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Trane Odyssey 6 to 25 Tons Installation and Maintenance Manual

1. 200 55 60 65 70 75 80 85 90 95 100 105 110 115 Liquid Temperature Leaving OD Coil F 120 125 130 135 140 Figure 35 TWA201E Heating both compressors running 500 TWA201E Charging Curves Heating Mode Each Circuit 475 450 Remove 75 F Return Aii 425 400 charge 65 F Return 375 55 F Return Ai 350 325 300 275 250 Discharge Pressure psig 225 Add charge 200 175 150 15 20 25 30 35 4 45 50 55 Ambient Temperature F 60 65 70 75 80 SSP SVX14C EN Figure 36 TWA240E Cooling TWA240E Charging Curve Cooling Mode Each Circuit both compressors running 650 625 600 575 550 525 500 Remove charge Add charge 350 325 300 275 250 225 200 Discharge Pressure psig CE S 85255 asada 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Liquid Temperature Leaving OD F Table 9 TWA superheat with matched TWE air handler Charging Charts and Superheat Figure 37 TWA240E Heating both compressors running 500 TWA240E Charging Curves Heating Mode Each Circuit 475 450 75 F Return Ai 425 Remove charge 65 F Return Air 400 55 F Return Ai
2. 0 25 50 75 100 125 150 total line length horizontal vertical ft Figure9 Allowable elevation difference TTA below indoor unit 660 o Am APTS 20 Es Acceptable liquid riser height __ Hl based on total liquid line length _ CEEC Seales 0 25 50 75 100 125 150 elevation difference ft total line length horizontal vertical ft Note Route refrigerant piping for minimum linear length minimum number of bends and fittings no reducers and minimum amount of line exposed to outdoor ambients SSP SVX14C EN Installation Refrigerant Piping Procedures Outdoor Units A WARNING R 410A Refrigerant under Higher Pressure than R 22 Failure to use proper equipment or components as described below could result in equipment failing and possibly exploding which could result in death serious injury or equipment damage The units described in this manual use R 410A refrigerant which operates at higher pressures than R 22 Use ONLY R 410A rated service equipment or components with these units For specific handling concerns with R 410A please contact your local Trane representative Each TTA unit ships with a holding charge of dry nitrogen The nitrogen should be removed and the entire system evacuated at the proper time to avoid possible contamination 1 Remove the compressor service access panel 2 Locate the liquid and suctio
3. Use Copper Conductors Only Failure to use copper conductors could result in equipment damage as unit terminals are not designed to accept other types of conductors Low Voltage Wiring Mount the indoor thermostat zone sensor or Night Setback Panel NSB in accordance with the corresponding thermostat installation instructions Install color coded weather proof multi wire cable according to the field wiring schematics see Field Wiring p 21 ReliaTel Controls Wiring shown with dashed lines is to be furnished and installed by the customer All customer supplied wiring must be copper only and must conform to NEC and local electrical codes Codes may require line of sight between disconnect switch and unit Notes 1 When electric heater accessory is used single point power entry or dual point power entry is field optional Single point power entry option is through electric heater only 2 Choose only one ofthe following Thermostat Zone Sensor or NSB Panel Figure 12 ReliaTel jobsite connections Disconnect Switch By Others ap Note 2 4 M Electric Heat Accessory B i 77 pisconnect Switch By Others T stat Zone NSB Panel Sensor 3 power wires line voltage for 3 phase 2 power wires for single phase 3 power wires line voltage for 3 phase 2 power wires for single phase Heat Pump thermostat 5 to 8 wires depending on stages of electric heat to 7 wires d
4. HAIL GUARD OPTIONAL SEE NOTE 3 SERVICE CLEARANCE 48 1219 2 SEE NOTE 1 FOR CLEARANCE DETAIL A SERVICE PANEL 95 7 16 2424 112 WITH HAIL GUARD HAIL GUARD OPTIONAL 45 1 8 1146 2 EE ERVICE Ls 3 8 M 1051 93 5 16 2370 1 7 16 11 1 DIA ISOLATOR MOUNTING HOLES OUTSIDE HOLES 4 PLACES SERVICE PANEL SIDE y BOTTOM OF UNIT 36 7 8 936 6 411 2 1054 1 3 76 2 2 3 16 6 13 16 87 55 6 473 2210 93 2362 2 SSP SVX14C EN NOTES 1 MINIMUM CLEARANCE FOR PROPER OPERATION IS 36 914 4 FROM WALLS SHRUBBERY PRIVACY FENCES ETC MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72 1829 RECOMMENDED SERVICE CLEARANCE 48 1219 2 TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100 2540 MINIMUM UNIT SHOULD BE PLACED SO ROOF RUN OFF WATER DOES NOT POUR DIRECTLY ON UNIT OUTDOOR AIR TEMPERATURE SENSOR OPENING DO NOT BLOCK OPENING 46 1168 4 WITH HAIL GUARD 44 3 16 1122 4 HAIL GUARD OPTIONAL rr ume a zen ege Sees zeen mo own voee 7 1 16 1 1 6 9 228 6 25 11 16 652 5 Sg 228 6 I 9 1 4 235 6 13 16 173 CONTROL WIRING 1 3 16 30 2 LINE VOLTAGE n CC REFRIGERANT ACCESS 41 5 8 39 7 8 1057 3 NN 1012 8 i D T 14 1 2 14 5 8
5. a 65 F Retum Air e S 55 F Retum Air Discharge Pressure psig N N a S 250 Add charge 225 200 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Ambient Temperature F 70 75 80 Figure 26 TWA101D Cooling TWA101D Charging Curve Cooling Mode 650 625 600 575 550 525 Remove 500 charge 475 450 425 400 375 Add Discharge Pressure psig 350 charge 325 300 275 250 225 200 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 Liquid Temperature Leaving OD Coil F 130 135 140 SSP SVX14C EN Figure 27 TWA101D Heating TWA101D Charging Curve Heating Mode 400 75 F Retum Air 375 Remove charge 350 65 F Retum Air 325 55 F Retum Air 300 275 250 Discharge Pressure psig 225 200 Add 175 150 o a a a 30 35 40 45 50 55 60 65 70 75 80 Ambient Temperature F Figure 28 TWA120D Cooling TWA120D Charging Curve Cooling Mode 650 625 600 575 550 525 500 475 450 425 400 375 350 325 300 275 250 225 200 Remove charge Add charge Discharge Pressure psig
6. control method For unit test steps test modes and step resistance values to cycle the various components refer to Table 14 p 37 37 Troubleshooting Troubleshooting ReliaTel Controls A WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is 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 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 amp 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 Note The J6 amp J7 screw terminals must be tightened in order to accurately measure voltage in the required steps 1 Verify that the system 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 present
7. 20 Low Voltage Wiring 20 ReliaTel Controls 20 Field Wiring 21 Refrigerant Circuit 22 Electrical Data 24 Charging Charts and Superheat 26 Installation Checklist 30 Refrigerant Piping 30 Electrical Wiring 30 PresSLtarty usu ce uio eoo EDO DU 31 Control Circuit Features 31 Discharge Temperature Limit DET Z S a 31 Evaporator Defrost Control EDC 4i et uapa yanasan aus s 31 Low Pressure Cut Out LPCO 31 High Pressure Cut Out HPCO 31 Internal Overload Protector T c 31 Star ku teu o daa 32 ReliaTel Controls 32 32 Functions and Features 32 Service Test Modes for ReliaTel Controls ce tee ae e eod tre dines 37 Test Modes liil ma Ree 37 Step Test Mode 37 Resistance Test Mode 37 Auto TestMode 37 Troubleshooting 38 Troubleshooting ReliaTel Controls 38 System Status Checkout Procedure 38 Method e 38 Method2 39 Resetting Cooling and Heating LOCKOUTS s RU ete wei A 39 Method 39 Method 2 2206 1 ee ver See eer 39 Zone
8. 375 350 325 300 275 4 Discharge Pressure psig 250 225 Add 200 charge 175 150 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Ambient Temperature F Cooling Superheat Heating Superheat Condenser Air Handler Circuit 1 Circuit 2 Circuit 1 Circuit 2 TWA061D TWE076D 14 9 12 7 TWA073D TWEO90D 14 9 12 7 TWA076D TWE076D 16 0 15 7 TWA090D TWEO90D 16 0 15 7 TWA101D TWE101D 16 3 13 1 TWA120D TWE120D 16 3 13 1 TWA156E TWE156E 15 5 15 5 12 2 12 2 TWA180E TWE180E 15 5 15 5 12 2 12 2 TWA201E TWE201E 14 7 14 7 11 4 11 4 TWA240E TWE240E 14 7 14 7 11 4 11 4 Notes 1 Anadjustable TXV is provided for each circuit in the TWE and TWA models If the application causes the superheat to deviate from the values shown above by more than 1 degree after the system has achieved steady state the TXV should be adjusted to provide the values shown as measured at the compressor 2 values given above have been tested and are approved for the matched sets shown If an alternate combination is used an expansion device should be used that provides 16 20 F degrees of superheat measured at the compressor 3 Check and adjust superheat using this table then compare with charging chart to determine if charge corrections are necessary SSP SVX14C EN 29 Installation Checklist
9. Installation Operation and Maintenance Split System Air Conditioners Odyssey Heat Pump Condenser 6 to 20 Tons 60 Hz 50 Hz TWAO073D A TWAO061D A TWAO090D A TWAO076D A TWA120D A TWA101D A TWA180E A TWA156E A TWA240E A TWA201E A SAFETY 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 2014 SSP SVX14C EN GID ingerson rana 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 ofthese precautions The three types of advisories are defined as follows Indicates a potentially hazardous situation WARNING which if not avoided could result in death or serious injury Indicates a potentially hazardous situation ACAUTION which if not avoided could result in minor or moderate injury It could also be u
10. Measure the voltage between terminals J6 9 amp J6 6 e Normal Operation approximately 32 VDC System Failure less than 1 VDC approximately 0 75 VDC e Test Mode voltage alternates between 32 VDC amp 0 75 VDC Heat Failure Measure the voltage between terminals J6 7 amp J6 6 SSP SVX14C EN Troubleshooting 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 amp 0 75 VDC Cool Failure Measure the voltage between terminals J6 8 amp J6 6 Cool Operating approximately 32 VDC Cool Off less than 1 VDC approximately 0 75 VDC e Cooling Failure voltage alternates between 32 VDC amp 0 75 VDC To use LED s for quick status information at the unit purchase a BAYSENS010B ZSM and connect wires with alligator clamps to terminals 6 through 10 Connected 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 119A or BAYSENS023A the LED indicators will not function while the BAYSENSO010A is connected Resetting Cooling and Heating Lockouts Cooling Failures and Heating Lockouts are reset in an identical manner Method 1 p 39 explains resetting the system from the space Method 2 p 39 explains resetting the system at the unit Note Before resetting Cooling Failures and
