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Trane Axiom GWS Series Installation, Operation And Maintenance Manual

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Installation, Operation,
and Maintenance
Water Source Heat Pump Axiom™ ™ Rooftop - GWS*
3 to 20 Tons - 60 Hz
M M o o d d e e l l N N u u m m b b e e r r s s
GWSC036-120
GWS*150–240
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.
March 2019
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
W W S S H H P P - - S S V V X X 0 0 1 1 5 5 C C - - E E N N

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  • Page 1 Installation, Operation, and Maintenance Water Source Heat Pump Axiom™ ™ Rooftop - GWS* 3 to 20 Tons - 60 Hz M M o o d d e e l l N N u u m m b b e e r r s s GWSC036-120 GWS*150–240 S S A A F F E E T T Y Y W W A A R R N N I I N N G G...
  • Page 2 A A L L W W A A Y Y S S r r e e f f e e r r t t o o a a p p p p r r o o p p r r i i a a t t e e M M a a t t e e r r i i a a l l S S a a f f e e t t y y impact to the environment. Trane advocates the...

  • Page 3: Revision History

    This document and the information in it are the property of Trane, and may not be used or reproduced F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n in whole or in part without written permission.

  • Page 4: Table Of Contents

    (BAYSENS050) ..... . 13 RTCI – ReliaTel™ Trane Thermostat (BAYSTAT150) ... 13 Communication Interface Thermostat (BAYSTAT151) .
  • Page 5 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Main Electrical Power Air-Fi® Wireless Communication Requirements ..... . . 38 Interface (WCI) –...
  • Page 6 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Final Process ......68 Test 2: Cooling Set Point (CSP) and Heating Set Point (HSP).

  • Page 7: Model Number Description

    Barometric Relief Digit 4 — Airflow Configuration 0 = No Communications Interface H = Economizer, Comparative Enthalpy with 1 = Trane® Communications Interface Barometric Relief C = Convertible 2 = LonTalk® Communications Interface K = Low Leak Economizer Barometric Relief D = Downflow 6 = BACnet®...
  • Page 8 Standard filters are not available with Low Leak Economizers. Through-the-base electrical option or Horizontal-Side Access must be ordered with either unit mounted disconnect or circuit breaker. When adding heat, you must order Trane Electric Heat. Unit mounted disconnect and circuit breakers are mutually exclusive of each other.

  • Page 9: General Information

    General Information Overview of Manual W W A A R R N N I I N N G G F F i i b b e e r r g g l l a a s s s s W W o o o o l l ! ! N N o o t t e e : : One copy of this document ships inside the control panel of each unit and is customer E E x x p p o o s s i i t t i i o o n n t t o o g g l l a a s s s s w w o o o o l l f f i i b b e e r r s s w w i i t t h h o o u u t t a a l l l l...

  • Page 10: Return Air Smoke Detector 3 To

    (WCI) allows for wireless communication between Economizer Control Actuator system controls, unit controls, and wireless sensors for Trane control products that use BACnet protocol. The The ECA monitors the mixed air temperature, return air WCI replaces the need for communications wire in all temperature, minimum position setpoint (local or system applications.

  • Page 11: Switch (Optional)

    G G e e n n e e r r a a l l I I n n f f o o r r m m a a t t i i o o n n Compressor Disable (CPR1/2) The descriptions of the following basic Input Devices used within the RTRM network are to acquaint the This input incorporates the low pressure control (LPC) operator with their function as they interface with the...

  • Page 12: Evaporator Frost Control

    It is used with a Trane Integrated Periodic checks and maintenance procedures must be Comfort™ building management system. performed on the smoke detector to insure that it will function properly.

  • Page 13: Thermostat (Baystat150)

    G G e e n n e e r r a a l l I I n n f f o o r r m m a a t t i i o o n n Remote Zone Sensor (BAYSENS075*) Thermostat (BAYSTAT155) This electronic sensor can be used with BAYSENS106*, This thermostat is a multi-stage 3 heat/2 cool, auto...

