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Trane EXWA manual

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Table of contents for the manual

  • Page 1

    WSHP-SVX02A-EN Models “A” and later Design Sequence Installation Owner Diagnostics Water-to-Water Water-Source Heat Pump Models WPWD, GSWD and EXWA WPWD 024-072 – 60 HZ GSWD 024-072 – 60 HZ EXWA 240 – 60 HZ[...]

  • Page 2

    © 2002 American Standard Inc. WSHP-SVX02A-EN Notice NOTICE: Warnings and Cautions appear at appropriate sections throughout this manual. Read these carefully. WARNING -Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION -Indicates a potentially hazardous situation which, if not avoide[...]

  • Page 3

    WSHP-SVX02A-EN 3 Contents Installation/Startup/Commissioning 4 Pre-installation Checklist 4 General Information 5 Dimensions/Weights 6 Installation Instructions 10 Electrical Requirements 19 Pre-Startup Checklist 20 Startup/Commissioning 21 Sequence of Operation 21 Operating Pressures 22 30 Startup Checklist & Log 24 Maintenance 25 Warranty Inf[...]

  • Page 4

    4 WSHP-SVX02A-EN WARNING Fiberglass Wool! Product contains fiberglass wool. Disturbing the insulation in this product during installation, maintenance or repair will expose you to airborne particles of glass wool fibers and ceramic fibers known to the state of California to cause cancer through inhalation. Glass wool fibers may also cause respirato[...]

  • Page 5

    WSHP-SVX02A-EN 5 General Information Unit Nameplate The unit nameplate is located at the front of the unit. It includes the unit model number, serial number, electri- cal characteristics, refrigerant charge, and other pertinent unit data. Compressor Nameplate The nameplate for the compressors are located on the compressor shell. Unit Description Be[...]

  • Page 6

    6 WSHP-SVX02A-EN Table 1: Unit weights Size Shipping Weight with pallet (lb) Shipping Weight w/o pallet (lb) 024 163 153 036 183 173 042 203 193 048 214 204 060 244 234 072 277 267 240 1222 1156 WARNING Improper Unit Lift! Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lif[...]

  • Page 7

    WSHP-SVX02A-EN 7 Dimensions WPWD/GSWD 024-036[...]

  • Page 8

    8 WSHP-SVX02A-EN Dimensions WPWD/GSWD 042-072[...]

  • Page 9

    WSHP-SVX02A-EN 9 Dimensions EXWA 240[...]

  • Page 10

    10 WSHP-SVX02A-EN 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 m[...]

  • Page 11

    WSHP-SVX02A-EN 11 Figure 2: Racking installation 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. Failure to properly lift unit could result in death or serious injury or possible equipment or property-only dama[...]

  • Page 12

    12 WSHP-SVX02A-EN 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. See Page 14 for antifreeze/water mixtur[...]

  • Page 13

    WSHP-SVX02A-EN 13 Supply/Return Pipe Connections to the Loop Pump Kit (1) Connect the supply and return hos- es to the water-inlet (from supply) and water-outlet (to return) of the unit. The rubber gaskets for the water-in and water-out connections are located in the control box. These gaskets require field installation prior to connecting the wate[...]

  • Page 14

    14 WSHP-SVX02A-EN 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; and consists of piping [...]

  • Page 15

    WSHP-SVX02A-EN 15 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. The hose kit and unit should be fi[...]

  • Page 16

    16 WSHP-SVX02A-EN 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. Have a[...]

  • Page 17

    WSHP-SVX02A-EN 17 Controls Using 24 VAC Before installing any wire, refer to the electrical access locations on the unit submittals located on pages 7 through 9. 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. Note: Resistance in excess[...]

  • Page 18

    18 WSHP-SVX02A-EN 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. 35 °F or 20°F). Both the [...]

  • Page 19

    WSHP-SVX02A-EN 19 Table E-1: Electrical performance WPWD/EXWA Table E-2: Electrical performance GSWD Model/MBH VOLTS-AC/HZ/PH Min. Util. Volt Max Util. Volt Compressor Each RLA LRA No. of Comp Without Desup With Desup MCA Max Fuse Desup RLA MCA Max Fuse WPWD024 208-230/60/1 197 253 11.4 56.0 1 14.3 25 0.4 14.7 25 220-240/50/1 198 264 9.6 47.0 1 12.[...]

  • Page 20

    20 WSHP-SVX02A-EN Pre-Start 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 p[...]

  • Page 21

    WSHP-SVX02A-EN 21 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 circu[...]

  • Page 22

    22 WSHP-SVX02A-EN Operating Pressures Table OP-1: Cooling mode operating pressures Unit Size Entering Load (Degree F) Entering Source Temperature (Degree F) 50 86 104 Suction Pressure Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure Discharge Pressure EXWA 240 53.6 46-56 103-143 49-59 188-228 49-59 238-278 EXWA 240 86 61-71 1[...]

  • Page 23

    WSHP-SVX02A-EN 23 Operating Pressures Table 7: Heating water pressure drops (WPD) in feet of head Unit Size GPM Source Load EWT F Ft. Head Pressure EWT F Ft. Head Pressure 024 3.8 60 1.5 80 1.3 7.0 5.1 4.5 8.9 8.3 7.2 036 4.6 60 2.2 80 1.9 8.5 7.6 6.6 10.8 12.2 10.6 042 5.2 60 2.8 80 2.4 9.5 9.8 8.6 12.1 16.2 14.1 048 6.0 60 3.8 80 3.3 11.0 13.3 11[...]

  • Page 24

    24 WSHP-SVX02A-EN Start-up Checklist and Log 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 sys[...]

  • Page 25

    WSHP-SVX02A-EN 25 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. Failure to discon[...]

  • Page 26

    26 WSHP-SVX02A-EN 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 cover[...]

  • Page 27

    WSHP-SVX02A-EN 27 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. When possi- ble[...]

  • Page 28

    28 WSHP-SVX02A-EN Troubleshooting Checklist Problem Heating Cooling Cause Correction No response to any thermostat setting X X Main power off Check fuses X X Defective control transformer Replace X X Broken or loose connection Repair X X Defective thermostat Replace X X Transformer Reset Transformer Unit short cycles X X Thermostat or sensor improp[...]

  • Page 29

    WSHP-SVX02A-EN 29 Unit Wiring 2-ton through 6-Ton Equipment[...]

  • Page 30

    30 WSHP-SVX02A-EN Unit Wiring 20-Ton Equipment[...]

  • Page 31

    Since Trane has a policy of continuous product and data improvement and reserves the right to change design and specifications without notice. Literature Order Number WSHP-SVX02A-EN File Number SV-UN-WSHP-SVX02A-8-02 Supersedes WSHPC-IOM-4 and 72-9036-02 Stocking Location Inland Trane An American Standard Company www.trane.com For more information,[...]