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Trane Axiom EXW Series Nstallation, Operation And Maintenance Manual
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Trane Axiom EXW Series Nstallation, Operation And Maintenance Manual

Trane Axiom EXW Series Nstallation, Operation And Maintenance Manual

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Installation, Operation, and Maintenance
Water Source Heat Pump
Axiom™ Water-to-Water – EXW
5 to 20 Tons – 60 Hz
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.
February 2025
SAFETY WARNING
WSHP-SVX023B-EN

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Summary of Contents for Trane Axiom EXW Series

  • Page 1 Installation, Operation, and Maintenance Water Source Heat Pump Axiom™ Water-to-Water – EXW 5 to 20 Tons – 60 Hz 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.
  • Page 2 (HCFCs). Not all refrigerants containing these compounds bump cap, fall protection, electrical PPE and arc have the same potential impact to the environment. Trane flash clothing). ALWAYS refer to appropriate advocates the responsible handling of all refrigerants.
  • Page 3 Follow EHS Policies! This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in Failure to follow instructions below could result in part without written permission. Trane reserves the right to death or serious injury.
  • Page 4 Table of Contents General Information ......5 Unit Placement ......18 Jobsite Inspection .
  • Page 5 General Information WARNING • Verify that the refrigerant charge has been retained during shipment by use of gauges. Access fittings are Fiberglass Wool! located internal to the cabinet on the 5-ton through Exposure to glass wool fibers without all necessary 20-ton equipment.
  • Page 6 Troubleshooting and connection diagrams for the equipment may be located in the back of this manual. Note: *Value may vary. See performance tables for more details. Deluxe 24V Controls The Deluxe 24V control design will incorporate a microprocessor-based control board. The Trane WSHP-SVX023B-EN...
  • Page 7 Model Number Description Digit 1, 2, 3 — Unit Configuration EXW = Water to Water Heat Pump Digit 4 — Development Sequence K = R-454B Digit 5, 6, 7 — Nominal Size (Tons) 060 = 5 Tons 120 = 10 Tons 240 = 20 Tons Digit 8 —...
  • Page 8 Dimensions and Clearances WARNING enough space for service personnel to perform maintenance or repair. Provide sufficient room to make Improper Unit Lift! water, and electrical connection(s). Local and national Failure to properly lift unit in a LEVEL position could codes should be followed in providing electrical power result in unit dropping and possibly crushing connections.
  • Page 9 Dimensions and Clearances Figure 2. EXW*060 SOURCE SIDE HEAT EXCHANGER LOAD SIDE HEAT EXCHANGER [17] [508] CONTROL BOX [1016] ISO VIEW TOP VIEW CONTROL BOX ACCESS HIGH VOLTAGE Ø1 1/8 [28.6] [559] 24 VOLT Ø7/8 [22.2] 10 1/8 [257] 4 1/8 [105] 2 3/8 [25]...
  • Page 10 Dimensions and Clearances Figure 3. EXW*120 SOURCE SIDE HEAT EXCHANGER WATER OUT WATER OUT LOAD SIDE HEAT EXCHANGER WATER IN WATER IN [50.8] [50.8] [25.4] [25.4] [838.2] CONTROL BOX [1473.1] ISO VIEW TOP VIEW CONTROL BOX ACCESS 24 VOLT Ø7/8 [22.2] [610] HIGH VOLTAGE Ø1 1/8 [28.6]...
  • Page 11 Dimensions and Clearances Figure 4. EXW*240 SOURCE SIDE LOAD SIDE HEAT EXCHANGER HEAT EXCHANGER 3 1/8 [78.0] 1 1/4 [30.4] 31 3/8 [797.0] CONTROL BOX 81 1/2 [2069.9] ISO VIEW TOP VIEW CONTROL BOX ACCESS HIGH VOLTAGE Ø1 1/8 [28.6] 24 VOLT [762.0] 21 3/4...
  • Page 12 At all times, Trane’s maintenance and service guidelines • Do not puncture refrigerant tubing. shall be followed. If in doubt, contact Trane technical • Dispose of properly in accordance with federal support for assistance. or local regulations.
  • Page 13 • Verify continuity of earth bonding. flame to open circuit. • Replace electrical components with Trane replacement 6. Open the circuit. parts, or those meeting the same ratings and qualified Prior to refrigerant removal, open all appropriate valves, for flame arrest protection, UL LZGH2 category.
