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HEAT PUMP INSTALLATION INSTRUCTIONS
Table of Contents
HEAT PUMP SAFETY.....................................................................1 SEQUENCE OF OPERATION ......................................................12
Cooling Cycle .............................................................................12
INSTALLATION REQUIREMENTS ................................................1
Heating Cycle .............................................................................12
Tools and Parts
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Indoor System Thermal Expansion Valve Tools and Parts Gather the required tools and parts before starting installation. W4GH6 units are designed for use with thermal expansion Read and follow the instructions provided with any tools listed valve systems only. The thermal expansion valve must be here. ordered separately from the manufacturer. Tools Needed Thermal Expansion Valve Kits Torch Gauge set for R-410A Model Part Number refrigerant ¹⁄₄" nut driver Service wrench with hex-
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Minimum Clearances Transition from Horizontal to Vertical This shows how to make a transition from horizontal to vertical. AB C D To Power Style 1 Style 2 Supply 48" Overhead To Clearance A G Indoor (Discharge Unit Air) To 12" Clearance Indoor (Inlet Air) Coil B B C C E F F D D E E 30" Service 12" Clearance Between 36" Clearance A. Style 1—anchored C. Liquid line E. Metal sleeve Access Clearance Unit and Building (Inlet Air) heavy nylon wire tie D. Vapor line— F. Wall stud B. Strap liqu
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Electrical Requirements Inspect Shipment WARNING WARNING Excessive Weight Hazard Use two or more people to move and install condensing unit or heat pump. Failure to do so can result in back or other injury. Electrical Shock Hazard This heat pump is shipped in one package, completely assembled and wired. The thermostat is shipped in a separate Electrically ground condensing unit or heat pump. carton when ordered. Connect ground wire to ground lug. 1. Check the heat pump rating plate to confirm
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1. Disconnect power. 8. Remove the valve cores. 2. Remove the refrigerant from the existing system per the manufacturer’s instructions provided with the recovery system being used. Connect the R-22 gauge set is connected to both sides of the refrigerant system (as shown), and verify that the entire system is void of refrigerant in A accordance with the manufacturer’s instructions provided with the recovery system being used. 3. Disconnect the liquid and vapor lines from the existing outdoo
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17. Install the valve cores. 18. Install the R-410A thermal expansion valve specified for this system in the indoor coil. NOTE: R-410A systems use only thermal expansion valves. 19. Pressurize the lines and indoor coil with a pressure not to exceed 20 psig. A 20. Leak test the lines with a pressure not to exceed 20 psig. 21. Open the suction and liquid service valves fully. 22. Insulate the suction line with refrigerant line insulation material of ¹⁄₄" or more wall thickness. 23. Pack insulat
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6. Tighten to 20 to 30 ft lbs. Use backup wrench on all wrench 6. Make sure indoor coil has been put in place according to the flats. Installation Instructions and is connected to the refrigerant ® lines. NOTE: Overtightening may crush the Teflon seal and cause a leak. 7. Replace valve cores. 8. Pressurize the lines and indoor coil with a pressure not to 7. Connect the external equalizer line to the equalizer port on exceed 20 psig. the suction line. 9. Leak test the lines with a pressure
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Normal Operating Pressures NOTE: Values provided in chart are typical pressures. Indoor unit matchup, indoor air quality and indoor load will cause pressures to vary. Model -24 -36 -48 -60 Temperature of the Air Entering the Outdoor Coil Liquid Suction Liquid Suction Liquid Suction Liquid Suction Cooling—1st Stage (Low Capacity) 65ºF 232 146 225 144 235 144 225 138 75ºF 264 148 261 147 268 145 264 141 85ºF 307 149 302 149 310 147 305 142 95ºF 353 151 349 151 356 148 352 146 105ºF 403 153 397
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Suction Line Sizes Liquid Line Sizes Installations exceeding 100 ft are not recommended. Installations exceeding 100 ft are not recommended. Btu/h Line Set Size (in. OD) Btu/h Line Set Size (in. OD) 24,000 ³⁄₄ ³⁄₄ ³⁄₄ 24,000 ³⁄₈ ³⁄₈ ³⁄₈ 36,000 ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ 36,000 ³⁄₈ ³⁄₈ ³⁄₈ 48,000 ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ 48,000 ³⁄₈ ³⁄₈ ³⁄₈ 60,000 1¹⁄₈ 1¹⁄₈ 1¹⁄₈ 60,000 ³⁄₈ ³⁄₈ ³⁄₈ Line Set Length Less than 25 ft Over 25 ft and Line Set Length Less than 25 ft Over 25 ft and 25 ft up to 50 ft 25 ft up to 50 ft Make Electrica
