after delivery e Notify the appropriate sales re
71. ications Multi zone Traditional 38 Final System Set Up 40 Maintenance 41 Fan Belt Adjustment Belt Drive Units 41 Monthly Maintenance 42 Final Process 43 Troubleshooting 44 4 ReliaTel Control 44 System Status Checkout Procedure 44 Resetting Cooling and Heating Lockouts 45 Zone Temperature Sensor ZTS Service Indi CAOS 46 Zone Temperature Sensor ZTS Test 46 Programmable amp Digital Zone Sensor Test 47 Wiring Diagrams 49 Warranty Ox 52 RT SVX26L EN Model Number Descriptions Y S D 1 5 0 F 3 R H A A 1 2 3 5 6 7 8 9 10 11 12 All products are identified by a Z QGasHeat SS Ht Ex High C Hinged Access MERV 8 Filters multiple character model number that Digit 11 Minor Design D Standard Panels MERV 13 Filters precisely identifies a particulartype of Sequence E Hinged Access MERV 13 Filters unit An explanation of the Mi Digit 17 Condenser Coil alphanumeric identification code is Digit 12 13 Service Sequence protection provided Its use the oi Microchannel Condenser Mr on owner operator installing 1 Standard Coil With Hail Guard contractors and service engineers to 4 CompleteCoat Condenser Cail a i 3
72. is manual Transformers rated greater than 50 Vac are equipped with internal circuit breakers If a circuit breaker trips turn Off all power to the unit before attempting to reset it The transformer is located in the control panel The circuit breaker is located on the left side of the transformer and can be reset by pressing in on the black reset button 21 Installation Controls using 24 Vac Before installing any connecting wiring refer to Unit Dimensions p 12 for the electrical access locations provided on the unit and Table 3 p 22 for AC conductor sizing guidelines Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors could result in equipment damage 1 Use copper conductors unless otherwise specified 2 Ensurethatthe AC control wiring between the controls and the unit s termination point does not exceed three 3 ohms conductor for the length of the run Note Resistance in excess of 3 ohms per conductor could cause component failure due to insufficient AC voltage supply 3 Besure to check all loads and conductors for grounds shorts and mis wiring 4 Do not run the AC low voltage wiring in the same conduit with the high voltage power wiring 5 Route low voltage wiring per illustrations on the next page Table3 Electromechanical thermostat 24 Vac conductors with ReliaTel Distance from Unit to
73. ith soap and warm water after handling Storage Take precautions to prevent condensate from forming inside the unit s electrical compartments and motors if e The unit is stored before it is installed or e The unit is set on the roof curb and temporary heat is provided in the building Isolate all side panel service entrances and base pan openings e g conduit holes S A and R A openings and flue openings from the ambient air until the unit is ready for start up Note Do not use the unit s heater for temporary heat without first completing the start up procedure detailed under Start Up p 37 The manufacturer will not assume any responsibility for equipment damage resulting from condensate accumulation on the unit s electrical and or mechanical components Unit Clearances Figure 1 p 12 illustrates the minimum operating and service clearances for either a single or multiple unit installation These clearances are the minimum distances necessary to assure adequate serviceability cataloged unit capacity and peak operating efficiency Providing less than the recommended clearances may result in condenser coil starvation short circuiting of exhaust and economizer airflows or recirculation of hot condenser air 11 Unit Dimensions Figure 1 NO 1 12 WH TE TH TO UR CL ME CLEARANCE SIDE BY SIDE NOTE 2 S FOR HORIZONTAL DISC IS MEASUREMENT IS MINIMIZ
74. ks into the conditioned space Failure to follow instructions could result in equipment and property damage Horizontal Units Notes e For units with optional Condensate Overflow Switch the switch will not work properly if unit is not level or slightly sloped toward switch Toassure proper condensate flow during operation the unit and the curb must be level If the unit is installed at ground level elevate it above the snow line Provide concrete footings at each support location with a full perimeter support structure or a slab foundation for support Refer to Table 1 p 17 and Table 2 p 17 for the unit s operating and point loading weights when constructing a footing foundation If anchoring is required anchor the unit to the slab using hold down bolts or isolators Isolators should be installed to minimize the transmission of vibrations into the building For rooftop applications if anchoring is required anchor the unit to the roof with hold down bolts or isolators Check with a roofing contractor for proper waterproofing procedures Ductwork Elbows with turning vanes or splitters are recommended to minimize air noise dueto turbulence and to reduce static pressure When attaching the ductwork to the unit provide a water tight flexible connector at the unit to prevent operating sounds from transmitting through the ductwork RT SVX26L EN All outdoor ductwork between the unit and the struct
75. ld installation instructions apply to downflow only Horizontal return air smoke detectors require no field installation When a unit is ordered with a downflow economizer and areturn air smoke detector as factory installed options the return air smoke detector cannot be completely installed because the economizer when it is in the shipping position is occupying the space where the return air smoke detector is to be installed The partial assembly and set up required for each factory installed economizer must be completed up to the point where the barometric relief hood is to be installed into the unit Priorto this operation go to Step 5 ofthis instruction and perform the operations described there After this is completed the economizer installation is to be completed in its entirety as outlined in the installation guide Smoke Detector Installation Important The shipping screw that holds the barometric relief damper must be removed before proceeding with the smoke detector installation After completion ofthe economizer installation as outlined above proceed with the installation of the return air smoke detector as follows 32 AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized Verify with an appropriate vol