  • Page 14: Unit Dimensions

    Unit Dimensions Figure 1. Typical installation clearances for single & multiple unit applications GWSC036-048* Units GWSC060-120* Units WSHP-SVX015C-EN...
  • Page 15 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 2. WSHP rooftop- 3 tons N N o o t t e e : : 2” electrical connection: single point power when heat installed (GWS) 69 7/8"...
  • Page 16 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 3. WSHP rooftop - 4 tons 69 7/8" 3 5/8" 15 1/2" 8 1/2"...
  • Page 17 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 4. WSHP rooftop - 3 to 4 tons - unit clearance Figure 7.
  • Page 18 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 9. WSHP rooftop - 3 to 4 tons - swing diameter for hinged door(s) option 16"...
  • Page 19 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 10. WSHP rooftop - 5 tons N N o o t t e e : : 2” electrical connection: single point power when heat installed (GWS) 88 5/8"...
  • Page 20 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 11. WSHP rooftop - 6 tons N N o o t t e e : : 2” electrical connection: single point power when heat installed (GWS) FILTER SIZE BASE HOLE FOR 88 5/8"...
  • Page 21 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 12. WSHP rooftop - 7.5 tons standard efficiency N N o o t t e e : : 2” electrical connections: single point power when electric heat installed. FILTER SIZE BASE HOLE FOR 88 5/8"...
  • Page 22 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 13. WSHP rooftop- 10 tons standard efficiency N N o o t t e e : : 2” electrical connections: single point power when electric heat installed. BASE HOLE FOR 88 5/8"...
  • Page 23 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 14. WSHP rooftop- 5 to 10 tons - unit clearance Figure 17. WSHP rooftop- 5 to 10 tons - power and roof opening exhaust CLEARANCE...
  • Page 24 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 19. WSHP rooftop- 5 to 10 tons - swing diameter for hinged door(s) option 17"...
  • Page 25 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 20. WSHP rooftop models - 12.5 to 15 tons 22 1/4" 28 1/2"...
  • Page 26 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 21. WSHP rooftop models - 12.5 to 20 tons * All dimensions are in inches/millimeters. Figure 22.
  • Page 27 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 24. WSHP rooftop models - 12.5 to 15 tons *All dimensions are in inches/millimeters. WSHP-SVX015C-EN...
  • Page 28 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 25. WSHP rooftop models - 20 tons 22 1/4" 28 1/2" 31"...
  • Page 29 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 26. WSHP rooftop models - 20 tons *All dimensions are in inches/millimeters. Figure 27.
  • Page 30 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Figure 29. Downflow & horizontal condensate locations Table 1. Unit dimensions Condensate Drain Locations Conden- sate Downflow Only...
  • Page 31 U U n n i i t t D D i i m m e e n n s s i i o o n n s s Table 2. Swing clearances Unit Model # 42 3/8 48 3/8 GWSD150-180 29 1/2 38 1/2 18 1/2...

  • Page 32: Unit Weights

    Unit Weights Table 3. Typical unit weights and point loading data Net Weight Corner Weights (lbs) Center of Gravity (in.) Tons Model # Length Width GWSC036H GWSC048H GWSC060H GWSC072H GWSC092H GWSC120H 12.5 GWS*150E 2024 GWS*180E 2028 GWS*240E 2198 Weights are approximate. Corner weights are given for information only.
  • Page 33 U U n n i i t t W W e e i i g g h h t t s s lifting hook and the top of the unit should be 7 feet. Figure 34. Rigging and center of gravity data 12.5 to 20 tons N N O O T T I I C C E E U U n n i i t t D D a a m m a a g g e e ! !

  • Page 34: Installation

    Installation Foundation Ductwork N N O O T T I I C C E E Elbows with turning vanes or splitters are recommended to minimize air noise due to turbulence W W a a t t e e r r D D a a m m a a g g e e ! ! and to reduce static pressure.

  • Page 35: General Unit Requirements

    I I n n s s t t a a l l l l a a t t i i o o n n and return air openings. Be sure to use flexible duct • Check electric heat circuits for continuity. connections at the unit.

  • Page 36: Filter Installation

    I I n n s s t t a a l l l l a a t t i i o o n n 4. Place on a level surface in the position it was N N o o t t e e : : Do not operate the unit without filters. removed from the unit.

  • Page 37: Gwsc092H, Gwsc120H

    I I n n s s t t a a l l l l a a t t i i o o n n two screws. Figure 39. Return duct cover N N o o t t e e : : Certain unit/electric heater combinations require a limit switch change out for horizontal airflow applications.

  • Page 38: Main Electrical Power

    I I n n s s t t a a l l l l a a t t i i o o n n 1 through 3 and go on to next step in the installation 3. Obtain the replacement TCO-A which is secured by process.

  • Page 39: Main Unit Power

    I I n n s s t t a a l l l l a a t t i i o o n n N N o o t t e e : : All field-installed wiring must comply with NEC that shipped with the unit for specific termination and applicable local codes.