11. indoor temperatures and corresponding resistive values Table 15 Typical indoor temperatures and values Zone Temperature Nominal Resistance 50 F or 10 0 C 19 9 Kohms 55 F or 12 8 C 17 47 Kohms 60 F or 15 6 C 15 3 Kohms Table 16 Test 3 system mode and fan selection Table 15 Typical indoor temperatures and values continued Zone Temperature Nominal Resistance 65 F or 18 3 C 13 49 Kohms 70 F or 21 1 C 11 9 Kohms 75 F or 23 9 C 10 50 Kohms 80 F or 26 7 C 9 3 Kohms 85 F or 29 4 C 8 25 Kohms 90 F or 32 2 C 7 3 Kohms Test 2 Cooling Set Point CSP and Heating Set Point HSP 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 in Table 16 p 40 with their corresponding resistance values Zone Sensor Unit Fan Resistance Valves Ohms Mode Local Unit Mode Local Fan Mode 2 32K Off Auto Off Auto 4 87K Cool Auto Cool Auto 7 68K Auto Auto Auto Auto 10 77K Off On Off On 13 32K Cool On Cool On 16 13K Auto On Auto On 19 48K Heat Auto Heat Auto 27 93K Heat On Heat On 35 0K Emergency Heat Auto E
12. 12 5 8 368 3 371 5 320 7 lt i Mur iL SS e LIQUID LINES 55 8 4 4 4 1 15 16 23 8 143 108 SUCTION LINES r3 11 16 94 6 5 16 160 3 FRONT DETAIL A DIMENSIONAL DETAIL 13 Weights Heat Pump Condenser Table 1 TWA unit and corner weights Ibs 60 Hz Corner Weights Tons Model No Ma 1 gt 5 6 TWA073D 382 328 113 83 56 76 7 5 TWA090D 394 340 117 86 58 79 10 TWA120D 509 438 127 121 72 118 15 TWA180E 898 765 202 192 181 190 20 TWA240E 981 848 254 266 147 181 Table2 TWA unit and corner weights Ibs 50 Hz Shipping Net Max Corner Weights Tons Model No Max Ibs Ibs i u 4 5 TWA061D 172 148 51 37 25 34 6 25 TWA076D 177 153 53 39 26 36 8 33 TWA101D 229 197 57 54 32 53 13 TWA156E 404 344 91 86 81 86 16 7 TWA201E 441 382 114 120 66 81 Figure6 TWA073 090 120 TWA061 076 101 Figure 7 TWA180 240 TWA156 201 LIFTING HOLES BOTH SIDES LIFTING HOLES BOTH SIDES 14 SSP SVX14C EN Installation Refrigerant Piping Guidelines Figure8 Allowable elevation difference Cooling only TTA above indoor unit 60 Acceptable suction riser height 40 based on total suction line length TTA above indoor unit elevation difference ft E
13. 200 175 Add M charge 125 100 0 5 10 15 20 25 30 3 40 45 50 55 60 65 70 75 Ambient Temperature F TWA180E Cooling 80 650 TWA180E Charging Curve Cooling Mode Each Circuit both compressors running 625 600 575 550 525 Remove 500 charge 475 450 425 400 375 Add Discharge Pressure psig 350 charge 325 300 275 250 225 200 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 Liquid Temperature Leaving OD Coil F 140 28 Figure 33 TWA180E Heating both compressors running TWA180E Charging Curve Heating Mode Each Circuit 500 475 450 Remove charge 425 75 F Retum Air 400 375 65 F Retum Air 350 325 55 F Retum Air 300 275 250 Discharge Pressure psig 225 200 175 150 125 100 15 20 25 30 35 40 45 50 55 Ambient Temperature F Figure 34 TWA201E Cooling 60 65 70 75 80 both compressors running TWA201E Charging Curve Cooling Mode Each Circuit 650 625 600 575 550 525 Remove 500 475 charge 450 425 400 375 350 Add Discharge Pressure psig 325 charge 300 275 250 225
14. 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Liquid Temperature Leaving OD Coil F Figure 29 TWA120D Heating TWA120D Charging Curve Heating Mode 450 425 400 Remove 75 F Retum Air charge 375 65 F Retum Air 350 325 55 F Return Air 300 275 250 225 200 1 Add charge Discharge Pressure psig 175 150 125 100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Ambient Temperature F 27 Charging Charts and Superheat Figure 30 TWA156E Cooling TWA156E Charging Curve Cooling Mode Each Circuit both compressors running 650 625 600 575 550 525 Remove 500 charge 475 450 425 400 375 350 Discharge Pressure psig 325 300 275 250 225 200 55 60 65 70 75 80 85 90 95 100 105 110 115 120 425 130 135 Liquid Temperature Leaving OD Coil F 140 Figure 31 TWA156E Heating both compressors running TWA156E Charging Curve Heating Mode Each Circuit 500 475 450 Remove charge 425 75 F Retum Air 400 375 65 F Retum Air 350 55 F Relum Air 325 300 275 250 225 Discharge Pressure psig Figure 32
15. Auxiliary Switchover Switchover Mode Stage IndoorFan Compressor Heat 1 Heat 2 Valve 1 Valve 2 a Heat Off Off Off Off Off Off Off Off Heat Stage 1 On Compressor 1 Off Off Off Off Both Heat Stages en Compressors off Off Off Off ET Both Heat Auxiliary 1 On Compressors On off off off SR Both Heat Auxiliary 2 On Compressors On On Off Off SSP SVX14C EN 35 Start Up Table 13 Heat pump control 2 step mechanical heating continued Active Unit Auxiliary Auxiliary Switchover Switchover Mode Stage IndoorFan Compressor Heat 1 Heat 2 Valve 1 Valve 2 a Emergency Stage 1 On Off On Off Off Off Heat Emergency Stage 2 On Off On On Off Off Heat Both Heat Defrost On Compressors On Off On b On b Cool Don t Care Off Off Off Off On On a Only units configured as an independent circuit heat pump will control the switchover valve 2 output b On units with independent circuits only the circuit whose conditions are correct for defrost will enter defrost mode and energize the switchover valve The other circuit s switchover valve will remain in its previous state until it has a defrost request or until the unit mode changes 36 SSP SVX14C EN Service Test Modes for ReliaTel Controls Test Modes Upon power initialization the RTRM performs self diagnostic checks to ensure that all internal controls are functional It also checks the configuration parameters against the components co
16. Complete this checklist once the unit is installed to Insulated portions of liquid line exposed to verify that all recommended procedures have been extremes in temperature accomplished before starting the system Do not Performed initial leak test operate the system until all items covered by this checklist are complete Inspect unit location for proper required service Evacuated each refrigerant circuit to 500 microns Charged each circuit with proper amount of R clearances 410A Inspect unit location for proper free air clearances Mode Electrical Wiring Inspect unit location for secure level mounting position Provided unit power wiring with disconnect to properterminals in the unit control section Refrigerant Piping O Installed system indoor thermostat Installed system low voltage interconnecting wiring to proper terminals of outdoor unit indoor unit and system thermostat Properly sized constructed liquid and suction lines connected to stubs at both the indoor and outdoor units Insulated the entire suction line 30 SSP SVX14C EN Pre Start Control Circuit Features Note Notall of these features may be required for your unit check electrical schematic Discharge Temperature Limit DTL The control s sensor is located on the discharge line This device will shut off the compressor and the outdoor fan s if
17. TWA120DW 518 632 17 4 25 TWA180E3 187 253 66 3 80 TWA180E4 414 506 33 4 40 T TWA180EK 342 418 39 0 45 TWA180EW 518 632 27 4 30 24 SSP SVX14C EN Table 6 Unit wiring heat pumps 60 Hz continued Tons Unit Model Number Unit Operating Minimum Circuit M a i i 9 9 Voltage Range Ampacity Breaker Size TWA240E3 187 253 86 1 100 TWA240E4 414 506 45 5 50 ok TWA240EK 342 418 61 8 70 TWA240EW 518 632 34 8 40 Note HACR type circuit breaker per NEC Table 7 Electrical characteristics motors heat pumps 50 Hz Compressor Motor Condenser Fan Motor Unit Model Amps Amps Number No Volts Phase RLA LRA No Volts Phase RLA LRA Ea Ea Ea Ea TWA061DD 1 380 415 3 10 9 74 1 380 415 1 1 6 3 8 TWA076DD 1 380 415 3 12 5 101 1 380 415 1 1 6 3 8 TWA101DD 1 380 415 3 17 2 111 1 380 415 1 1 9 5 8 TWA156ED 2 380 415 3 12 5 100 2 380 415 1 1 9 5 8 TWA201ED 2 380 415 3 18 5 118 2 380 415 1 1 9 5 8 Table8 Unit wiring heat pumps 50 Hz Tons M tt Unit Operating Maximum Circuit Lee sc Maximum Circuit Breaker 5 TWA061DD 380 415 15 2 20 6 25 TWA076DD 380 415 17 3 25 8 33 TWA101DD 380 415 23 4 30 13 TWA156ED 380 415 32 0 40 16 7 TWA201ED 380 415 45 4 60 Note HACR type circuit breaker per NEC SSP SVX14C EN Electrical Data 25 Charging Charts and Superheat Figure 18 TWA061D C
18. 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 Should equipment failure occur contact a qualified service organization with qualified experienced HVAC technicians to properly diagnose and repair this equipment Important All phases of this installation must comply with the NATIONAL STATE amp LOCAL CODES In addition to local codes the installation must conform with National Electric Code ANSI NFPA NO 70 LATEST REVISION Any individual installing maintaining or servicing this equipment must be properly trained licensed and qualified Important Do not remove the VFD without first contacting technical support For performance related questions and diagnostic support in North America call 1 877 872 6363 Any return requires a claim number FIRST Removal of the VFD prior to this step will void the unit s warranties Installation procedures should be performed in the sequence that they appear in this manual Do not destroy or remove the manual from the unit The SSP SVX14C EN manual should remain weather protected with the unit until all installation procedures are complete Note It is not the intention of this manual to cover all possible variations in systems that may occur or to provide comprehensive information concerning every possib
19. may become combustible in the presence of an ignition source leading to an explosion Excessive heat from soldering brazing or welding with refrigerant vapors present can form highly toxic gases and extremely corrosive acids 4 Cut fit and braze tubing starting at the outdoor unit and work toward the indoor unit See recommended tube sizes Table 4 p 18 Note Use long radius ells for all 90 bends All brazing should be done using a 2 to 3 psig dry nitrogen purge flowing through the pipe being brazed see Figure 10 p 16 NOTICE System Component Damage Install a regulating valve between the nitrogen source and the gauge manifold Unregulated pressure can damage system components NOTICE System Component Damage Wet wrap all valves and protect painted surfaces from excessive heat Heat can damage system components and the unit finish 5 Shut off nitrogen supply Shut off the manifold valve for the line that is connected to the suction line service valve Disconnect the line from the gauge port on the valve SSP SVX14C EN Refrigerant Piping Procedures Indoor Unit Once liquid and suction lines are complete to the refrigerant connections on the indoor unit remove the gauge port core s on the indoor unit connection stubs to release the dry nitrogen charge NOTICE Unit Damage Do not apply heatto remove seal caps until the gauge port cores have been removed If seal caps are intac