76. le exceeds the maximum allowable imbalance of 2 0 percent This much imbalance between phases can equal as much as a 20 percent current imbalance with a resulting increase in motor winding temperatures that will decrease motor life Ifthe voltage imbalance is over 2 percent notify the proper agencies to correct the voltage problem before operating this equipment Electrical Phasing Three Phase Motors The compressor motor s and the supply fan motor are internally connected for the proper rotation when the incoming power supply is phased as A B C Proper electrical supply phasing can be quickly determined and corrected before starting the unit by using an instrument such as an Associated Research Model 45 Phase Sequence Indicator and following the steps below 28 AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury e Turn the field supplied disconnect switch that provides power to the main power terminal block or to the Line side ofthe optional factory mounted disconnect switch to the Off position e Connect the phase sequence indicator leads to the terminal block or to the Line side of the optional factory mounted disconnect switch as follows Black phase A to
77. le of delivering up to 25 in Ib of torque and is powered by 24 Vac RTCI ReliaTel Trane Communication Interface Optional This module is used when the application calls for an ICS building management type control system It allows the control and monitoring of the system through an ICS panel The module can be ordered from the factory or ordered as a kitto be field installed Follow the installation instruction that ships with each kit when field installation is necessary RT SVX26L EN RLCI ReliaTel LonTalk Communication Interface Optional This module is used when the application calls for an ICS building managementtype control system that is LonTalk Itallows the control and monitoring ofthe system through an ICS panel The module can be ordered from the factory or ordered as a kit to be field installed Follow the installation instruction that ships with each kit when field installation is necessary RBCI ReliaTel BACnet Communications Interface Optional This module is used when the application calls for an open BACnet protocol It allows the control and monitoring of the system through an ICS panel The module can be ordered from the factory or as a kit to be field installed Follow the installation instructions that ships with each kit when field installation is necessary RTOM ReliaTel Options Module Optional The RTOM monitors the supply fan proving clogged filter supply air temperatur
78. ling the airflow entering the unit at the return air opening Follow the instructions provided below to assure that the airflow through the unit is sufficient for adequate sampling Failure to follow these instructions will prevent the smoke detectors from performing it s design function Airflow through the unit is affected by the amount of dirt and debris accumulated on the indoor coil and filters To insure that airflow through the unit is adequate for proper sampling by the return air smoke detector complete adherence to the maintenance procedures including recommended intervals between filter changes and coil cleaning is required Periodic checks and maintenance procedures must be performed on the smoke detector to insure that it will function properly For detailed instructions concerning these checks and procedures refer to the appropriate section s of the smoke detector Installation and Maintenance Instructions provided with the literature package for this unit In order for the supply air smoke detector or return air smoke detector to properly sense smoke in the supply air stream or return air stream the air velocity entering the smoke detector unit must be between 500 and 4000 feet per minute Equipment covered in this manual will develop an airflow velocity that falls within these limits over the entire airflow range specified in the evaporator fan performance tables There are certain models however if operated
79. luminum coils Direct drive vertical discharge condenser fans are provided with built in thermal overload protection The ReliaTel Control Module is a microelectronic control system that is referred to as Refrigeration Module RTRM The acronym RTRM is used extensively throughout this document when referring to the control system network This module through Proportional Integral control algorithms perform specific unit functions that governs unitoperation in responseto zone temperature supply air temperature and or humidity conditions depending on the application The stages of capacity control for these units are achieved by starting and stopping the compressors The RTRM is mounted in the control panel and is factory wired to the respective internal components The RTRM receives and interprets information from other unit modules sensors remote panels and customer binary contacts to satisfy the applicable request for cooling Economizer Control Actuator ReliaTel Control The ECA monitors the mixed air temperature return air temperature minimum position setpoint local or remote power exhaust setpoint CO2 setpoint CO2 and ambient dry bulb enthalpy sensor or comparative humidity return air humidity against ambient humidity sensors if selected to control dampers to an accuracy of 5 percent of stroke The actuator is spring returned to the closed position any time that power is lost to the unit It is capab
