Related Manuals for Trane EXWA
Summary of Contents for Trane EXWA
- Page 1 Installation Owner Diagnostics Water-to-Water Water-Source Heat Pump Models WPWD, GSWD and EXWA Models “A” and later Design Sequence WPWD – 024-072 60 HZ GSWD – 024-072 60 HZ EXWA – 60 HZ WSHP-SVX02A-EN...
- Page 2 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.
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Page 3: Table Of Contents
WSHP-SVX02A-EN Contents Installation/Startup/Commissioning Pre-installation Checklist General Information Dimensions/Weights Installation Instructions Electrical Requirements Pre-Startup Checklist Startup/Commissioning Sequence of Operation Operating Pressures Startup Checklist & Log Maintenance Warranty Information Troubleshooting Checklist Unit Wiring... -
Page 4: Installation/Startup/Commissioning
4. Store units in the normal UP orientation to maintain oil in the compressor. 5. Do not stack more than three units in total height for the WPWD/GSWD 2-ton through 6-ton configurations, and no more than two units high for the EXWA 20-ton configuration. -
Page 5: General Information
Units containing the Deluxe 24V con- trol design will incorporate a micro- processor-based control board. The Trane microprocessor board is factory wired to a terminal strip to provide all necessary terminals for field connec- tion. The deluxe board is equipped... -
Page 6: Dimensions/Weights
Table 1: Unit weights Shipping Shipping Size Weight Weight with pallet (lb) w/o pallet (lb) 1222 1156 Figure 1: Mechanical clearances Dimensions/Weights/ Clearance WARNING Improper Unit Lift! Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level. - Page 7 Dimensions WPWD/GSWD 024-036 WSHP-SVX02A-EN...
- Page 8 Dimensions WPWD/GSWD 042-072 WSHP-SVX02A-EN...
- Page 9 Dimensions EXWA 240 WSHP-SVX02A-EN...
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Page 10: Hazardous Voltage
Installation General Installation Checks The checklist below is a summary of the steps required to successfully in- stall a unit. This checklist is intended to acquaint the installing personnel with procedures required in the installation process. It does not replace the de- tailed instructions called out in the ap- plicable sections of this manual. - Page 11 Trane offers 4-types of hose kit varia- tions: • Stainless steel braided flexible hose with manual shut-off (ball) valves •...
- Page 12 Cleaning and Flushing the Water Loop After the piping system is complete, the flexible hose connectors should be doubled back to complete the water circuit external to the unit (avoiding trash settle-out in the condenser). Fig- ure 4. An extra pipe may be necessary to connect the hose kits.
- Page 13 See Figure 7. If the unit s contain a Trane loop pump module, shut-off valves are supplied by the manufacturer within the pump module assembly.
- Page 14 Water Heater Hook-up (option) Instructions for connection from the desuperheater (option) water-in/out to the domestic hot water heater may be found in WSHPC-IN-4 or 72-9006-02. This water heater kit (Figure 8) ships in all units with the desuperheater op- tion. The kit is zip tied to the compres- sor base;...
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Page 15: System Pressurization
Filling the Loop Pump Kit System Once the loop, pump module and unit are fully connected, the system will need to be filled with water or water/ antifreeze solution. See Page 14 for an- tifreeze/water mixture by volume. Fill both sides of the outside portion of the loop first via the pump module. -
Page 16: Power Wiring
Field Installed Power Wiring Power wiring to the equipment must conform to National and Local Electric Codes (NEC) by a professional electri- cian. WARNING Live Electrical Components! During installation, testing, ser- vicing and troubleshooting of this product, it may be necessary to work with live electrical compo- nents. -
Page 17: Low Voltage Wiring
Controls Using 24 VAC Before installing any wire, refer to the electrical access locations on the unit submittals located on pages 7 through Ensure that the AC control wiring be- tween the controls and the unit’s ter- mination point does not exceed three (3) ohms/conductor for the length of the run. - Page 18 Changing Freezestat or Low Pres- sure Cutout Switches (WPWD/GSWD models ONLY) Each unit has two factory installed low pressure cutout switches and one freezestat. Only one of the low pres- sure cutout switches is connected to the 24 volt control circuit, dependent on which freezestat is being used (i.e.