20. means the LED has failed Important Measurements should be made from LED common ZSM terminal 6 to respective LED terminal Programmable amp Digital Zone Sensor Test Testing Serial Communication Voltage 1 Verify 24 VAC is present between terminals J6 14 amp SSP SVX14C EN Troubleshooting J6 11 A WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is 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 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 Service Test Modes for ReliaTel Controls 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
21. optional automatic changeover thermostat TS The fan switch on the optional automatic changeover thermostat can be placed in either the ON position causing continuous evaporator indoor fan operation or the AUTO position causing fan operation to coincide with heating or cooling run cycles In AUTO position the fan switch automatically changes to Heat or Cool in response to sufficient room temperature change Terminology The following terms and acronyms may be used in this section ASC Anti Short Cycle Timer CC Compressor Contactor CCH Crankcase Heater CF Outdoor Fan Capacitor CHR Crankcase Heater Relay 32 COMM Communication Interface Module CPR Compressor CTS Coil Temperature Sensor DTL Discharge Temperature Limit Switch EDC Evaporator Defrost Control Switch FTB Outdoor Fan Terminal Block HPC High Pressure Cutout Switch HTB High Voltage Terminal Block LPC Low Pressure Cutout Switch LTB Low Voltage Terminal Board OAS Outdoor Air Temperature Sensor ODF Outdoor Fan Relay ODM Outdoor Fan Motor PM Phase Monitor RTRM ReliaTel Refrigeration Module SOV Switchover Valve TNS Transformer Functions and Features These subsections describe the following key heat pump functions and features Processing Activated When the Disconnect Switch is in ON Position Mechanical Heat e Auxiliary Heat Emergency Heat
22. servicing the unit SSP SVX14C EN WARNING Refrigerant under High Pressure Failure to follow instructions below could result in an explosion which could result in death or serious injury or equipment damage System contains oil and refrigerant under high pressure Recover refrigerant to relieve pressure before opening the system See unit nameplate for refrigeranttype Do not use non approved refrigerants refrigerant substitutes or refrigerant additives WARNING R 410A Refrigerant under Higher Pressure than R 22 Failure to use proper equipment or components as described below could result in equipment failing and possibly exploding which could result in death serious injury or equipment damage The units described in this manual use R 410A refrigerant which operates at higher pressures than R 22 Use ONLY R 410A rated service equipment or components with these units For specific handling concerns with R 410A please contact your local Trane representative SSP SVX14C EN Introduction Copyright This document and the information in it are the property of Trane and may not be used or reproduced in whole or in part without the written permission of Trane Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any person of such revision or change Trademarks All trademarks referenced in this document are the
23. 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 Table 14 Test mode states for SZVAV independent circuit heat pump units with auxiliary electric heat 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 unit one at a time when a fixed jumper is installed across the test terminals SSP SVX14C EN TEST STEP MODE N VFD COMMAND COMP 1 COMP 2 HEAT 1 HEAT 2 Vi OHMS 1 FAN ON ON 58 0 2 8 VDC OFF OFF OFF OFF OFF OFF 2 2K 2 COOL 1 ON 86 3 8 7 7 VDC ON OFF OFF OFF ON ON 4 7K 3 COOL 2 ON 100 5 6 10 VDC ON ON OFF OFF ON ON 6 8K 4 HEAT 1 ON 100 5 6 10 VDC ON OFF OFF OFF OFF OFF 10K 5 HEAT 2 ON 100 5 6 10 VDC ON ON OFF OFF OFF OFF 15K 6 Heat 3 ON 100 5 6 10 VDC ON ON ON OFF OFF OFF 22K 7 Heat 4 ON 100 5 6 10 VDC ON ON ON ON OFF OFF 27K 8 Defrost ON 100 5 6 10 VDC ON ON ON OFF ON ON 33K 9 Emergency Heat ON 100 5 6 10 VDC OFF OFF ON ON OFF OFF 47K 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
24. 80E30TAA TWA180E3HRAA TWA180E3HTAA TWA180E30UAA TWA180E30WAA TWA180E3HUAA TWA180E3HWAA TWA180E40RAA TWA180E40TAA TWA180E4HRAA TWA180EA4HTAA TWA180E40UAA TWA180E40WAA TWA180E4HUAA TWA180E4HWAA TWA180EWORAA TWA180EWOTAA TWA180EWHRAA TWA180EWHTAA TWA180EWOUAA TWA180EWOWAA TWA180EWHUAA TWA180EWHWAA TWA180EKORAA TWA180EKOTAA TWA180EKHRAA TWA180EKHTAA TWA180EKOUAA TWA180EKOWAA TWA180EKHUAA TWA180EKHWAA TWA201EDORAA TWA201EDOTAA TWA201EDHRAA TWA201EDHTAA TWA201EDOUAA TWA201bEDOWAA TWA201EDHUAA TWA201EDHWAA TWA240E40RAA TWA240E40TAA TWA240E4HRAA TWA240E4HTAA TWA240E40UAA TWA240E40WAA TWA240E4HUAA TWA240E4HWAA TWA240EWORAA TWA240EWOTAA TWA240EWHRAA TWA240EWHTAA TWA240EWOUAA TWA240EWOWAA TWA240EWHUAA TWA240EWHWAA TWA240EKORAA TWA240EKOTAA TWA240EKHRAA TWA240EKHTAA TWA240EKOUAA TWA240EKOWAA TWA240EKHUAA TWA240EKHWAA TWA240E30RAA TWA240E30TAA TWA240E3HRAA TWA240E3HTAA TWA240E30UAA TWA240E30WAA TWA240E3HUAA TWA240E3HWAA Connection Diagram 2313 0430 SSP SVX14C EN Note Wiring diagrams are available through e Library or by contacting your local sales office 45 Notes 46 SSP SVX14C EN Notes SSP SVX14C EN 47 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 advan
25. Add 325 225 6 200 275 DS 250 225 150 200 0 5 10 15 20 25 3 3 40 45 5 55 60 6 70 75 8 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Ambient Temperature F Liquid Temperature Leaving OD Coil F Figure 20 TWAO73D Cooling Figure 23 TWA076D Heating TWA073D Charging Curve Cooling Mode TWAO076D Charging Curve Heating Mode 650 400 625 75 F Retum Air 600 375 575 Remove 550 350 charge 65 Retum Air a 525 2 9 500 amp 325 475 5 450 g 300 55 F Retum Air 2 425 S ios 400 B 5 37 E 2 250 350 325 Si 225 Add charge 200 4 225 175 200 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 8 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Liquid Temperature Leaving OD Coil F Ambient Temperature F 26 SSP SVX14C EN Charging Charts and Superheat Figure 24 TWA090D Cooling TWAO090D Charging Curve Cooling Mode 625 600 575 550 525 Remove 500 charge 475 450 425 400 375 Add 350 Discharge Pressure psig charge 325 300 275 250 225 200 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 Liquid Temperature Leaving OD Coil F 130 135 140 Figure 25 TWA090D Heating TWAOSOD Charging Curve Heating Mode 400 75 F Retum Air S a Remove charge
26. Cooling e Demand Defrost Processing Activated When the Disconnect Switch is in the ON Position The following table lists the processing that occurs given the stated condition SSP SVX14C EN Start Up Condition Resulting Operations 1 Currentis supplied to the compressor crankcase heater s CCH through the normally closed contacts of the crankcase heater relay CHR when the compressor is not running 2 The phase monitor PM is powered 3 The phase monitor PM looks at the incoming power to verify that there is no reversed phase no phase imbalance and no loss of phase If the phase monitor detects any of these three conditions it will shut off control voltage 4 Thecontrol transformer TNS is powered If the disconnect switch is in the ON position 5 The ReliaTel control board RTRM is powered and performs self diagnostic checks to insure that all internal controls are functioning connected to the system 6 TheReliaTel control board RTRM checks the configuration parameters against the components 7 The system LED located the RTRM module is turned ON within one second after power up if all internal operations are correct 8 Thecommunications board COMM is powered if installed 9 indoor thermostat TS is powered Mechanical Heat In Heat mode the switchover valve SOV is turned OFF When a request for heating occurs the control sys
27. DDOTAA TWA076DDHRAA TWA076DDHTAA TWA076DDOUAA TWA076DDOWAA TWA076DDHUAA TWA076DDHWAA TWA090D30RAA TWA090D30TAA TWAO90D3HRAA TWA090D3HTAA TWA090D30UAA TWA090D30WAA TWA090D3HUAA TWA090D3HWAA TWA090D40RAA TWA090D40TAA TWA090D4HRAA TWA090DA4HTAA TWA090D40UAA TWA090D40WAA TWA090D4HUAA TWA090D4HWAA TWAO90DWORAA TWA090DWOTAA TWA090DWHRAA TWA090DWHTAA TWA090DWOUAA TWA090DWOWAA TWA090DWHUAA TWA090DWHWAA TWAO090DKORAA TWA090DKOTAA TWA090DKHRAA TWAOSODKHTAA TWAO090DKOUAA TWA090DKOWAA TWAO90DKHUAA TWAO90DKHWAA TWA101DDORAA TWA101DDOTAA TWA101DDHRAA TWA101DDHTAA TWA101DDOUAA TWA101DDOWAA TWA101DDHUAA TWA101DDHWAA TWA120D40RAA TWA120D40TAA TWA120D4HRAA TWA120D4HTAA TWA120D40UAA TWA120D40WAA TWA120D4HUAA TWA120D4HWAA TWA120DWORAA TWA120DWOTAA TWA120DWHRAA TWA120DWHTAA TWA120DWOUAA TWA120DWOWAA TWA120DWHUAA TWA120DWHWAA TWA120DKORAA TWA120DKOTAA TWA120DKHRAA TWA120DKHTAA TWA120DKOUAA TWA120DKOWAA TWA120DKHUAA TWA120DKHWAA 44 SSP SVX14C EN Table 17 Wiring schematics R 410A heat pump continued Wiring Diagram Matrix Unit Model Numbers TWA120D30RAA TWA120D30TAA TWA120D3HRAA TWA120D3HTAA TWA120D30UAA TWA120D30WAA TWA120D3HUAA TWA120D3HWAA TWA156EDORAA TWA156EDOTAA TWA156EDHRAA TWA156EDHTAA TWA156EDOUAA Diagram Number Diagram Type 2313 0420 Connection Diagram 2313 0429 Connection Diagram TWA156EDOWAA TWA156EDHUAA TWA156EDHWAA TWA180E30RAA TWA1
28. E BULB TUBE VALVE A HIGH PRESSURE SWITCH HPCO OUTDOOR COIL oo CHE s VALVES COMPRESSOR a note A gt VALVE gt INDICATES DIRECTION OF NOTE A ONLY ONE OUTDOOR AND INDOOR REFRIGERANT FLOW COIL REFRIGERANT ENTRY AND EXIT CIRCUIT IS SHOWN ALL MODELS HAVE MULTIPLE ENTRY AND EXIT CIRCUITS NOTE B DUAL CIRCUIT MODELS HAVE 2 REFRIGERATION CIRCUITS 22 SSP SVX14C EN Installation Figure 17 Typical split system heat pump heating refrigerant circuit HEAT PUMP CIRCUIT DIAGRAM HEATING MODE FIELD SUPPLIED INTER CONNECTING TUBING NOTEA EQUALIZER M LINE SERVIC EQUALIZER A UNE AWAY VALVE SWITCHOVER VALVE ri O P J VNNEBULB m HIGH PRESSURE lt SWITCH HPCO AR OUTDOOR COIL PCO lt 5 a lt m B lt CHECK GAUGE VALVES CONNECTIONS DISCHARGE TEMPERATURE LIMIT OT SERVICE VALVE DE CE LOOP lt o gt NOTE A ONLY ONE OUTDOOR AND INDOOR COIL REFRIGERANT ENTRY AND EXIT CIRCUIT IS SHOWN ALL MODELS HAVE MULTIPLE ENTRY AND EXIT CIRCUITS NOTE B DUAL CIRCUIT MODELS HAVE 2 REFRIGERATION CIRCUITS INDICATES DIRECTION OF REFRIGERANT FLOW SSP SVX14C EN 23 Electrical Data Table5 Electrical characteristics compressor and condenser fan motors heat pumps 60 Hz C