80. n any loose connections e Connect properly sized and protected power supply wiring to a field supplied installed disconnect switch and to the main power terminal block HTB1 in the unit control panel e Install proper grounding wires to an earth ground Note All field installed wiring must comply with NEC and applicable local codes Electric Heat Requirements e Verify that the power supply complies with the electric heater specifications on the unit and heater nameplate e Inspect the heater junction box and control panel tighten any loose connections e Check electric heat circuits for continuity e Low Voltage Wiring and DC Requirements e Install the zone thermostat with or without switching subbase e Connect properly sized control wiring to the proper termination points between the zone thermostat and the unit control panel Condensate Drain Configuration An evaporator condensate drain connection is provided on each unit Refer to Unit Dimensions p 12 for the appropriate drain location A condensate trap must be installed at the unit due to the drain connection being on the negative pressure side of the fan Install the P Trap using the guidelines in Figure 12 A condensate drain line must be connected to the P Trap Pitch the drain lines at least V2 inch for every 10 feet of horizontal run to assure proper condensate flow Do not allow the horizontal run to sag causing a possible double 20
81. nit one at a time when a jumper is installed across the test terminals The unit will start the first test step and change to the next step every 30 seconds At the end of the test mode control of the unit will automatically revert to the applied System control method For unit test steps test modes and step resistance values to cycle the various components refer to Table 12 Table 12 Service test guide for component operation TEST Comp Comp Heat Heat STEP MODE Fan 1 2 1 2 Ohm Minimum Fan on Position of 2 2K Setpoint 1 0 Minimum Select Ventilation On able off om Economizer 2 Test Open On Open Off Off Off Off 3 3K CoolStage 2 Minimum on of off Of 4 7K 1 Position 40 On onb 6 8K osition 5 9 Reheat On Minimum On On Off Off 33K gic Heat Stage 1 On Minimum Off Off On Off 10K Heat Stage 2 On Minimum Off Off On On 15K a The exhaust fan will turn on anytime the economizer damper position is equal b The condenser fans will operate any time a compressor is On c Steps for optional accessories and non applicable modes in unit will be skipped 36 Verifying Proper Air Flow Units with Belt Drive Indoor Fan Much of the systems performance and reliability is closely associated with and dependent upon having the proper airflow supplied both to the space that is being conditioned and across the evaporator
82. omfort building management system Remote Zone Sensor BAYSENS016 This bullet type temperature sensor can be used for outside air ambient sensing return air temperature sensing supply air temperature sensing and remote temperature sensing uncovered Wiring procedures vary according to the particular application and equipment involved Refer to the unit s wiring diagrams for proper connections Remote Zone Sensor BAYSENS075 This electronic sensor can be used with BAYSENS119 Remote Panels When this sensor is wired to a BAYSENS119 Remote Panel wiring must be 18 AWG Shielded Twisted Pair Belden 8760 or equivalent Refer to the specific Remote Panel for wiring details Wireless Zone Sensor BAYSENS050 This electronic sensor features five system settings Auto Off Cool Heat and Emergency Heat and with On and Auto fan settings It is a manual or auto changeover control with dual setpoint capability Other features include a timed override function lockable system settings and Fahrenheit or Celsius temperature display Included with the wireless zone sensor will be a receiver that is to be mounted inside the unit a mounting bracket and a wire harness High Temperature Sensor BAYFRST003 This sensor connects to the RTRM Emergency Stop Input on the LTB and provides high limit shutdown of the unit The sensor is used to detect high temperatures due to fire in the air conditioning or ventilation ducts The s
83. on Figure 7 Unit dimensional data 15 25 tons high efficiency units 1629 mm 64 1 8 C Tes Sag 2 DOWNFLOW CONDENSATE p x T DRAIN CONN 25 mm 1 679 mm 26 3 4 7 SA 1643 mm 64 11 16 GAS CONNECTION SEE NOTE 1 843 mm i 3091 mm 33 3 16 2 121 11 16 mE 8 15 16 22 mm 7 8 DIA HOLE A PA UNIT CONTROL WIRE 2138 mm 84 3 16 2 11 16 76 mm 3 DIA HOLE UNIT POWER WIRE Note gt Gas Connection RT SVX26L EN 15 Unit Dimensions Figure 8 Unit dimensional data 15 25 tons standard efficiency units 1272 25 tons high efficiency units 38 MM 1 1 2 PERIMETER 1 116 7 8 CURB FLANGE 357 MM 14 1 16 Figure 9 Horizontal duct dimensional data 15 25 tons standard efficiency units 1212 25 tons high efficiency units CLEARANCE 1219 MM 48 CLEARANCE 1524 MM 60 FILTER ACCESS DOOR HORIZONTAL UNITS ONLY gt M 5 A HORIZONTAL 1180 MM CONDENSATE S 46 7 16 DRAIN 673 MM CONNECTION p 1 2 y 1 0 IN NPT 709MM 100 MM CLEARANCE 965 MM 38 CLEARANCE 457 MM 18 27 9 1 e 3 15 16 611 MM 24 1 16 w 51 MM 290S 16 RT SVX26L EN Unit Weights Table 1 Typical unit weights and point loading data Ib Table 2 Typical unit weights and point loading