  • Page 40: Field Installed Control Wiring

    I I n n s s t t a a l l l l a a t t i i o o n n Controls Using 24 VAC Figure 43. Through the base electrical option 12.5 to 20 tons Before installing any connecting wiring, refer to the Unit Dimensions section for the electrical access locations provided on the unit and the Electromechanical thermostat 24 Vac conductors with...
  • Page 41 I I n n s s t t a a l l l l a a t t i i o o n n 3. Do not run the electrical wires transporting DC signals in or around conduit housing high voltage wires.
  • Page 42 I I n n s s t t a a l l l l a a t t i i o o n n Figure 45. Typical field wiring diagrams for optional controls BAYSENS075* ASYSTAT669* BAYSENS107* BAYSTAT023* BAYSENS119* ASYSTAT666* BAYSENS077* ASYSTAT669* BAYSENS075* ASYSTAT669*...

  • Page 43: Space Temperature Averaging

    I I n n s s t t a a l l l l a a t t i i o o n n Figure 47. Control box 12.5 to 20 tons RTRM TEST 1 TEST 2 Space Temperature Averaging parallel.

  • Page 44: Voltage Imbalance

    I I n n s s t t a a l l l l a a t t i i o o n n Figure 48. Space temperature averaging examples Table 7. Temperature vs. resistance Table 7. Temperature vs. resistance (continued) Temperature Temperature Degrees F°...

  • Page 45: Electrical Phasing

    I I n n s s t t a a l l l l a a t t i i o o n n Measure each leg (phase-to-phase) of the power • Turn the field supplied disconnect switch that supply. Each reading must fall within the utilization provides power to the main power terminal block or range stamped on the unit nameplate.

  • Page 46: Reliatel™ Controls

    I I n n s s t t a a l l l l a a t t i i o o n n Final Steps Close the main power disconnect switch and the unit mounted disconnect switch, if applicable. Use the checklist provided below in conjunction with the checklist in General Unit Requirements, to ensure ReliaTel™...

  • Page 47: Factory-Mounted Unit Options

    Factory-Mounted Unit Options Circuit Breaker (FIYUCB) and front plate located directly under the circuit breaker panel. Unit Disconnect (FIYUDC) 2. If the conduit required for your application is larger, W W A A R R N N I I N N G G remove the termination plate and connect to the larger hole using field supplied reducing washers.

  • Page 48: Powered/Unpowered Convenience

    F F a a c c t t o o r r y y - - M M o o u u n n t t e e d d U U n n i i t t O O p p t t i i o o n n s s Powered/Unpowered W W A A R R N N I I N N G G Convenience Outlet...

  • Page 49: Unpowered Convenience Outlet Unpowered Option (Fiycoup)

    F F a a c c t t o o r r y y - - M M o o u u n n t t e e d d U U n n i i t t O O p p t t i i o o n n s s Unpowered Convenience Outlet Figure 52.

  • Page 50: Return Air Smoke Detector 12.5 To

    F F a a c c t t o o r r y y - - M M o o u u n n t t e e d d U U n n i i t t O O p p t t i i o o n n s s Smoke Detector Installation Figure 53.
  • Page 51 F F a a c c t t o o r r y y - - M M o o u u n n t t e e d d U U n n i i t t O O p p t t i i o o n n s s Figure 54.

  • Page 52: Airflow & Sampling

    F F a a c c t t o o r r y y - - M M o o u u n n t t e e d d U U n n i i t t O O p p t t i i o o n n s s 4.

  • Page 53: Air-Fi® Wireless Communication Interface (Wci) - 3 To 10 Ton Units

    If a unit is to be converted to horizontal discharge, the following conversion must be performed: When installed, the Trane Air-Fi Wireless Communication Interface is located in the evaporator 1. If the unit has an economizer, it must be pulled out section, near the return air ductwork.
  • Page 54 F F a a c c t t o o r r y y - - M M o o u u n n t t e e d d U U n n i i t t O O p p t t i i o o n n s s Figure 59.

  • Page 55: Pre-Start

    Pre-Start Test Modes across the two test terminals. The unit will remain in the specific test mode for approximately one There are three methods in which the “Test” mode can hour even though the resistance is left on the test be cycled at LTB-Test 1 and LTB-Test 2.

  • Page 56: Multi-Speed Indoor Motor

    P P r r e e - - S S t t a a r r t t temperature to within ± 2ºF of the sensor setpoint at location. Use a DC voltmeter to read the voltage the sensed location. between the two terminals.

  • Page 57: Verifying Proper Air Flow

    P P r r e e - - S S t t a a r r t t motor is factory wired to operate on speed tap 1 during With the fan operating properly, determine the total cooling. For 3 & 4 ton electric units operating in heat system airflow (CFM) by;...

  • Page 58: Start Up

    Refer to the SSA and SPA scroll compressors for R-410A units use refrigerant circuit illustration in the Service Facts. Trane OIL00094. The correct Oil for Trane CSHD is Using the Service test guide for component Trane OIL00079 or OIL00080. Compressor types are operation table, continue the Service Test start-up listed in the following table.