  • Page 14 A2L Information and Installation Requirements The outlet for the vacuum pump shall not be close to any 4. Pump down refrigerant system, if possible. potential ignition sources, and ventilation shall be available. 5. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the Refrigerant Charging system.
  • Page 15 Figure 6. Minimum airflow volume and exhaust room area for mechanical ventilation- 20 ton Lit Number Table Title Brand WSHP-SVX023A-EN Minimum opening area for natural ventilation - 20 ton Trane Airflow Volume Exhaust Room Area n Mark 0.11 Installation room area (m...
  • Page 16 A2L Information and Installation Requirements Table 3. Minimum room area 5 to 20 tons Minimum Room Area (m Minimum Room Area (ft Models EXWK060 27.9 300.0 EXWK120 29.2 314.3 EXWK240 169.2 1821.3 Minimum Room Area (A ) Adjustments Multiply the altitude adjustment factor in the table below by listed on the unit nameplate or in the Installation, Use equation below to adjust the minimum room area, as Operation, and Maintenance (IOM) manual.
  • Page 17 A2L Information and Installation Requirements • When makeup air is supplied from the same space separated by a sufficient distance (not less than 3 m) where the ventilation air extracted from the space is from the makeup air intake openings to prevent re- discharged, ventilation air discharge openings shall be circulation to the space.
  • Page 18 Installation General Installation Checks Low Voltage Wiring Requirements Connect properly sized control wiring to the proper The checklist below is a summary of the steps required to termination points between the field supplied thermostat successfully install a unit. This checklist is intended to and the terminal strip located in the equipment control box.
  • Page 19 Installation Figure 7. Water connection Cleaning and Flushing the Water may have occurred due to increased heat. Repair as required. Loop 5. Open the system at the lowest point for the initial blow After the piping system is complete, the flexible hose down (making sure the make up water is equal to the connectors should be doubled back to complete the water water being dumped).
  • Page 20 Installation Figure 8. Flushing water loop Table 5. Antifreeze requirements based on volume CONNECTION Minimum Temperature for Freeze Protection Type of HOSE Antifreeze 10°F 15°F 20°F 25°F 30°F CIRCULATING Methanol PUMP Propylene – – – – Glycol Cleaning and Flushing the Water Loop All installations must be thoroughly flushed to remove air and dirt from the earth loop before running the system.
  • Page 21 Installation NOTICE Figure 10. Field connections - low voltage terminal board - EXW*060 Use Copper Conductors Only! Failure to use copper conductors could result in EXW*060 equipment damage as the equipment was not designed or qualified to accept other types of 1TB2 conductors.
  • Page 22 Installation Table 7. 24V AC conductors Distance from unit to control Recommended wire size 18 gauge 000 to 460 ft. 16 gauge 461 to 732 ft. 14 gauge 733 to 1000 ft. Table 8. Deluxe controller diagnostic LEDs Color: Green Color: Red Controller Mode LED1...
  • Page 23 Pre-Start Pre-Start-Up Checklist ☐ Is vibration isolation provided? (i.e. unit isolation pad, hose kits) Before energizing the unit, the following system devices ☐ Is unit serviceable? (Refer to clearance specifications must be checked: on Dimensions and Clearances chapter.) ☐ Is the high voltage power supply correct and in ☐...
  • Page 24 Unit Start-Up Start-up with the system controls is included below: 6. Leave unit off for approximately FIVE minutes to allow for pressure equalization. 1. Set the system control to the cooling mode of operation. 7. Set system control to the heating mode of operation. 2.
  • Page 25 Operating Data Table 9. Operating data for cooling EXW*060 Compressor Source Load Suction Discharge Unit Model Water Temp Water Temp EWT °F Flow GPM WPD FT EWT °F Flow GPM WPD FT Pressure Pressure Drop °F Rise °F PSIG PSIG 12-14 10-13 88-108...