84. onent required for the Default Mode to operate Unit Operation Without a Zone Sensor This procedure is for temporary operation only The economizer and condenser fan cycling functions are disabled 47 Troubleshooting AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury 1 Open and Lock the unit disconnect switch 2 Remove the Outside Air Sensor OAS from the condenser section of unit 3 Use two 2 wire nuts to individually cap the wires Locate the RTRM J6 Connect two 2 wires to terminals J6 1 and 2 5 Connect the sensor OAS using two wire nuts to the two 2 field supplied wires that were connected to terminals 1 and 2 on J6 Unit Economizer Control ECA Troubleshooting ReliaTel Control Verify Economizer Status by Economizer Actuator ECA LED indicator e OFF No Power or Failure ON Normal OK to Economize Slow Flash Normal Not OK to Economize e Fast Flash 1 4 Second 2 Seconds Off Error Code Communications Failure e Pulse Flash 1 30 Second 1 4 Second Off 2 Seconds between pulse sequences Error Code e 1 Flash Actuator Fault e 2Flashes CO2 Sensor e Flashes RA Humidity Sensor e 4Flashes RA Temp Sensor e 5
85. optional factory installed nonfused disconnect switch or circuit breaker a field supplied disconnect switch must be installed at or near the unit in accordance with the National Electrical Code NEC latest edition RT SVX26L EN Main Unit Power AWARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury Standard Wiring The electrical service must be protected from over current and short circuit conditions in accordance with NEC requirements Protection devices must be sized according to the electrical data on the nameplate e If the unit is not equipped with an optional factory installed nonfused disconnect switch or circuit breaker a field supplied disconnect switch must be installed at or near the unit in accordance with the National Electrical Code NEC latest edition e Location of the applicable electrical service entrance is illustrated in Unit Dimensions p 12 Complete the unit s power wiring connections onto either the main terminal block HTB1 inside the unit control panel the factory mounted nonfused disconnect switch UCD or circuit breaker
86. ot allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state 52 Trane 2701 Wilma Rudolph Blvd Clarksville TN 37040 1008 Attention Manager Product Service GW 602 4800 Models 20 Tons and Greater for Commercial Use The Company warrants for a period of 12 months from initial start up or 18 months from date of shipment whichever is less that the Company products covered by this order 1 are free from defects in material and workmanship and 2 have the capacities and ratings set forth in the Company s catalogs and bulletins provided that no warranty is made against corrosion erosion or deterioration In addition if the sealed motor compressor fails because of a manufacturing defect within the second through fifth year from the date of original purchase Warrantor will furnish without charge the required replacement compressor Finally ifthe optional factory installed stainless steel heat exchanger fails because of a manufacturing defect within ten years from the date of start up Warrantor will furnish without charge a replacement heat exchanger Any local transportation related service labor and diagnosis calls are not included The Company s obligations and liabilities under this warranty are limited to furnishing f o b factory or
87. percent Lead Lag Control Dual Circuit Only Lead Lag is a selectable input located on the RTRM The RTRM is configured from the factory with the Lead Lag control disabled To activate the Lead Lag function simply cut the wire connected to J3 8 at the RTRM When it is activated each time the designated lead compressor is shut off due to the load being satisfied the lead compressor or refrigeration circuit switches When the RTRM is powered up i e after a power failure the control will default to the number one circuit compressor RT SVX26L EN Evaporator Frost Control This input incorporates the Frostat control FOS mounted in the indoor coil and can be activated by closing a field supplied contact installed in parallel with the FOS If this circuit is closed before the compressor is started the compressor will not be allowed to operate Anytime this circuit is closed for 1 continuous second during compressor operation the compressor for that circuit is immediately turned Off The compressor will not be allowed to restart for a minimum of 3 minutes should the FOS open Sensors Note Zone sensor required for units configured for Single Zone VAV indoor fan system control to enable Single Zone VAV functionality Zone Sensor Module ZSM BAYSENS106 This electronic sensor features three system switch settings Heat Cool and Off and two fan settings On and Auto It is a manual changeover control with single
88. ply Air Temperature Reheat 4 14 W 575 60 3 Control Standard Motor w Shaft e 2 K 380 60 3 Grounding Ring Digit 23 Refrigeration Controls D 380 415 50 3 VAV Supply Air Temperature 0 Without Refrigeration Controls Digit 9 Unit Controls R Reliatel Digit 10 Heating Capacity H Gas Heat High L Gas Heat Low V Gas Heat SS Ht Ex Modulating X Gas Heat SS Ht Ex Low RT SVX26L EN Control Oversized Motor w Shaft Grounding Ring Digit 16 Hinged Service Access Filters 0 Standard Panels Standard Filters 5 Hinged Access Standard Filters 9 B Standard Panels MERV 8 Filters 1 Frostat 21 Digit 24 Smoke Detector 10 Without Smoke Detector Return Air Smoke Detector Supply Air Smoke Detector Return Supply Air Smoke Detector Plenum Smoke Detector gt Model Number Description Digit 25 System Monitoring Controls No Monitoring Controls Clogged Filter Switch Fan Failure Switch Discharge Air Sensing Clogged Filter Switch and Fan Failure switch Clogged Filter Switch and Discharge Air Sensing Fan Failure Switch and Discharge Air Sensing Clogged Filter Switch Fan Failure Switch and Discharge Air Sensing NOVAR Return Air Sensor Novar 2024 13 19 NOVAR Zone Temp Sensor Novar 3051 19 Condensate Drain Pan Overflow Switch Clogged Filter Switch and Condensate Drain Pan Overflow Switch Fan Failure Switch and Condensate D