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4. Connect ground wire to ground lug. 5. Connect low voltage circuit. Typical Wiring Connection (low voltage circuit) T2 T1 NOTE: Some connections may not apply. Refer to specific thermostat and indoor unit. Without Auxiliary Heat Thermostat Indoor Unit Outdoor Unit Power Power A B R R R L2 L1 Common C C C 1st Stage 1st Stage W1 W1 W1 Aux. Heat Aux. Heat W2 W3 Indoor Blower If Applicable G G A Reversing Valve L2 L1 O O B Y1 Y1 Y1 Compressor Y2 Y2 Y2 C A. Ground lug With Auxiliary Heat B. Field s
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Outdoor Unit Typical Wiring Diagram LT BU R Outdoor Fan Dual Capacitor PR FC H Thermostat W1 Y1 Y2 BK C R O Fan BK OR O-OUT W1 W1 L Y C C LO-PS BU 24V L L DF R R BK Common O O R C S Y1 OUT Y1 Y1 HI-PS Compressor Diagnostic Module Crankcase Heater Defrost Control Y L2 208-230/60/1 Ground L1 Lug Ground Crankcase Thermostat Thermostat Defrost Control Reversing Valve C R W1 O Y1 Y2 Defrost Fan Thermostat L1 O-OUT W1 Low Pressure L C Compressor LO-PS Switch L 24V R Defrost Switch DF BK L1 C SR O Comm
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SEQUENCE OF OPERATION Defrost Control Cooling Cycle Upon cooling demand, the thermostat closes circuit R to O and Y. The defrost control board includes the combined functions of the Closing R to O and Y energizes the reversing valve for cooling time/temperature defrost control, defrost relay, diagnostic LEDs operation and closes the heat pump contactor, starting the and terminal strip for field wiring connections. See “Defrost compressor and outdoor fan. The thermostat automatically Cont
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Time Delay Adjust Defrost System The time delay is 5 minutes long. The delay helps to protect the Defrost Control Board compressor from short cycling in case the power to the heat pump is interrupted or a pressure switch opens. The delay is Optional high pressure switch connections bypassed by placing the timer select jumper across the TEST NOTE: To add the pressure switch, remove the factory-installed pins for 0.5 seconds. jumper. Pressure Switch Circuit P1 FAN 30 The defrost control inclu
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2. Remove the heater compartment access panel. 3. Connect the test pins on the defrost control using a test jumper wire. 3. Adjust the time period between defrost cycles by placing the defrost time plug in the proper position. See “Defrost Control NOTE: If the outdoor temperature is above 32°F, connect the Board.” defrost sensor terminals using a test jumper wire. See “Defrost Control Board” in the “Adjust Defrost System” For 30-minute intervals between defrost cycles, connect section. t
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TROUBLESHOOTING Heat Pump Fails to Operate Properly LED Description Review “Sequence of Operation” and visually inspect the heat Power LED (Green) indicates voltage is present at the power pump before troubleshooting: connection of the module. Alert LED (Yellow) communicates an abnormal system condition through a unique flash code. The Alert LED will flash a number of WARNING times consecutively, pause, and then repeat the process. The number of consecutive flashes correlates to a particular
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Flash Codes LED Status Fault Description Troubleshooting Information Thermostat demand signal is intermittent. Alert (Yellow) Flash Code 3 Short Cycling: Compressor is running only briefly. Time delay relay or control board is defective. If high pressure switch is present, go to Flash Code 2 information. If low pressure switch is present, go to Flash Code 1 information. Run capacitor has failed. Alert (Yellow) Flash Code 4 Locked Rotor Low line voltage (contact utility if voltage
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Incorrectly Wired Module Codes Depending on the system configuration, some Alert flash codes Incorrectly wiring the diagnostic module will cause false LED may not be active. The presence of safety switches affects how codes. The Incorrectly Wired Module Troubleshooting chart the system alerts are displayed by the module. describes LED operation when the module is incorrectly wired and what troubleshooting action is required to correct the problem. Incorrectly Wired Module Troubleshooting Inc
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Keep this book and your sales slip together for future reference. You must provide proof of purchase or installation Dealer name____________________________________________________ date for in-warranty service. Address ________________________________________________________ Write down the following information about your Split System Heat Pump—Outdoor Section to better help you obtain Phone number__________________________________________________ assistance or service if you ever need it. M
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48488A006 ®Registered Trademark/TM Trademark of Whirlpool, U.S.A., 6/06 © 2006. All rights reserved. Manufactured under license by Tradewinds Distributing Company, LLC., Coconut Grove, Florida Printed in U.S.A.