  • Page 26 Operating Data Table 10. Operating data for heating EXW*060 Compressor Source Load Suction Discharge Unit Model Water Temp Water Temp Pressure Pressure EWT °F Flow GPM WPD FT EWT °F Flow GPM WPD FT Drop °F Rise °F PSIG PSIG 9-11 67-81 233-285...
  • Page 27 Operating Data Table 11. Operating data for cooling EXW*120 Compressor Source Load Suction Discharge Unit Model Water Temp Water Temp EWT °F Flow GPM WPD FT EWT °F Flow GPM WPD FT Pressure Pressure Drop °F Rise °F PSIG PSIG 12-15 11-13 94-115...
  • Page 28 Operating Data Table 12. Operating data for heating EXW*120 Compressor Source Load Suction Discharge Unit Model Water Temp Water Temp Pressure Pressure EWT °F Flow GPM WPD FT EWT °F Flow GPM WPD FT Drop °F Rise °F PSIG PSIG 8-10 65-79 243-297...
  • Page 29 Operating Data Table 13. Operating data for cooling EXW*240 Compressor Source Load Suction Discharge Unit Model Water Temp Water Temp EWT °F Flow GPM WPD FT EWT °F Flow GPM WPD FT Pressure Pressure Drop°F Rise °F PSIG PSIG 12-15 11-13 89-109 177-217...
  • Page 30 Operating Data Table 14. Operating data for heating EXW*240 Compressor Source Load Suction Discharge Unit Model Water Temp Water Temp Pressure Pressure EWT °F Flow GPM WPD FT EWT °F Flow GPM WPD FT Drop °F Rise °F PSIG PSIG 8-10 60-73 240-294...
  • Page 31 Operating Data Table 15. Water volume Water Volume Gallons (U.S) Unit Size Water Volume Cubic Inches Water Volume Cubic Feet EXW*060 359.6 0.21 1.57 EXW*120 719.2 0.42 3.14 EXW*240 2079.0 1.20 8.98 Note: The above water volume is the total unit water volume (Source + Load), divide the above volume by 2 to obtain source or load side volumes individually. Flow Checks Pressure Using the P/T ports and one 0-60 psi pressure gauge with...
  • Page 32 Maintenance Preventive Maintenance WARNING Hazardous Chemicals! Maintenance on the unit is simplified with the following preventive suggestions: Failure to follow this safety precaution could result in death or serious injury. Coil cleaning agents can be WARNING either acidic or highly alkaline and can burn severely Hazardous Voltage! if contact with skin or eyes occurs.
  • Page 33 Troubleshooting WARNING • Verify that the unit is receiving electric supply power. • Ensure that the fuses in the fused disconnect (field Hazardous Service Procedures! installed) are intact. Failure to follow all precautions in this manual and on After completing the preliminary checks, inspect the unit for the tags, stickers, and labels could result in death or other obvious problems such as leaking connection, serious injury.
  • Page 34 Troubleshooting Table 17. Troubleshooting checklist (continued) Heating Cooling Problem Cause Correction Inadequate GPM – Increase water flow to unit Decrease temperature – Water too hot High pressure switch open Overcharged with refrigerant Decrease charge Defective pressure switch Check or replace Trash in heat exchanger Backflush –...
  • Page 35 INPUT. TERMINAL 1TB2-7 AND 1TB2-8 AND/OR DASHED DEVICE OUTLINES INDICATE COMPONENTS PROVIDED BY THE FIELD. SOLID LINES INDICATE WIRING BY THE TRANE CO. ISOLATED GENERAL ALARM CONTACTS. CONTACTS CLOSE WHEN CONTROL 1U1 AND 1U2 GOES INTO MANUAL LOCKOUT MODE. NUMBERS ALONG THE LEFT SIDE OF THE CONTACTS RATED FOR CLASS 2 24V.
  • Page 36 INPUT. TERMINAL 1TB2-7 AND 1TB2-8 AND/OR DASHED DEVICE OUTLINES INDICATE COMPONENTS PROVIDED BY THE FIELD. SOLID LINES INDICATE WIRING BY THE TRANE CO. ISOLATED GENERAL ALARM CONTACTS. CONTACTS CLOSE WHEN CONTROL 1U1 AND 1U2 GOES INTO MANUAL LOCKOUT MODE. NUMBERS ALONG THE LEFT SIDE OF THE CONTACTS RATED FOR CLASS 2 24V.
  • Page 37 The time starts at the end of standard 1-year to exceed 18-months from shipment. There is a standard coverage through the fifth year. 5-year compressor warranty. These extended warranties apply only to new equipment installed in domestic Trane sales territories and must be ordered prior to start-up. WSHP-SVX023B-EN...
  • Page 38 Notes WSHP-SVX023B-EN...
  • Page 39 Notes WSHP-SVX023B-EN...
  • Page 40 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

This manual is also suitable for:

Axiom exw 060 seriesAxiom exw 120 seriesAxiom exw 240 seriesAxiom exwk060Axiom exwk1204Axiom exwk240