89. practices A Indicates a situation that could resultin NOTICE equipment or property damage only Important Environmental Concerns Scientific research has shown that certain man made chemicals can affect the earth s naturally occurring stratospheric ozone layer when released to the atmosphere In particular several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine Fluorine and Carbon CFCs and those containing Hydrogen Chlorine Fluorine and Carbon HCFCs Not all refrigerants containing these compounds have the same potential impact to the environment Trane advocates the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs Responsible Refrigerant Practices Trane believes that responsible refrigerant practices are important to the environment our customers and the air conditioning industry All technicians who handle refrigerants must be certified The Federal Clean Air Act Section 608 sets forth the requirements for handling reclaiming recovering and recycling of certain refrigerants and the equipment that is used in these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants Know the applicable laws and follow them 2015 Trane All rights reserved AWARNING Personal Protective Equipment PPE Req
90. presentative before installing or repairing a damaged unit Precautionary Measures AWARNING Fiberglass Wool Product contains fiberglass wool Disturbing the insulation in this product during installation maintenance or repair will expose you to airborne particles of glass wool fibers and ceramic fibers known to the state of California to cause cancer through inhalation You MUST wear all necessary Personal Protective Equipment PPE including gloves eye protection a NIOSH approved dust mist respirator long sleeves and pants when working with products containing fiberglass wool Exposition to glass wool fibers without all necessary PPE equipment could result in cancer respiratory skin or eye irritation which could result in death or serious injury e Avoid breathing fiberglass dust e Use a NIOSH approved dust mist respirator e Avoid contact with the skin or eyes Wear long sleeved loose fitting clothing gloves and eye protection e Wash clothes separately from other clothing rinse washer thoroughly e Operations such as sawing blowing tear out and spraying may generate fiber concentrations requiring additional respiratory protection Use the appropriate NIOSH approved respiration in these situations RT SVX26L EN General Information First Aid Measures e Eye Contact Flush eyes with water to remove dust If symptoms persist seek medical attention e Skin Contact Wash affected areas gently w
91. r oil RT SVX26L EN temperature during the Off cycle to reduce oil foaming during compressor starts Oil foaming occurs when refrigerant condenses in the compressor and mixes with the oil In lower ambient conditions refrigerant migration to the compressor could increase When the compressor starts the sudden reduction in crankcase pressure causes the liquid refrigerant to boil rapidly causing the oil to foam This condition could damage compressor bearings due to reduced lubrication and could cause compressor mechanical failures Before starting the unit in the Cooling mode set the system switch to the Off position and turn the main power disconnect to the On position and allow the crankcase heater to operate a minimum of 8 hours Before closing the main power disconnect switch insure that the System selection switch is in the Off position and the Fan selection switch is in the Auto position Close the main power disconnect switch and the unit mounted disconnect switch if applicable ReliaTel Controls Upon power initialization the RTRM performs self diagnostic checks to insure that all internal controls are functional It also checks the configuration parameters against the components connected to the system The Liteport LED located on the RTRM module is turned On within one second of power up if internal operation is okay Use one ofthe following Test procedure to bypass some time delays and to
92. rain Pan Overflow Switch Discharge Air Sensing and Condensate Drain Pan Overflow Switch Clogged Filter Switch Fan Failure Switch and Condensate Drain Pan Overflow Switch Clogged Filter Switch Discharge Air Sensing Tube and Condensate Drain Pan Overflow Switch Fan Failure Switch Discharge Air Sensing Tube and Condensate Drain Pan Overflow Switch Clogged Filter Switch Fan Failure Switch Discharge Air Sensing and Condensate Drain Pan Overflow Switch AONO oH Hog gg Digit 26 System Monitoring Controls 0 No Monitoring Controls A Demand Control Ventilation CO2 20 B FDD Fault Detection and Diagnostics C FDD Fault Detection Diagnostics amp Demand Control Ventilation CO2 20 Digit 27 Unit Hardware Enhancements 0 No Enhancements 1 Digit 28 Short Circuit Current Rating 0 Standard SCCR A 65 SCCR Option 23 24 Digit 31 Advanced Unit Controls 0 Standard Unit Controls 1 Human 26 Stainless Steel Drain Pan 6 Note Most Factory Installed Options available for Downflow Air Discharge units only Please verify with ordering system for availability Model Number Notes 1 2 3 4 10 11 12 Some field set up required Requires ReliaTel Options Module Requires Economizer 2274 digit model numbers for reheat coil B require additional factory installed options Frostat and 2 pleated filters Must be ordered with Thro
93. rce value listed in Table 17 p 41 Ifthe force reading is outside the range readjust the belt tension Note Actual belt deflection force must not exceed the maximum force value shown in Table 17 p 41 7 Recheck the belt tension at least twice during the first 2 to 3 days of operation Belt tension may decrease until the new belts are run in Figure 33 Belt tension gauge Deflection Belt Span in 64 Deflection Belt Span mm B 152 Force Scale Small O Ring Belt Span Large Span Scale O Ring Table 17 Belt tension measurement and deflection ranges Deflection Force Ib Belts Small Super Steel Cable Gripbelts Gripnotch Gripbelts Cross P D 5 2 Section Range in Min Max Min Max Min Max 3 0 3 6 3 4 1 2 3 7 8 51 2 31 4 4 A 3 8 4 8 3 1 2 5 4 1 2 61 4 33 4 4 3 4 5 0 7 0 4 5 1 2 5 67 8 4 1 4 5 1 4 3 4 4 2 4 51 2 53 4 8 41 2 51 2 B 4 4 5 6 5 1 8 7 1 8 61 2 91 8 53 4 7 1 4 5 8 8 8 63 8 83 4 7 3 8 10 1 8 7 8 3 4 Deflection Force kg Super Steel Cable Belts Small P D Gripbelts Gripnotch Gripbelts Cross Range mm mm mm Section mm Min Min Max Min Max 13 3 16 0 13 3 20 0 17 2 24 5 14 5 17 8 A 16 9 21 4 15 6 22 2 20 0 27 8 16 7 21 1 22 0 31 1 17 8 24