29. HUAA TWA073D3HWAA TWA073D40RAA TWA073D40TAA TWA073D4HRAA TWA073D4HTAA TWA073D40UAA TWA073D40WAA TWA073D4HUAA TWA073D4HWAA TWA073DWORAA TWA073DWOTAA TWA073DWHRAA TWA073DWHTAA TWA073DWOUAA TWA073DWOWAA TWA073DWHUAA TWA073DWHWAA TWA073DKORAA TWAO073DKOTAA TWA073DKHRAA TWA073DKHTAA TWA073DKOUAA TWA073DKOWAA TWA073DKHUAA TWA073DKHWAA TWA076DDORAA TWA076DDOTAA TWA076DDHRAA TWA076DDHTAA TWA076DDOUAA TWA076DDOWAA TWA076DDHUAA TWA076DDHWAA TWA090D30RAA TWA090D30TAA TWAO90D3HRAA TWA090D3HTAA TWA090D30UAA TWA090D30WAA TWA090D3HUAA TWA090D3HWAA TWA090D40RAA TWA090D40TAA TWA090D4HRAA TWA090D4HTAA TWA090D40UAA TWA090D40WAA TWA090D4HUAA TWA090D4HWAA TWAO90DWORAA TWA090DWOTAA TWA090DWHRAA TWA090DWHTAA TWA090DWOUAA TWA090DWOWAA TWA090DWHUAA TWA090DWHWAA TWAO090DKORAA TWA090DKOTAA TWA090DKHRAA TWAOSODKHTAA TWAO90DKOUAA TWA090DKOWAA TWAO90DKHUAA TWAO90DKHWAA TWA101DDORAA TWA101DDOTAA TWA101DDHRAA TWA101DDHTAA TWA101DDOUAA TWA101DDOWAA TWA101DDHUAA TWA101DDHWAA TWA120D40RAA TWA120D40TAA TWA120D4HRAA TWA120D4HTAA TWA120D40UAA TWA120D40WAA TWA120D4HUAA TWA120D4HWAA TWA120DWORAA TWA120DWOTAA TWA120DWHRAA TWA120DWHTAA TWA120DWOUAA TWA120DWOWAA TWA120DWHUAA TWA120DWHWAA TWA120DKORAA TWA120DKOTAA TWA120DKHRAA TWA120DKHTAA TWA120DKOUAA TWA120DKOWAA TWA120DKHUAA TWA120DKHWAA TWA156EDORAA TWA156EDOTAA TWA156EDHRAA TWA156EDHTAA TWA156EDOUAA TWA156EDOWAA TWA156EDHUAA TWA156EDHWAA
30. 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 ON 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 39 Troubleshooting This indicator is usually used to indicate an airside fan failure The RTRM will ignore the closing of this Normally Open switch for 2 x1 minutes This helps prevent nuisance SERVICE LED indications Temperature Tests 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 can be tested by measuring the resistance between terminals 1 and 2 on the Zone Temperature Sensor See Table 15 p 40 for typical
31. TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100 2540 MINIMUM UNIT SHOULD BE PLACED SO ROOF RUN OFF WATER DOES NOT POUR DIRECTLY ON UNIT 4 OUTDOOR AIR TEMPERATURE SENSOR OPENING DO NOT BLOCK OPENING HAIL GUARD OPTIONAL 35 15 16 912 8 WITH HAIL GUARD SEE NOTE 1 Ine as pum RANT ACCESS pot Ee pA OP Oy f 39 3 16 SERVICE PANEL 995 4 26 15 16 684 2 14 3 8 Pee este eara 365 1 a Te Y i C ag 3 1 16 77 8 K L 6 152 4 77 9 152 4 111 16 550 9 411 16 1043 33 13 16 4 858 8 42 1 8 1070 3 76 2 34 3 4 40 3 4 882 7 1035 4 3 46 106 4 1 13 16 46 BOTTOM OF UNIT 27 11 16 703 3 WITH HAIL GUARD SERVICE PANEL SIDE d OO 080 o 7 16 11 1 DIA ISOLATOR MOUNTING HOLES OUTSIDE HOLES 4 PLACES 2 2 5 16 58 7 11 Dimensional Data Figure 4 8 33 10 ton heat pump single compressor SEE NOTE 3 NOTES 1 ACCESS OPENING IS FOR FIELD INSTALLED BAYLOAM ACCESSORY 2 MINIMUM CLEARANCE FOR PROPER OPERATION IS 36 914 4 FROM WALLS SHRUBBERY PRIVACY FENCES ETC MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72 1828 8 RECOMMENDED SERVICE CLEARANCE 48 1219 2 3 TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100 2540 MINIMUM
32. TWA180E30RAA TWA180E30TAA TWA180E3HRAA TWA180E3HTAA TWA180E30UAA TWA180E30WAA TWA180E3HUAA TWA180E3HWAA TWA180E40RAA TWA180E40TAA TWA180E4HRAA TWA180E4HTAA TWA180E40UAA TWA180E40WAA TWA180E4HUAA TWA180E4HWAA TWA180EWORAA TWA180EWOTAA TWA180EWHRAA TWA180EWHTAA TWA180EWOUAA TWA180EWOWAA TWA180EWHUAA TWA180EWHWAA TWA180EKORAA TWA180EKOTAA TWA180EKHRAA TWA180EKHTAA TWA180EKOUAA TWA180EKOWAA TWA180EKHUAA TWA180EKHWAA TWA201EDORAA TWA201EDOTAA TWA201EDHRAA TWA201EDHTAA TWA201EDOUAA TWA201EDOWAA TWA201EDHUAA TWA201EDHWAA TWA240E40RAA TWA240E40TAA TWA240E4HRAA TWA240E4HTAA TWA240E40UAA TWA240E40WAA TWA240E4HUAA TWA240E4HWAA TWA240EWORAA TWA240EWOTAA TWA240EWHRAA TWA240EWHTAA TWA240EWOUAA TWA240EWOWAA TWA240EWHUAA TWA240EWHWAA TWA240EKORAA TWA240EKOTAA TWA240EKHRAA TWA240EKHTAA TWA240EKOUAA TWA240EKOWAA TWA240EKHUAA TWA240EKHWAA TWA061DDORAA TWA061DDOTAA TWA061DDHRAA TWA061DDHTAA TWA061DDOUAA TWA061DDOWAA TWA061DDHUAA TWA061DDHWAA TWA073D30RAA TWA073D30TAA TWA073D3HRAA TWA073D3HTAA TWA073D30UAA TWA073D30WAA TWA073D3HUAA TWA073D3HWAA TWA073D40RAA TWA073D40TAA TWA073D4HRAA TWA073D4HTAA TWAO073D40UAA TWA073D40WAA TWA073D4HUAA TWA073D4HWAA TWA073DWORAA TWA073DWOTAA TWA073DWHRAA TWA073DWHTAA TWA073DWOUAA TWA073DWOWAA TWA073DWHUAA TWA073DWHWAA TWA073DKORAA TWAO073DKOTAA TWA073DKHRAA TWA073DKHTAA TWA073DKOUAA TWA073DKOWAA TWA073DKHUAA TWA073DKHWAA TWA076DDORAA TWA076
33. Temperature Sensor ZTS Service Indicator llle 39 Temperature Tests 40 Test 1 Zone Temperature Thermistor ZTEMP 40 Test 2 Cooling Set Point CSP and Heating Set Point HSP 40 Test 3 System Mode and Fan Selection e Net Seier e te 40 Test 4 LED Indicator Test SYS ON HEAT amp COOL 41 Programmable amp Digital Zone Sensor E EE 41 Testing Serial Communication 41 RLCI Loss of Communications 41 Maintenance 42 Monthly x cre tr tante taut ence uds 42 Annually Cooling Season 42 Coil Cleaning 42 SSP SVX14C EN Table of Contents Maintenance Log 43 Wiring Diagram Matrix 44 SSP SVX14C EN 5 Model Number Description Heat Pump Condenser TWA 240 E 3 00 123 456 7 8 910 11 12 TWA 201 E 00 123 456 7 8 910 11 12 All products are identified by a multiple character model numberthat precisely identifies a particular type of unit An explanation ofthe alphanumeric identification code is provided Its use will enable the owner operator installing contractors and service engineers to define the operation specific components and other options for any specific unit When ordering replacement parts or requesting service be sure to refer to the speci
34. UNIT SHOULD BE PLACED SO ROOF RUN OFF WATER DOES NOT POUR DIRECTLY ON UNIT 4 OUTDOOR AIR TEMPERATURE SENSOR OPENING DO NOT BLOCK OPENING SERVICE PANEL SEE NOTE 4 HAIL GUARD OPTIONAL SERVICE CLEARANCE 48 1219 2 SEE NOTE 2 FOR CLEARANCE 4 1 4 39 15 16 4 1 4 108 1014 4 SEE NOTE 1 HAIL GUARD 1 4 31 7 WITH HAIL GUARD OPTIONAL PINE VOLTAGE 37 15 16 REFRIGERANT ACCESS CONTROL WIRING 963 6 E Eg CG me J N 42 5 16 SERVICE PANEL 44 34 35 3 4 1074 7 1136 6 5 9 16 908 32 7 8 d 141 3 835 T 14 5 16 363 5 LEE ESE re 1 5 1 16 1 6 et LIQUID LINE 6 152 4 6 152 4 1 13 16 46 652 5 4 101 6 SUCTION LINE 5 37 11 16 4 27 8 73 4 4 3 8 111 1 957 3 rene 1293 8 SERVICE PANEL SIDE 51 15 16 1319 2 WITH HAIL GUARD 3 76 2 A 7 16 11 1 DIA ISOLATOR MOUNTING HOLES OUTSIDE HOLES 4 PLACES 44 3 4 50 3 4 1136 6 1289 BOTTOM OF UNIT 3 13 16 96 8 2 3 16 31 11 16 1 41 46 55 6 805 42 9 12 SSP SVX14C EN Dimensional Data Figure5 13 15 16 7 20 ton heat pump dual compressor AKRE SEE NOTE 2
35. WARNING Proper Field Wiring and Grounding Required Failure to follow code could result in death or serious injury 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 A WARNING Personal Protective Equipment PPE Required Failure to wear proper PPE for the job being undertaken could result in death or serious injury Technicians in order to protect themselves from potential electrical mechanical and chemical hazards MUST follow precautions in this manual and on the tags stickers and labels as well as the instructions below e Before installing servicing this unit technicians MUST put on all Personal Protective Equipment PPE recommended for the work being undertaken ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE e When working with or around hazardous chemicals ALWAYS refer to the appropriate MSDS sheets and OSHA guidelines for information on allowable personal exposure levels proper respiratory protection and handling recommendations e fthere is a risk of arc or flash technicians MUST put on all Personal Protective Equipment PPE in accordance with NFPA 70E or other country specific requirements for arc flash protection PRIOR to
36. arting a unit it is advisable to have the approved oils available in the event oil needs to be added to the system NOTICE Equipment Damage This is POE oil which readily absorbs moisture Always use new oil and never leave containers open to atmosphere while not in use Table3 TWA approved oils Unit Model Number Approved Oils TWAO061 TWA073 TWA076 TWAOSO TWA101 TWA120 Trane Oil Part Number OILOO094 TWA156 TWA180 TWA201 1 quart container TWA240 For units equipped with compressors containing site glasses the oil level must be visible through the sight glass when the compressor is running under stabilized conditions and a few minutes after the compressor has stopped Refrigerant Charging Procedure If charging by weight refer to Table 4 p 18 for starting change If refrigerant adjustments are needed because of length of line refer to Charging Charts and Superheat p 26 Charge by weight through the gauge port on the liquid line Once the charge enters the system backseat open the liquid line service valve and disconnect the charging line and replace the cap on the gauge port Notes e R 410A should only be charged in the liquid state e When possible always charge the refrigerant into the liquid line of the unit e Ifthe entire charge can t be charged into the liquid line the balance of the unit charge can be metered through a charging manifold set as liquid prefe
37. auge pressure rises above 500 microns in one minute then evacuation is incomplete or the system has a leak 6 If vacuum gauge does not rise above 500 microns in 10 minutes the evacuation should be complete Equipment Damage Charge with access port on the liquid line service valve only 7 With vacuum pump and micron gauge blanked off open valve on R 410A cylinder and allow refrigerant pressure to build up to about 80 psig 8 Close valve on the R 410A supply cylinder Close valves on manifold gauge set and remove refrigerant charging hoses from liquid and gas Installation gauge ports 9 Leaktestthe entire system Using proper procedures and caution as described in the previous section repair any leaks found and repeat the leak test Insulating and Isolating Refrigerant Lines Insulate the entire suction line with refrigerant piping insulation Also insulate any portion ofthe liquid line exposed to temperature extremes Insulate and isolate liquid and suction lines from each other Isolate refrigerant lines from the structure and any duct work Important 1 To prevent possible noise or vibration problems be certain to isolate refrigerant lines from the building 2 All suction and hot gas bypass piping if installed should be insulated from the termination in the air handler to the condensing unit cabinet entry Failure to do so can cause condensate drip off and performance degradation 3 Priorto st
38. 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 p 38 or Method 2 p 39 in the System Status Checkout Procedure section check the following e System status e Heating status e Cooling status Note If a System failure is indicated proceed to Step 4 If no failures are indicated proceed to Step 5 4 If a System failure is indicated recheck Step 1 and Step 2 If the LED is not lit in Step 1 and 24 VAC is present in Step 2 then the RTRM has failed Replace the RTRM f no failures are indicated use one of the TEST mode procedures described in the Service Test Modes chapter 37 to start the unit This procedure will allow you to check all of the RTRM 38 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 t