  • Page 59: Heating Start-Up

    S S t t a a r r t t U U p p Figure 62. Compressor terminal box compressor circuit. Momentarily jump across the Test 1 & Test 2 terminals on LTB one additional time if continuing from previous component start-up or until the desired start-up component Test is started.
  • Page 60 S S t t a a r r t t U U p p freeze solution having a freezing point 20°F lower than the minimum expected entering temperature. Table 11. GWSC036H Operating pressures in cooling/heating Operating Data Cooling Heating Entering Water Water Suction...
  • Page 61 S S t t a a r r t t U U p p Table 13. GWSC060H Operating pressures in cooling/heating Operating Data Cooling Heating Entering Water Water Suction Discharge Water Suction Discharge Water Model Air Temp Air Temp Flow GPM Temp Pressure Pressure...
  • Page 62 S S t t a a r r t t U U p p Table 15. GWSC092H Operating pressures in cooling/heating Operating Data Cooling Heating Entering Water Water Water Suction Discharge Suction Discharge Water Model Air Temp Air Temp Flow GPM Temp Pressure Pressure...
  • Page 63 S S t t a a r r t t U U p p Table 17. GWS*150 Operating pressures in cooling/heating Operating Data Cooling Heating Entering Water Water Suction Discharge Water Suction Discharge Water Model Air Temp Air Temp Flow GPM Temp Pressure Pressure...

  • Page 64: Water Volume

    S S t t a a r r t t U U p p Table 19. GWS*240 Operating pressures in cooling/heating Operating Data Cooling Heating Entering Water Water Suction Discharge Water Suction Discharge Water Model Air Temp Air Temp Flow GPM Temp Pressure Pressure...

  • Page 65: Maintenance

    Maintenance Make sure all personnel are standing clear of the unit 1. To determine the appropriate belt deflection: before proceeding. The system components will start a. Measure the center-to-center distance, in when the power is applied. inches, between the fan sheave and the motor sheave.

  • Page 66: Monthly Maintenance

    M M a a i i n n t t e e n n a a n n c c e e Table 21. Belt tension measurements and deflection forces Deflection Force (Lbs.) Super Gripbelts Gripnotch Steel Cable Gripbelts Belts Cross Small P.D Range Section Min.

  • Page 67: Heating Season

    To clean refrigerant coils, use a soft brush and a service technician must comply with all federal, sprayer. state and local laws. For evaporator coil cleaners, contact the local Trane Parts Center for appropriate detergents. Heating Season 1. Remove enough panels from the unit to gain safe •...

  • Page 68: Final Process

    M M a a i i n n t t e e n n a a n n c c e e Final Process — schematic(s) _________________________________________ For future reference, you may find it helpful to record the unit data requested below in the blanks provided. _________________________________________ 1) Complete Unit Model Number: —...

  • Page 69: Troubleshooting

    Troubleshooting W W A A R R N N I I N N G G present in Step 2, the RTRM has failed. Replace the RTRM. H H a a z z a a r r d d o o u u s s S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s ! ! 5.

  • Page 70: Failure Indication Causes

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g LED 4 (Service) Heat Failure “On” indicates a clogged filter. Measure the voltage between terminals J6-7 &...

  • Page 71: Method 2

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Zone Temperature Sensor (ZTS) Method 2 Tests To reset the system at the unit, cycle the unit power by turning the disconnect switch “Off”...

  • Page 72: Programmable & Digital Zone Sensor

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g should measure a voltage drop of 1.5 to 2.5 volts, comes on and runs continuously, the ZSM is good.

  • Page 73: Unit Economizer Control (Eca)

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g 2. Remove the Outside Air Sensor (OAS) from the Table 24. Verify economizer status by economizer actuator (ECA) LED indicator: (continued) condenser section of unit.

  • Page 74: Warranty Information

    The optional extended warranty is a second through fifth year warranty. The time starts at the end of the Trane’s parts-only warranty, running 12 months from startup, not to exceed 18-months from shipment. There standard 1 year coverage through the fifth year. These extended warranties apply only to new equipment is a standard 5-year compressor warranty.
  • Page 75 N N o o t t e e s s WSHP-SVX015C-EN...
  • Page 76 ® , Thermo King ® Trane ® — work together to enhance the quality and comfort of air in homes and buildings; transport and protect food and perishables; and increase industrial productivity and efficiency. We are a global business committed to a world of sustainable progress and enduring results.

This manual is also suitable for:

Axiom gws150–240Axiom gwsc036-120

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