94. reverse rotation It has an operating input voltage range of 190 600 Vac and LED indicators for ON and FAULT There are no field adjustments and the module will automatically reset from a fault condition Low Pressure Control ReliaTel Control When the LPC is opened for 1 continuous second the compressor for that circuit is turned off immediately The compressor will not be allowed to restart for a minimum of 3 minutes If four consecutive open conditions occur during the first three minutes of operation the compressor will be locked out a diagnostic communicated to ICS if applicable and a manual reset will be required to restart the compressor Discharge Line Thermostat ReliaTel Control The high pressure controls and discharge line thermostats are wired in series between the compressor outputs on the RTRM and the compressor contactor coils If the high pressure control switch or discharge line thermostat open the RTRM senses a lack of current while calling for cooling and locks the compressor out This is an auto reset lockout If the circuit is open three consecutive times when the contactor coil should be on the RTRM sets a manual lockout for that compressor Power Exhaust Control Optional The power exhaust fan is started whenever the position of the economizer dampers meets or exceed the power exhaust setpoint when the indoor fan is on The setpoint panel is located in the return air section and is factory set at 25
95. rovided with the literature package for this unit Condensate Overflow Switch During maintenance the switch float black ring must be checked to ensure free movement up and down Cooling Season e Check the unit s drain pans and condensate piping to ensure that there are no blockages e Inspect the evaporator and condenser coils for dirt bent fins etc If the coils appear dirty clean them according to the instructions described in Condenser Coil Cleaning p 42 e Manually rotate the condenser fan s to ensure free movement and check motor bearings for wear Verify that all of the fan mounting hardware is tight e Inspect the F A R A damper hinges and pins to ensure that all moving parts are securely mounted Keep the blades clean as necessary e Verify that all damper linkages move freely lubricate with white grease if necessary 42 e Check supply fan motor bearings repair or replace the motor as necessary e Check the fan shaft bearings for wear Replace the bearings as necessary e Check the supply fan belt If the belt is frayed or worn replace it Refer to Fan Belt Adjustment Belt Drive Units p 41 for belt replacement and adjustments e Verify that all wire terminal connections are tight e Remove any corrosion present the exterior surfaces of the unit and repaint these areas e Generally inspect the unit for unusual conditions e g loose access panels leaking piping connections
96. rse direction as compared with the forward direction If high resistance in both directions LED is open If low in both directions LED is shorted Method 3 To test LEDs with ZSM connected to unit test voltages at LED terminals on ZSM A measurement of 32 Vdc across an unlit LED means the LED has failed Table 20 Default operation for mechanical ZSM CV only If no input connection this J6 Input Connection happens 16 7 8 Heat indication LED will not come on while heating LED will not flash during heat fail J6 8 8 Cool indication LED will not come on while cooling LED will not flash during cool failla 9 a indicati 16 9 LED will not come on while unit has power sys on 16 10 8 Service LED will not come on when CFS or FFS indication trips a these connections are only on certain model ZSMs Note Measurements should be made from LED common ZSM terminal 6 to respective LED terminal Refer to Table 20 p 47 Table 21 System mode and fan selection Resistance Zone Sensor Valves Unit Fan Local Unit Local Fan K Ohms Mode Mode Mode 2 32 Off Auto Off Auto 4 87 Cool Auto Cool Auto 7 68 Auto Auto Auto Auto 10 77 Off On Off On 13 32 Cool On Cool On 16 13 Auto On Auto On 19 48 Heat Auto Heat Auto 27 93 Heat On Heat On RT SVX26L EN Troubleshooting Table 21 System mode and fan selection
97. sed in the return air stream This function is performed by sampling the airflow entering the unit at the return air opening Observe the following instructions to assure the airflow through the unit is sufficient for adequate sampling Failure to follow these instructions will preventthe smoke detector from performing its design function 33 Factory Mounted Unit Options In order for the return air smoke detector to properly sense smoke inthe return air stream the air velocity entering the unit must be between 500 and 4000 feet per minute Most models of equipment covered by this instruction will develop an airflow velocity that falls within these limits over the entire airflow range specified in the evaporator fan performance tables Certain models however if operated at low airflow will not develop an air velocity that falls within the required 500 to 4000 feet per minute range For these models the design airflow shall be greater than or equal to the minimum specified in Table 10 Table 10 Minimum allowable airflow Minimum Allowable Airflow with Return Air Smoke Detector 5300 CFM Unit Model Number YSD180 YHD180 Notes Airflow through the unit is affected by the amount of dirt and debris accumulated on the indoor coil and filters To insure that airflow through the unit is adequate for proper sampling by the return air smoke detector complete adherence to the maintenance procedures including recomm