39. ced 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 improvements and reserves the right to change design and specifications without notice 2014 Trane All rights reserved SSP SVX14C EN 14 Jan 2014 We are committed to using environmentally d P ngersoll Rand Supersedes SSP SVX14B EN December 2011 conscious print practices that reduce waste
40. damaged parts with authorized parts only Inspection Checklist To protect against loss due to damage incurred in transit complete the following checklist upon receipt of the unit Inspect individual pieces of the shipment before accepting the unit Check for obvious damage to the unit or packing material Inspect the unit for concealed damage before it is stored and as soon as possible after delivery Concealed damage must be reported within 15 days If concealed damage is discovered stop unpacking the shipment Do not remove 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 Notify the carrier s terminal of damage immediately by phone and by mail Request an immediate joint inspection of the damage by the carrier and the consignee Notify the sales representative and arrange for repair Do not repair the unit until the damage is inspected by the carrier s representative Testing for Leaks All units are shipped with a holding charge of nitrogen in each circuit and should be leak tested before installation 1 Remove the access panel 2 Locate the liquid line or suction line access valve for each circuit 3 Install gauges to determine if the circuits are still pressurized If not the charge has escaped and should be repaired as required to obtain a leak fre
41. e circuit Lifting Recommendations A WARNING Improper Unit Lift Failure to properly lift unit could result in unit dropping and possibly crushing operator technician which could result in death or serious injury and equipment or property only damage 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 NOTICE Equipment Damage Use spreader bars to prevent straps from damaging the unit Install the bars between lifting straps both underneath the unit and above the unit to prevent the straps from crushing the unit cabinet or damaging the finish Before preparing the unit for lifting estimate the approximate center of gravity for lifting safety Because of placement of internal components the unit weight may be unevenly distributed See Weights p 14 for approximate unit weights The crated unit can be moved using a forklift of suitable capacity For lifting the unit attach lifting straps or slings securely to the lifting holes at each corner see unit drawings in Weights p 14 Use spreader bars to protect the unit casing from damage Test lift the unit to determine proper balance and stability Clearances Provide enough space around the unit to allow unrestricted access to all service points Refer to the Dimensional Data p 10 for unit dimensions and minimum required service and free air c
42. ents and panels removed in Step 1 then restore power to the unit 10 Using a fin comb straighten any coil fins that were inadvertently bent during the cleaning process SSP SVX14C EN Maintenance Maintenance Log si al uose s Bulloo3 buunp u3uouu Jad T HND T PNI Ci T 1 1 55 oB4euosiq 9Jnssa4d uon ns Aoss iduuoo je AJAoss iduuoo diy 6ui193u3 1038400de 3 40 Buljoooqns do 13e9u1odns do duet juaiquiy 43 SSP SVX14C EN Wiring Diagram Matrix Diagram Number Table 17 Wiring schematics R 410A heat pump 2313 0405 Diagram Type Power Control Diagram Unit Model Numbers TWA120D30RAA TWA120D30TAA TWA120D3HRAA TWA120D3HTAA TWA120D30UAA TWA120D30WAA TWA120D3HUAA TWA120D3HWAA TWA240E30RAA TWA240E30TAA TWA240E3HRAA TWA240E3HTAA TWA240E30UAA TWA240E30WAA TWA240E3HUAA TWA240E3HWAA 2313 0406 2313 0419 Connection Diagram Power Control Diagram TWA061DDORAA TWA061DDOTAA TWA061DDHRAA TWA061DDHTAA TWA061DDOUAA TWA061DDOWAA TWA061DDHUAA TWA061DDHWAA TWA073D30RAA TWA073D30TAA TWA073D3HRAA TWA073D3HTAA TWA073D30UAA TWA073D30WAA TWA073D3
43. epending on type of outdoor unit s Zone Sensor 4 to 10 wires depending on zone sensor modela m mon gt Night Setback Panel 7 wires For SZVAV air handlers 4 additional wires are required 2 of which require twisted pair or shielded wire in order to make connections between ReliaTel boards in the condenser and air handler SSP SVX14C EN Installation Field Wiring Figure 13 Night setback panel field wiring QUTDOOR SECTION TWA CONDENSER LTB RELIATEL RTRM J6 OUTDOOR INDOOR NIGHT SETBACK PANEL 5019 ELECTRIC HEAT ACCESSORY 6 7 8 9 10 11 12 14 INDOOR SECTION Figure 14 Zone sensor field wiring QUTDOOR SECTION TWA CONDENSER LTB RELIATEL RTRM J6 ES 00 N O Q gt r GE INDOOR N y ZONE SENSOR lt BAY SENS010 gt Dc ELECTRIC HEAT E ACCESSORY INDOOR SECTION OUTDOOR SSP SVX14C EN 21 Installation Figure 15 Thermostat field wiring OUTDOOR SECTION TWA CONDENSER LTB RELIATEL RTRM J7 OUTDOOR INDOOR THERMOSTAT CTYPICAL MANUAL CHANGEOVER ELECTRIC B RH RC Y1 Ye G D Vi Xe HEAT ACCESSORY INDOOR SECTION Refrigerant Circuit Figure 16 Typical split system heat pump cooling refrigerant circuit HEAT PUMP CIRCUIT DIAGRAM COOLING MODE FIELD SUPPLIED INTER CONNECTING H EQUALIZER r AWAY SWITCHOVER VALVE EXPANSION VALVE BULB FILTER DRIER EXPANSION EQUALIZER SERVICE VALV
44. er during a defrost cycle only the circuit that requires a defrost cycle will energize its switchover valve SOV For thermostat control if a thermostat is requesting for the switchover SOV to be energized or de energized both switchover valve SOV outputs will follow the thermostat request unless a circuit is in a defrost cycle Defrost Configuration Facts Units are configured from the factory to have Independent Circuit defrost RTRM input J9 3 tied to ground with RTRM input J1 5 OPEN Inputs Outputs yi Y2 G W1 W2 x2 Cool Heat1 Indoor Fan ON OFF Bost Dans OFF HEAT OFF OFF Stage 1 ON Care Care OFF ON Dont Stage 2 ON Care Care ON ON Dont Dant OFF HEAT OFF OFF Stage Iot ON Care Care Stage 2 Don t Don t Stage 1 ON OFF Cara ON HEAT OFF OFF Auxiliary ON OFF ON pomt Dong ON HEAT OFF OFF Stage 2 ON Care Care Auxiliary Stage 1 ON ON pu t ri t ON HEAT OFF OFF Stage 2 ON ES Auxiliary 34 SSP SVX14C EN Table 10 Heat pump operation with thermostat continued Start Up Inputs Outputs Yi Y2 G W1 w2 x2 Cool Heat1 Indoor Fan Don t Don t Don t Don t Don t Don t Care Care Care Care Care Care ON QER Note Stage 1 Circuit 1 and Stage 2 Circuit 2 Table 11 Heat pump operation with a zone sensor Table 11 Heat pump operation with a zone sensor wi
45. ernal Overload Protector IOL This device is embedded in the compressor It will shut off the compressor if the discharge temperature of the compressor exceeds its design trip temperature Note The IOL will put the compressor back in operation once the compressor motor heat has dropped below the trip setting however a check of the refrigerant and electrical systems should be made to determine the cause and be corrected 31 Start Up ReliaTel Controls The ReliaTel Control is a microelectronic control feature which provides operating functions that are significantly different than conventional Electromechanical units The ReliaTel Refrigeration Module RTRM uses proportional integral control algorithms to perform specific unit functions that govern the unit operation in response to application conditions The RTRM provides compressor anti short cycle ASC timing functions through minimum Off and On timing to increase reliability performance and to maximize unit efficiency Upon power initialization the RTRM performs self diagnostic checks to insure that all internal controls are functioning It also checks the configuration parameters against the components connected to the system The system LED located on the RTRM module is turned On within one second after power up if all internal operations are correct The heating and cooling cycles of the heat pump are automatic for Heat and Cool functions when using an
46. essurizing units SSP SVX14C EN Installation A WARNING Hazard of Explosion Failure to follow recommended safe leak test procedures could result in death or serious injury or equipment or property only damage Never use an open flame to detect gas leaks Use a leak test solution for leak testing After the brazing operation of refrigerant lines to both the outdoor and indoor unit is completed the field brazed connections must be checked for leaks Pressurize the system through the service valve with dry nitrogen to 200 psi Use soap bubbles or other leak checking methods to ensure that all field joints are leak free If not release pressure repair and repeat leak test System Evacuation 1 After completion of leak check evacuate the system 2 Attach appropriate hoses from manifold gauge to gas and liquid line pressure taps Note Unnecessary switching of hoses can be avoided and complete evacuation of all lines leading to sealed system can be accomplished with manifold center hose and connecting branch hose to a cylinder of R 410A and vacuum pump 3 Attach center hose of manifold gauges to vacuum pump Operating Under Vacuum Do not operate or apply power to the compressor while under a vacuum Failure to follow these instructions will result in compressor failure 4 Evacuate the system to hold a 500 micron vacuum 5 Close off valve to vacuum pump and observe the micron gauge If g
47. fference is large enough a defrost cycle is initiated Demand Defrost is initiated when the outdoor air temperature OAS is below 52 F and the outdoor coil temperature CTS is below 33 F Table 10 Heat pump operation with thermostat Single and Dual Circuits When a circuit enters Defrost mode the compressor will remain energized the associated outdoor fan ODF will de energize the associated switchover valve SOV output will energize and the first stage of Auxiliary Heat energizes On dual circuit units the opposite circuit s state will remain unchanged if a defrost cycle has not been initiated on that circuit Each circuit will enter defrost independently based on its associated Outdoor Coil Temperature Sensor CTS the Outdoor Air Temperature Sensor OAS and its total accumulated run time Termination of the Defrost Cycle A circuit will leave defrost during normal conditions once the outdoor coil temperature reaches the outdoor air temperature 47 F which must be above 57 F and not greater than 72 Termination of the defrost cycle includes a Soft Start delay of 5 seconds for the switchover valve SOV where the outdoor fans ODF are turned on 5 seconds before the switchover valve SOV is returned to the heating position to help smooth the transition Behavior of Switchover Valves The switchover valves SOV will both be energized during cooling mode and will be de energized during Heat or OFF mode Howev