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Page 19: Electrical Requirements
Table E-1: Electrical performance WPWD/EXWA Model/MBH VOLTS-AC/HZ/PH Min. Util. Volt WPWD024 208-230/60/1 220-240/50/1 265/60/1 WPWD036 208-230/60/1 208-230/60/3 220-240/50/1 265/60/1 380-415/50/3 460/60/3 WPWD042 208-230/60/1 208-230/60/3 220-240/50/1 265/60/1 380-415/50/3 460/60/3 WPWD048 208-230/60/1 208-230/60/3 380-415/50/3 460/60/3 WPWD060 208-230/60/1 208-230/60/3 380-415/50/3 460/60/3 575/60/3 WPWD072... -
Page 20: Pre-Startup Checklist
Pre-Start-up Checklist Before energizing the unit, the following system devices must be checked: ____ Is the high voltage power supply correct and in accordance with the nameplate ratings? ____ Is the field wiring and circuit protection the correct size? ____ Is the low voltage control circuit wiring correct per the unit wiring diagram? ____ Is the piping system clean/complete and correct? (A recommendation of all system flushing of debris from the water- to-refrigerant heat exchanger, along with air purging from the water-to-refrigerant heat exchanger be done in accor- dance with the Closed-Loop/Ground Source Heat Pump Systems Installation Guide). -
Page 21: Initial Unit Start-Up
Initial Unit Start-up Start-up with the system controls is included below: Note: Air Handlers should not be operated in the construction phase of dry walling. The air-to-refrigerant coil will foul, and the warranty will be void. 1.Set the system control to the desired mode of operation. 2.Set the control switch to fans and circulation pumps. -
Page 22: Operating Pressures
Operating Pressures Table OP-1: Cooling mode operating pressures Unit Size Entering Load (Degree F) Suction Discharge Pressure Pressure EXWA 240 53.6 46-56 103-143 EXWA 240 61-71 111-151 Table OP-2: Heating mode operating pressures Unit Size Entering Load (Degree F) Suction... - Page 23 38.1 53.6 30.5 50.5 53.6 14.7 Water Side Volume Gallons 0.238 0.455 0.455 1.121 1.121 1.121 Note: The EXWA 240 has two circuits. 4.576 Source Load Ft. Head Ft. Head Pressure Pressure 10.8 12.2 12.1 16.2 11.0 13.3 14.0 21.9 14.0...
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Page 24: Serial Number
Installing Contractor: Use this form to thoroughly check-out the system and units before and during start-up. (This form need not be returned to the factory unless requested during technical service support). Job Name: Model Number: Date: Serial Number: In order to minimize troubleshooting and costly system failures, complete the following checks and data entries before the system is put into full operation. -
Page 25: Maintenance
WSHP-SVX02A-EN Maintenance Preventive Maintenance Maintenance on the unit is simplified with the following preventive sugges- tions: WARNING Hazardous Voltage! Disconnect all electric power, in- cluding remote disconnects be- fore servicing. Follow proper lockout/tagout procedures to en- sure the power can not be inad- vertently energized. -
Page 26: Extended Warranty
Warranty Information Standard Warranty The standard water-source heat pump warranty is Trane’s parts-only warranty, running 12-months from star- tup, not to exceed 18-months from shipment. Extended Warranty The optional extended warranty is a second through fifth year warranty. The time starts at the end of standard 1-year coverage through the fifth year. -
Page 27: Troubleshooting
WSHP-SVX02A-EN Troubleshooting WARNING Hazardous Service Procedures! The maintenance and trouble shooting procedures recommend- ed in this section of the manual could result in exposure to electri- cal, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concern- ing these procedures. -
Page 28: Troubleshooting Checklist
Problem No response to any thermostat setting Unit short cycles Insufficient capacity High pressure switch open High head pressure Low suction pressure Low Pressure switch open Freezestat open Troubleshooting Checklist Heating Cooling Cause Main power off Defective control transformer Broken or loose connection Defective thermostat Transformer Thermostat or sensor improperly located... -
Page 29: Unit Wiring
Unit Wiring 2-ton through 6-Ton Equipment WSHP-SVX02A-EN... - Page 30 Unit Wiring 20-Ton Equipment WSHP-SVX02A-EN...
- Page 31 An American Standard Company www.trane.com For more information, contact Since Trane has a policy of continuous product and data improvement and reserves the right to change your local district office or e-mail us at design and specifications without notice. comfort@trane.com...
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