98. stalled and ready for operation AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Note Capacity of Pipe of Different Diameters and Lengths in Cu Ft Per Hr with Pressure Drop of 0 3 and Specific Gravity of 0 60 Table 9 Specific gravity multipliers Specific Gravity Multipliers 0 50 1 10 0 55 1 04 0 60 1 00 0 65 0 96 Figure 19 Schematic diagram for field gas piping to units 1 8 NPT Test Plug Field supplied Ground 6 MIN Union 2 Us ir Yd n To Gas Train Gag Supply Line F Unit Access Hole das shutoff Field lied outside unit Figld upp re b Drip Leg RT SVX26L EN e Check all electrical connections for tightness and point of termination accuracy e Verify that the condenser airflow will be unobstructed e Verify that the condenser fan and indoor blower turn freely without rubbing and are properly tightened on the shafts e Check the supply fan belts for proper tension and the fan bearings for sufficient lubrication If the belts require adjustment or ifthe bearings need lubricating refer to the maintenance section of this manual for instructions e Verify that a condensate trap is installe
99. start the unit at the control panel Each step of unitoperation can be activated individually by temporarily shorting across the Test terminals for two to three seconds The Liteport LED located on the RTRM module will blink when the test mode has been initiated The unit can be left in any Test step for up to one hour before it will automatically terminate or it can be terminated by opening the main power disconnect switch Once the test mode has been terminated the Liteport LED will glow continuously and the unit will revert to the System control Three Stage Cooling T YH 150 180 210 and 240 models have the ability to utilize three stages of cooling when the unit is controlled by a zone sensor To enable three stages of cooling connect wires 36BY and 36BZ Important This is only intended for HIGH EFFICIENCY SHORT ORIFICE UNITS Disconnecting these wires will disable three stage cooling 4 Stages of Cooling 25 Tons 25 tons high efficiency units have 4 stages of cooling with a single compressor and tandem set similar to variable speed RT SVX26L EN Installation Modulating Gas Heat 5 1 Turndown Optional The set up required for equipment ordered with modulating gas heat varies based on the control system utilized Zone sensors LonTalk and Comm3 4 do not require additional set up 24 volt control systems thermostats require setting the desired leaving air temperature The heat exchanger will mo
100. t Dehumidification Multi speed Control 208 575 3 Fans Single 1213 1010 YH 150 300 Modulating Gas Heat with or without Dehumidification Zone Variable Air Volume 2313 1495 YS 150 300 with or without Dehumidification Option Modules 1213 1015 YH 150 300 with or without Dehumidification Option Modules 2313 1520 YS 150 300 2 Stage Gas Heat with or without Dehumidification Raceway 1213 1039 YH 150 300 2 Stage Gas Heat with without Dehumidification Connection 2313 1521 YS 150 300 Modulating Gas Heat with or without Dehumidification 1213 1040 YH 150 300 Modulating Gas Heat with or without Dehumidification RT SVX26L EN 49 Wiring Diagrams Table 22 Wiring diagrams Type of Schematic Diagram Airflow Type Voltage Number Description 505598 2313 1511 5 150 300 50 60HZ 2 Stage Gas Heat with without Dehumidification 2313 1509 YS 150 300 50 60HZ Modulating Gas Heat with or without Dehumidification 2313 1510 YS 150 300 50 60HZ 2 Stage Gas Heat with or without Dehumidification Maria bie Air Control Box 2313 1512 YS 150 300 50 60HZ Modulating Gas Heat with or without Dehumidification Volume Multi speed Connections 1213 1252 150 240 2 Stage Gas Heat with or without Dehumidification Fans Single 1213 1253 YH 150 240 Modulating Gas Heat with or without Dehumidification Zone Variable 200 575 Air Volume 121
101. ter the fan is turned On if the Fan Proving Switch is not made Clogged Filter Switch This LED will remain lit the entire time that the Normally Open switch is closed The LED will be turned off immediately after resetting the switch to the Normally Open position or any time that the IDM is turned Off If the switch remains closed and the IDM is turned the SERVICE LED will be turned On again after the 2 x1 minute ignore delay This LED being turned will have no other affect on unit operation It is an indicator only Fan Failure Switch When the Fan Failure switch is wired to the RTOM the LED will remain flashing the entire time the fan proving switch is closed indicating a fan failure and it will shut the unit operations down Condensate Overflow Switch When the condensate overflow switch is closed a drain pan overflow condition is indicated and it will shut unit operations down 46 Zone Temperature Sensor ZTS Test Note These procedures are not for programmable or digital models and are conducted with the Zone Sensor Module electrically removed from the system Test 1 Zone Temperature Thermistor ZTEMP This component is tested by measuring the resistance between terminals 1 and 2 on the Zone Temperature Sensor Below are some typical indoor temperatures and corresponding resistive values Table 19 Temps and resistance values