48. fic model number serial number and DL number if applicable stamped on the unit nameplate DIGITS 1 3 Product Type TWA Split System Heat Pump DIGITS 4 6 Nominal Gross Cooling Capacity MBh 061 5 Tons 50Hz 076 6 25 Tons 50Hz 101 8 33 Tons 50Hz 156 13 0 Tons 50Hz 201 16 7 Tons 50Hz 090 7 5 Tons 60Hz 120 10 Tons 60Hz 180 15 Tons 60Hz 240 20 Tons 60Hz DIGIT 7 Major Development Sequence D Single Compressor Single Circuit E Dual Compressor Dual Circuit 1 sequential alpha character 6 DIGIT 8 Electrical Characteristics 3 208 230 60 3 4 460 60 3 W 575 60 3 D 380 415 50 3 K 380 60 3 DIGITS 9 10 Factory Installed Options 00 Packed Stock OR ReliaTel no LCI Board ReliaTel no LCI Board with Black Epoxy Coated Coil OU ReliaTel with LCI Board OW ReliaTel with Board and Black Epoxy Coated Coil HR Hail Guard with ReliaTel no LCI Board HT Hail Guard with ReliaTel no LCI Board with Black Epoxy Coated Coil HU Hail Guard with ReliaTel with LCI Board HW Hail Guard with ReliaTel with LCI Board and Black Epoxy Coated Coil DIGITS 11 Minor Design Sequence Current Design Sequence DIGITS 12 Service Digit Current Design Sequence SSP SVX14C EN General Information This manual describes proper installation operation and maintenance procedures for air cooled systems By carefully reviewing the
49. he test mode by turning the power Off at the main power disconnect switch 8 Referto the individual component test procedures if other microelectronic components are suspect System Status Checkout Procedure System Status is checked by using one ofthe following two methods Method 1 If the Zone Sensor Module ZSM is equipped with a remote panel with LED status indication you can check the unit within the space If the ZSM does not have use Method 2 p 39 BAYSENSO10B BAYSENS011B BAYSENS119A BAYSENS020A BAYSENS021A BAYSENS023A BAYSENS109 and BAYSENS110 all have the remote panel indication feature The LED descriptions are listed below 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 On when the heat cycle is operating Off when the heat cycle terminates or the LED fails Flashing indicates a heating failure LED 3 Cool On when the cooling cycle is operating Off when the cooling cycle terminates or the LED fails Flashing indicates a cooling failure The following information describes the complete listing of failure indication causes SSP SVX14C EN System Failure Check the voltage between terminals 6 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 f
50. his procedure is accomplished with the unit operating Electrical connections must be complete Do not proceed until the system is ready to operate Note The compressor access panel must be installed when the unit is running and being charged Manifold hoses must be routed through refrigerant gauge access hole s See Dimensional Data p 10 for specific locations WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is 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 1 Turn on power to the unit Allow the system to run for 15 minutes to stabilize operating conditions 2 Measure airflow across the indoor coil Compare the measurements with the fan performance data in the Data Submittal or Service Facts Once proper airflow is established compare discharge pressure and liquid temperature to the Charging Charts p 26 Add or remove refrigerant liquid only as required to obtain correct discharge pressure and liquid temperature 3 Check suction line superheat and condenser sub cooling to ensure the unit is operating properly 4 Disconnect all power to the unit SSP SVX14C EN Important If the unit is charged and left without po
51. le contingency that may be encountered during an installation If additional information is required or if specific problems arise that are not fully discussed in this manual contact your local sales office Use the Installation Checklist p 30 provided In this manual to verify that all necessary installation procedures have been completed Do not use the checklist as a substitute for reading the information contained in the manual Read the entire manual before beginning installation procedures Unit Description These condensers come with single and dual compressor options Single compressor outdoor units feature a single refrigeration circuitry requiring only one set of refrigerant lines Dual compressor dual circuit models give true stand by protection if one compressor fails the second will automatically start up Also the first compressor can be serviced without shutting down the unit since the refrigerant circuits are independent During light load conditions only one compressor will operate to save energy Pre Installation Unit Inspection Inspect material carefully for any shipping damage If damaged it must be reported to and claims made against the transportation company Compare the information that appears on the unit nameplate with ordering and submittal data to ensure the proper unit was shipped Available power supply must be compatible with electrical characteristics specified on component nameplates Replace
52. learances Observe the following points to ensure proper unit operation 1 Do not install the unit under a low overhang Condenser discharge must not be restricted refer to notes in Dimensional Data drawings p 10 Important Do not obstruct condenser discharge air This can result in warm air recirculation through the coil 2 Do notlocate the unit in a position where runoff water can fall into the fan discharge openings 3 Condenser intake air is supplied from three or four sides ofthe unit Adhere to the minimum required clearances given in unit dimensional drawings see Dimensional Data p 10 SSP SVX14C EN Unit Mounting A WARNING Mounting Integrity Failure to follow instruction below could result in death or serious injury or possible equipment or property only damage Ensure the roof structure supports are strong enough to support the weight of the unit and any accessories Structural Preparation Roof Damage System contains oil and refrigerant under high pressure Roofs should be protected from exposure to oils and refrigerant in the system If rooftop is not protected damage to the roof may occur Important Refer to local building codes for proper installation All installation must comply with local building codes Rooftop Mounting Ifthe unit will be roof mounted determine for certain thatthe structure is strong enough to support the unit and any required accessorie
53. least 6 F hour 0 1 F minute the electric heat is disabled If Smart Recovery is not disabling electric heat an approximate 9 minute stage up delay plus or minus a few minutes is provided for each stage to allow time for recovery to begin Stages of electric heat are enabled and energized as necessary to meet heating demand When the request for Auxiliary Heat is removed the Indoor Fan request is turned OFF at the same time as the Electric Heat Stages See Table 10 p 34 Table 11 p 35 Table 12 p 35 and Table 13 p 35 for the staging sequence and control All split system units are also configured from the factory for only 1 Stage of Electric Heat Jumper placed between J1 3 and J1 6 RTRM inputs To enable two stages of Electric Heat cut or remove the jumper between J1 3 and J1 6 RTRM inputs Emergency Heat When Emergency Heat mode is requested and Auxiliary Electric Heat is configured and installed only the Auxiliary Electric Heat will be turned ON to satisfy the Heat request Mechanical heat will be held OFF When the request for Emergency Heat is initiated the Indoor Fan request is turned ON 1 second before the electric heat stages are activated See Table 10 p 34 Table 11 p 35 Table 12 p 35 and Table 13 p 35for the staging sequence and control Cooling With a request for Cooling the RTRM stages the circuits and control normally for single and dual stage 33 Start Up cooling applications If
54. maintenance procedures at the intervals scheduled This will prolong the life of the unit and reduce the possibility of costly equipment failure Monthly Conduct the following maintenance inspections once per month Check unit wiring to ensure all connections are tight and that the wiring insulation is intact Inspect the condenser coils for dirt and debris If the coils appear dirty clean them With the unit operating in the cooling mode check the suction and discharge pressures and compare them with Pressure Curve values in unit Service Facts Record these readings on the Maintenance Log p 43 Annually Cooling Season The following maintenance procedures must be performed at the beginning of each cooling season to ensure efficient unit operation Perform all of the monthly maintenance inspections With the unit operating check unit superheat and record the reading in the Maintenance Log p 43 42 Remove any accumulation of dust and or dirt from the unit casing Remove corrosion from any surface and repaint Check the gasket around the control panel door to ensure it fits correctly and is in good condition to prevent water leakage Inspect the control panel wiring to ensure that all connections are tight and that the insulation is intact Note Condenser fan motors are permanently lubricated Check refrigerant piping and fitting
55. mergency Heat Auto 43 45K Emergency Heat On Emergency Heat On Out of Range Short INVALID Short Invalid CV Auto VAV Invalid Out of Range Open INVALID Open Invalid CV Off VAV Invalid 40 SSP SVX14C EN Test 4 LED Indicator Test SYS ON HEAT amp COOL A WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is 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 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 reverse 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 LED s with ZSM connected to unit test voltages at LED terminals on ZSM A measurement of 32 VDC across an unlit LED
56. n line service valves Check that the piping connection stubs on the valves Figure 10 p 16 line up properly with the holes in the unit cabinet Figure 10 Outdoor units refrigerant piping with dry nitrogen GAS LINE GAUGE PORT GAS LINE SERVICE VALVE LIQUID LINE GAUGE PORT LIQUID LINE SERVICE VALVE MANIFOLD GAUGES FROM DWG A668541 3 Remove the refrigerant connection seal caps and open the service valve slowly to release the nitrogen from the unit NOTICE System Component Damage Do not remove the seal caps from refrigerant connections or open the service valves until prepared to braze refrigerant lines to the connections Excessive exposure to atmosphere 5 min may allow moisture or dirt to contaminate the system damaging valve seals and causing ice formation in system components A WARNING Hazard of Explosion and Deadly Gases Failure to follow all proper safe refrigerant handling practices could result in death or serious injury Never solder braze or weld on refrigerant lines or any unit components that are above atmospheric pressure or where refrigerant may be present Always remove refrigerant by following the guidelines established by the EPA Federal Clean Air Act or other state or local codes as appropriate After refrigerant removal use dry nitrogen to bring system back to atmospheric pressure before opening system for repairs Mixtures of refrigerants and air under pressure
57. nnected to the system The system LED located on the RTRM module is turned On within one second of power up if internal operation is okay Use one of the following Test procedures to bypass some time delays and to start the unit at the control panel Each step of unit operation can be activated individually by temporarily shorting across the Test terminals for 2 to 3 seconds The system 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 system LED will glow continuously and the unit will revert to the System control There are three methods in which the Service Test can be cycled at LTB Test 1 T1 and LTB Test 2 T2 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 2 to 3 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 Service Test Mode will be ignored if a short is present across Test 1 and Test 2 at start up Resistance Test Mode This method can be used for start up when a decade box for variable resistance outputs is available This method initiates the different components of
58. ompressor Motor Condenser Fan Motor Unit Amps Amps Tons Model Number No Volts Phase RLA LRA No Volts Phase FLA LRA Ea Ea Ea Ea TWA073D3 1 208 230 3 22 4 149 1 208 230 l S 8 1 TWA073D4 1 460 3 10 6 75 1 460 1 1 6 3 8 6 TWA073DK 1 380 3 11 3 88 1 380 1 2 7 TWA073DW 1 575 3 8 3 54 1 575 1 1 2 TWA090D3 1 208 230 3 25 164 1 208 230 1 3 1 8 1 TWA090D4 1 460 3 13 100 1 460 1 1 6 3 8 oe TWAOSODK 1 380 3 14 3 94 3 1 380 1 2 7 7 TWA090DW 1 575 3 10 8 78 1 575 1 1 2 3 TWA120D3 1 208 230 3 30 1 225 1 208 230 1 5 14 4 TWA120D4 1 460 3 16 7 114 1 460 1 2 5 5 8 us TWA120DK 1 380 3 24 4 145 1 380 I 3 4 7 8 TWA120DW 1 575 3 12 3 80 1 575 1 5 1 TWA180E3 2 208 230 3 25 164 2 208 230 1 14 4 TWA180E4 2 460 3 12 6 100 2 460 1 2 5 5 8 s TWA180EK 2 380 3 14 3 94 3 2 380 1 3 4 7 8 TWA180EW 2 575 3 10 4 78 2 575 1 5 1 TWA240E3 2 208 230 3 33 8 239 2 208 230 1 14 4 TWA240E4 2 460 3 18 125 2 460 1 2 5 5 8 20 TWA240EK 2 380 3 24 4 145 2 380 1 3 4 7 8 TWA240EW 2 575 3 13 7 80 2 575 1 2 5 1 Table 6 Unit wiring heat pumps 60 Hz Tons Unit Model Number Unit Operating Minimum Circuit REA i 9 9 Voltage Range Ampacity Breaker Size TWA073D3 187 253 31 1 40 TWA073D4 414 506 14 9 20 TWA073DK 342 418 16 8 20 TWA073DW 518 632 11 6 15 TWA090D3 187 253 34 4 45 TWA090D4 414 506 17 9 25 n TWAO90DK 342 418 20 6 25 TWA090DW 518 632 14 7 20 TWA120D3 187 253 42 6 60 TWA120D4 414 506 23 4 30 amp TWA120DK 342 418 33 9 45
59. ooling Figure 21 TWA073D Heating TWAO061D Charging Curve Cooling Mode TWAO073D Charging Curve Heating Mode 650 450 625 425 SCH Remove 75 F Return Air 575 220 charge 550 es 375 65 F Retum Air z Remove 350 g 475 charge 325 55 F Return Air 450 2 2 amp 300 425 x p 400 2 2751 375 5 5 2 Add a 250 2 350 a charge 8 Add 325 225 charge 300 200 275 250 175 225 150 200 0 5 10 15 20 25 30 35 40 45 50 55 6 65 70 75 80 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Liquid Temperature Leaving OD Coil F Ambient Temperature F Figure 19 TWAO061D Heating Figure 22 TWAO076D Cooling TWA076D Charging Curve Cooling Mode TWAO061D Charging Curve Heating Mode 650 450 C26 425 600 200 Remove 75 F Retum Air 575 charge 550 375 T 525 2 65 Retum Air 2 Remove amp 350 amp 500 charge S S 475 9 325 55 F Retum Air 450 300 425 9 400 B 275 8 375 5 zen 350 Add a a charge
60. orthe recommended troubleshooting procedure Cooling Failure 1 Cooling and heating set point slide pot on the zone sensor has failed Refer to the Programmable amp Digital Zone Sensor Test p 41 2 Zone temperature thermistor ZTEMP on ZTS failed Refer to the Programmable amp Digital Zone Sensor Test p 41 3 CC1 or CC2 24 VAC control circuit has opened check CC1 amp CC2 coils and any of the controls below that apply to the unit HPC1 HPC2 DTL1 DTL2 4 LPC1 has opened during the 3 minute minimum on time during 4 consecutive compressor starts check LPC1 or LPC2 by testing voltage between the J1 8 amp J3 2 terminals on the RTRM and ground If 24 VAC is present the LPCs have not tripped If no voltage is present LPCs have tripped Simultaneous Heat and Cool Failure WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is 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 e Emergency Stop is activated Method 2 The second method for determining system status is done by checking voltage readings at the RTRM J6 The system indication descriptions and the approximate voltages are listed below System Failure
61. rably through a schrader valve into the suction line to the compressor only while the compressor is running e Check and adjust superheat using Table 9 p 29 then re check charging charts to determine if charge corrections are necessary Equipment Damage Never charge liquid refrigerant into the suction line of the unit with the compressor off Figure 11 Outdoor units refrigerant piping GAS LINE GAUGE PORT GAS LINE SERVICE VALVE LIGUID LINE GAUGE PORT LIQUID LINE SERVICE VALVE MANIFOLD GAUGES SSP SVX14C EN Installation Table 4 Estimated charge levels at ARI rated line lengths 25 feet Refrigerant Charge Per Circuit Liquid Line Vapor Line Matched Set Circuit 1 Circuit 2 Diameter Diameter TWA061D w TWE076D 20 4 NA 0 5 1 2 1 125 1 1 8 TWAO073D w TWEO090D 20 4 NA 0 5 1 2 1 125 1 1 8 TWAO076D w TWE076D 20 6 NA 0 625 5 8 1 375 1 3 8 TWAO090D w TWEO90D 20 6 NA 0 625 5 8 1 375 1 3 8 TWA101D w TWE101D 27 9 NA 0 5 1 2 1 375 1 3 8 TWA120D w TWE120D 27 9 NA 0 5 1 2 1 375 1 3 8 TWA156E w TWE156E 22 9 24 2 0 5 1 2 1 375 1 3 8 TWA180E w TWE180E 22 9 24 2 0 5 1 2 1 375 1 3 8 TWA201E w TWE201E 23 5 23 5 0 625 5 8 1 375 1 3 8 TWA240E w TWE240E 23 5 23 5 0 625 5 8 1 375 1 3 8 TWA061D and TWAO073D need a reducer for vapor line 1 375 to 1 125 1 3 8 to 1 1 8 Liquid Charging T
62. roduced during the defrost cycle Avoid locating the unit where snow tends to drift Snow accumulations must be removed from around the unit immediately to prevent drastic efficiency reduction A snow drift barrier may be constructed around the unit to prevent snow blockage Clearance between the snow barrier and the unit must comply with the clearances given in Dimensional Data drawings p 10 Dimensional Data Figure2 Height width and depth measurements TWA061 073 076 090 H in mm W in mm D in mm 39 125 993 8 42 125 1070 36 914 4 TWA101 120 39 125 993 8 52 125 1324 40 1016 TWA156 180 201 240 45 125 1146 1 52 125 1324 40 1016 SSP SVX14C EN Dimensional Data Figure 3 5 6 6 25 75 ton heat pump single compressor SEE NOTE 3 SERVICE PANEL SEE NOTE 4 SERVICE CLEARANCE 48 1219 2 SEE NOTE 2 FOR CLEARANCE HAIL GUARD OPTIONAL LINE VOLTAGE CONTROL WIRING i P 5578 LOE 8 5 16 211 1 36 3 8 923 9 29 13 16 757 2 271 5 143 LIQUID LINE SUCTION LINE SSP SVX14C EN 1 16 1 6 NOTES 1 ACCESS OPENING IS FOR FIELD INSTALLED BAYLOAM ACCESSORY 2 MINIMUM CLEARANCE FOR PROPER OPERATION IS 36 914 4 FROM WALLS SHRUBBERY PRIVACY FENCES ETC MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72 1828 8 RECOMMENDED SERVICE CLEARANCE 48 1219 2 3
63. s see Weights p 14 The unit should be elevated on a level field fabricated four inch steel or wood 4 x 4 mounting frame Complete the frame and secure it into position before lifting the unit to the roof The mounting frame must support a minimum of three of the unit s four sides and should span roof supports to distribute the load on the roof Figure 1 Roof mounted unit Outdoor Unit Gas Suction Line Insulated Liquid Line Ges Insulated 6 Unit Mounting Radius Channels Elevation Mounting Frame 7 7 Z 222222224 7 RoofTrussing SSP SVX14C EN Pre Installation Ground Level Mounting For ground level installation the unit base should be adequately supported and hold the unit near level The installation must meet the guidelines set forth in local codes The support should extend two inches beyond the unit base channels at all points The unit and support must be isolated from any adjacent structure to prevent possible noise or vibration problems Any ground level location must comply with required clearances given in the unit dimensional drawings see Dimensional Data p 10 Snow Belt Recommendations In regions where deep snow is encountered raise the unit a minimum distance of 8 to 12 inches above the mounting surface This will reduce the risk of snow blocking the coil and improves runoff of water p
64. s for leaks Inspect the condenser coils for dirt and debris If the coils appear dirty clean them Coil Cleaning Regular coil maintenance including annual cleaning enhances the unit s operating efficiency by minimizing compressor head pressure and amperage draw water carryover e fan brake horsepower e static pressure losses At least once each year or more often if the unit is located in a dirty environment clean the coil using the instructions outlined below Be sure to follow these instructions as closely as possible to avoid damaging the coils To clean refrigerant coils use a soft brush and a sprayer Contact your local Parts Center for appropriate detergents 1 Remove enough panels from the unit to gain safe access to coil Straighten any bent coil fins with a fin comb 3 Remove loose dirt and debris from both sides of the coil with a soft brush 4 Mixthe detergent with water according to the manufacturer s instructions If desired heat the solution to 150 F maximum to improve its cleansing capability Pour the cleaning solution into the sprayer Spray the leaving airflow side of the coil first then spray the opposite side of the coil Allow the cleaning solution to stand on the coil for five minutes Rinse both sides of the coil with cool clean water Inspect both sides of the coil if it still appears to be dirty repeat Step 7 and 8 9 Reinstall all of the compon
65. sed to alert against unsafe practices Indicates a situation that could result in NOTICE equipment or property damage only accidents 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 Important 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 2014 Trane All rights reserved A