102. the main power disconnect switch to the Off position or proceed to the next component start up procedure Remove electro mechanical test mode connections if applicable Compressor Start Up 1 Attach a set of service gauges onto the suction and discharge gauge ports for each circuit Refer to the refrigerant circuit illustration in the Service Facts Using the Service Test Guide in Table 12 p 36 continue the Service Test start up procedure for each compressor circuit Momentarily jump across the Test 1 and Test 2 terminals on LTB1 one additional time if continuing from previous component start up or until the desired startup component Test is started Scroll Compressors a Once each compressor has started verify that the rotation is correct If wired correctly the suction pressure should drop and the discharge pressure should rise If a scroll compressor is rotating backwards it will not pump and a loud rattling sound can be observed b If the electrical phasing is correct before condemning a compressor interchange any two leads at the compressor Terminal block to check the internal phasing Refer to the following RT SVX26L EN illustration for the compressor terminal phase identification Do not allow the compressor to operate backwards for more than 5 seconds Operation for a period of time longer than this will result in compressor damage Copeland Alliance will experience failure also If the compressor runs
103. tmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury For additional information regarding the safe discharge of capacitors see PROD SVBO6A EN NIN UNO Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury 1 Remove the smoke detector assembly from its shipping position inthe indoor fan compartment This assembly is attached with three screws to the indoor fan board near the top of the unit iS Remove and discard the shipping bracket from the smoke detector assembly This is the angled piece of sheet metal that secured the smoke detector assembly to the interior parts of the unit during shipment Place the end of the smoke detector 16 inch metal exhaust tube provided into the bottom hole in the back of the smoke detector Line up the tab in the exhaust tube with one ofthe slots in the detector and insert the tube until the tube can be rotated Rotate the tube 45 degrees to lock it in place e Figure 24 Brackets Smoke Detector Mounting Bracket Shipping Bracket
104. ugh the Base Electrical option or Horizontal Side Access and either Unit Mounted Disconnect or Circuit Breaker Available factory installed on downflow AND horizontal units Verify with ordering system Cannot be fused Must be factory installed when using Through the Base Options ReliaTel Options Module is required when ordering the following accessories Clogged Filter Switch Fan Fail Switch Condensate Overflow Switch Discharge Air Sensing Kit Frostat Ventilation Override Smoke Detector Dehumidification and Modulating Gas Heat Furnace Option cannot be ordered in conjunction with field installed economizer on downflow units Must be factory installed The return air smoke detector may not fit up or work properly on the Voyager units when used in conjunction with 3 d party accessories such as bolt on heat wheels economizers and power exhaust Do not order the return air smoke detectors when using this type of accessory Unit mounted disconnect and circuit breakers are mutually exclusive of each other Through the base electrical option or Horizontal Side Access must be ordered with either unit mounted disconnect or circuit breaker 13 This option consists of the Novar return air sensor Novar WTS 10 that is wired and shipped in the return air section of the unit The sensor ships with approximately 15 of extra wire for dropping down the return air duct downflow only 14 Available on high
105. uired Installing servicing this unit could result in exposure to electrical mechanical and chemical hazards e Before installing servicing this unit technicians MUST put on all PPE required for the work being undertaken Examples cut resistant gloves sleeves butyl gloves safety glasses hard hat bump cap fall protection electrical PPE and arc flash clothing ALWAYS refer to appropriate Material Safety Data Sheets MSDS Safety Data Sheets SDS and OSHA guidelines for proper PPE e When working with or around hazardous chemicals ALWAYS refer to the appropriate MSDS SDS and OSHA GHS Global Harmonized System of Classification and Labelling of Chemicals guidelines for information on allowable personal exposure levels proper respiratory protection and handling instructions e If there is a risk of energized electrical contact arc or flash technicians MUST put on all PPE in accordance with OSHA NFPA 70E or other country specific requirements for arc flash protection PRIOR to servicing the unit NEVER PERFORM ANY SWITCHING DISCONNECTING OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND ARC FLASH CLOTHING ENSURE ELECTRICAL METERS AND EQUIPMENT ARE PROPERLY RATED FOR INTENDED VOLTAGE Failure to follow instructions could result in death or serious injury AWARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field
106. ure should be weather proofed after installation is completed Note For sound consideration cut only the holes in the roof deck for the ductwork penetrations Do not cut out the entire roof deck within the curb perimeter If a Curb Accessory Kit is not used a The ductwork can be attached directly to the factory provided flanges around the unit s supply and return air openings Be sure to use flexible duct connections at the unit b For built up curbs supplied by others gaskets must be installed around the curb perimeter flange and the supply and return air opening flanges General Unit Requirements A WARNING Proper Field Wiring and Grounding Required field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury The checklist listed below is a summary of the steps required to successfully install a commercial unit This checklist is intended to acquaint the installing personnel with whatis required inthe installation process It does not replace the detailed instructions called out in the applicable sections of this manual e Check the unit for shipping damage and material shortage file a freight claim an

Trane Voyager 12.5 to 25 Tons Installation and Maintenance Manual

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