66. t application of heat may generate excessive pressure in the unit and result in damage to the coil or expansion valve 1 Remove both seal caps from the indoor unit connection stubs NOTICE Unit Damage Do not remove the seal caps from refrigerant connections or open the service valves until prepared to braze refrigerant lines to the connections Due to the high hygroscopic properties of the R 410A oil excessive exposure to atmosphere will allow moisture to contaminate the system damaging the compressor 2 Turn on nitrogen supply Nitrogen enters through the liquid line gauge port w Braze the liquid line connections Open the gauge port on the suction line and then braze the suction line to the connection stub Nitrogen will bleed out the open gauge port on the suction line 5 Shut off nitrogen supply Leak Check WARNING Hazard of Explosion Failure to follow these recommendations could result in death or serious injury or equipment or property only damage Use only dry nitrogen with a pressure regulator for pressurizing unit Do not use acetylene oxygen or compressed air or mixtures containing them for pressure testing Do not use mixtures of a hydrogen containing refrigerant and air above atmospheric pressure for pressure testing as they may become flammable and could result in an explosion Refrigerant when used as a trace gas should only be mixed with dry nitrogen for pr
67. tem turns ON the mechanical heat compressors to perform heating Dual circuit heat pumps are factory configured to have 2 step mechanical heating enabled RTRM J4 3 tied to ground The staging sequence depends on the type of mechanical heating that is enabled e f 1 Step mechanical heating is enabled RTRM J4 3 not tied to ground the unit will stage according to Table 12 p 35 as a result of the proportional integral control algorithms e Units with 2 step mechanical heating will stage according to Table 13 p 35 as a result of the proportional integral control algorithms With mechanical heating when a heat request is turned ON the Indoor Fan request is turned ON When the heat request is turned OFF the Indoor Fan request is turned OFF after a specified delay 60 seconds on all dual compressor units and 80 seconds on all single compressor units See Table 10 p 34 Table 11 p 35 Table 12 p 35 and Table 13 p 35 in this document for the staging sequence and control Auxiliary Heat Auxiliary Heat is factory disabled on all Odyssey units Jumper placed between J2 1 and J2 2 RTRM inputs If configured Jumper wire cut or removed between J2 1 and J2 2 on RTRM and installed Auxiliary Heat is enabled or disabled by Smart Recovery SSP SVX14C EN Smart Recovery Smart Recovery dictates that if the Active Zone Temperature is making a recovery using only mechanical heating toward the setpoint at a rate of at
68. th lead lag enabled with lead lag enabled continued Heating Request Circuit Output Heating Request Circuit Output 0 None All Off 0 None All Off 1 Circuit 1 1 Circuit 2 Circuit 1 2 Circuit 2 Circuit 1 2 Circuit 1 Circuit 2 3 Auxiliary Heat 1 3 Auxiliary Heat 1 4 Auxiliary Heat 2 4 Auxiliary Heat 2 Table 12 Heat pump control 1 step mechanical heating Active Unit Auxiliary Auxiliary Switchover Switchover Mode Stage IndoorFan Compressor Heat 1 Heat 2 Valve 1 Valve 2 2 Heat Off Off Off Off Off Off Off Off Both Heat Stage 1 On Compressors Off Off Off Off Both Heat Auxiliary 1 On Compressors On Off Off Off n Both Heat Auxiliary 2 On Compressors On On Off Off Stage 1 On Off On Off Off Off eat Emergency Stage 2 On Off On On Off Off Heat Both Heat Defrost On Compressors On Off On b On b Cool Don t Care Off Off Off Off On On Only units configured as an independent circuit heat pump will control the switchover valve 2 output b On units with independent circuits only the circuit whose conditions are correct for defrost will enter defrost mode and energize the switchover valve The other circuit s switchover valve will remain in its previous state until it has a defrost request or until the unit mode changes Table 13 Heat pump control 2 step mechanical heating Active Unit Auxiliary
69. the discharge temperature exceeds the DTL setting Once the discharge temperature has returned to normal the compressor will cycle back on Evaporator Defrost Control EDC This control is located in the Air Handler The control s sensing tube is embedded vertically in the evaporator coil near the center This device will stop the compressor if the indoor coil temperature drops below its setting The indoor air will still circulate across the coil bringing the temperature of the coil back up to the cut in temperature of the evaporator defrost control Low Pressure Cut Out LPCO This control s sensor is located in the suction gas line near the compressor This control will stop the compressor and the outdoor fans if suction pressure drops below the Low Pressure Cut Out setting Once the suction pressure has returned to normal the compressor and outdoor fans will cycle back on SSP SVX14C EN High Pressure Cut Out HPCO This control s sensor is located in the discharge line This device will shut off the compressor and the outdoor fan s if the discharge pressure exceeds the High Pressure Cut Out s setting Once the discharge pressure has returned to normal the compressor will cycle back on A WARNING Prevent Injury Due to agency safety requirements no schrader core is to be installed beneath the HPCO Removal of the HPCO without evacuating the system charge could cause injury and release of refrigerant Int
70. the unit is configured with a zone sensor switchover valve 1 SOV1 and switchover valve 2 SOV2 are energized for the duration of the Cooling mode and do not change states until the unit either enters OFF mode or transitions to Heat mode If the unit is controlled with a thermostat SOV1 and SOV2 are energized while the thermostat W1 O signal output to the RTRM is active The outdoor fans ODF will turn ON and OFF with the compressors Circuit 1 fan cycles with compressor 1 and circuit 2 fan will cycle with compressor If a compressor is turned OFF the anti short cycle timer ASC will hold the compressor OFF for 3 minutes See Table 10 p 34 Table 11 p 35 Table 12 p 35 and Table 13 p 35 for the staging sequence and control Demand Defrost When power is first applied to the unit the first demand defrost cycle will be initiated based on a cumulative run time of exactly 30 minutes only at the required conditions The cumulative run time at the required conditions is tracked separately for each compressor Shortly after completion of the first defrost cycle the system control calculates the temperature difference between the outdoor coil and outdoor air using the result as an indicator of unit performance at dry coil conditions Conditions Triggering the Defrost Cycle Over time as moisture and frost accumulate on the coil the coil temperature will drop increasing the temperature difference When the temperature di
71. trademarks of their respective owners Revision History Removed warranty chapter updated with running edits Table of Contents Model Number Description 6 Heat Pump Condenser 6 General Information 7 Unit Description 7 Pre Installation 8 Unit Inspection 8 Inspection Checklist 8 Testing for Leaks 8 Lifting Recommendations 8 8 Unit Mounting 9 Structural Preparation 9 Rooftop Mounting 9 Ground Level Mounting 9 Snow Belt Recommendations 9 Dimensional Data 10 Weights uli en 14 Heat Pump Condenser 14 Installation u u p e eee a kau 15 Refrigerant Piping Guidelines 15 Refrigerant Piping Procedures Outdoor Units Pe hoes cleat clone Gam haqe eto ties 16 Refrigerant Piping Procedures Indoor LJ olt dto nad ette ere 17 Leak Check 17 System Evacuation 17 Insulating and Isolating Refrigerant Biet 18 Refrigerant Charging Procedure 18 Liquid Charging 19 Electrical Wiring 20 Unit Power Supply
72. viding power supply to the unit installing the system indoor thermostat and providing low voltage system interconnecting wiring Access to electrical connection locations is shown in Dimensional Data p 10 Determine proper wire sizes and unit protective fusing requirements by referring to the unit nameplate and or the unit Service Facts Field wiring diagrams for accessories are shipped with the accessory Unit Power Supply The installer must provide line voltage circuit s to the unit main power terminals as shown by the unit wiring diagrams available through e Library or by contacting a local sales office or field wiring Power supply must include a disconnect switch in a location convenient to the unit Ground the unit according to local codes and provide flexible conduit if codes require and or if vibration transmission may cause noise problems Important All wiring must comply with applicable local and national NEC codes Type and location of disconnect switches must comply with all applicable codes A WARNING Proper Field Wiring and Grounding Required Failure to follow code could result in death or serious injury 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
73. wer until a later date the crankcase heater should be energized for a minimum of 8 hours prior to powering the compressor s A WARNING Hazardous Voltage w Capacitors Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury 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 For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged For additional information regarding the safe discharge of capacitors see PROD SVBO6A EN 5 Remove the charging system from the unit 6 Replace all panels 19 Installation Electrical Wiring A WARNING Proper Field Wiring and Grounding Required Failure to follow code could result in death or serious injury 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 Field wiring consists of pro
74. you are not able to turn the fan on the ZSM is defective RLCI Loss of Communications If the RLCI 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 component required for the Default Mode to operate 41 Maintenance WARNING Hazardous Voltage w Capacitors Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury 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 For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged For additional information regarding the safe discharge of capacitors see PROD SVBO6A EN NOTICE Operating Under Vacuum Do not operate or apply power to the compressor while under a vacuum Failure to follow these instructions will result in compressor failure Perform all of the indicated

Trane Odyssey 6 to 25 Tons Installation and Maintenance Manual

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