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Whirlpool W4GH8 Installation Instructions Manual

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HEAT PUMP INSTALLATION INSTRUCTIONS
HEAT PUMP SAFETY.....................................................................1
INSTALLATION REQUIREMENTS ................................................1
Tools and Parts ............................................................................2
System Requirements..................................................................2
Location Requirements................................................................2
Electrical Requirements ...............................................................4
INSTALLATION INSTRUCTIONS ..................................................4
Inspect Shipment .........................................................................4
Flush Refrigerant Lines ................................................................5
Connect Refrigerant Lines ...........................................................6
Charge Refrigerant Lines .............................................................8
Make Electrical Connections .....................................................10
Complete Installation .................................................................12
We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety
messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word "DANGER" or "WARNING."
These words mean:
WARNING
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can
happen if the instructions are not followed.
These instructions are intended as a general guide only for use by
qualified persons and do not supersede any national or local
codes in any way. The installation must comply with all state and
local codes as well as the National Electrical Code.
The heat pump is designed and approved for outdoor use
only.
Whirlpool Gold
®
Model W4GH8
48656D008

HEAT PUMP SAFETY

Your safety and the safety of others are very important.
DANGER

INSTALLATION REQUIREMENTS

Table of Contents

SEQUENCE OF OPERATION ......................................................13
Cooling Cycle .............................................................................13
Heating Cycle .............................................................................13
Defrost Cycle..............................................................................13
Adjust Defrost System ...............................................................14
Troubleshoot the Defrost System ..............................................15
TROUBLESHOOTING ..................................................................15
System Diagnostic Module ........................................................15
SYSTEM MAINTENANCE ............................................................17
ASSISTANCE OR SERVICE .........................................................17
Accessories ................................................................................17
WARRANTY ..................................................................................18
You can be killed or seriously injured if you don't immediately
follow instructions.
You can be killed or seriously injured if you don't follow
instructions.
The heat pump must be installed with no ductwork in the
airstream. The outdoor fan is not designed to operate against
any additional static pressure.

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Table of Contents
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  Summary of Contents for Whirlpool W4GH8

  • Page 1: Table Of Contents

    The installation must comply with all state and any additional static pressure. local codes as well as the National Electrical Code. The heat pump is designed and approved for outdoor use only. Whirlpool Gold ® Model W4GH8 48656D008...
  • Page 2: Tools And Parts

    15 ft of refrigerant line. In order to maintain the SEER rating, this heat pump must be W4GH8 units are designed for use with thermal expansion valve matched with an indoor section containing a variable speed systems only. The thermal expansion valve must be ordered blower.
  • Page 3 Minimum Clearances Transition from Horizontal to Vertical This shows how to make a transition from horizontal to vertical. A B C Style 1 Style 2 48" (121.9 cm) Overhead Clearance (Discharge Air) 12" (30.5 cm) Clearance A. Style 1—anchored heavy nylon wire tie E.
  • Page 4: Electrical Requirements

    Electrical Requirements All field wiring must be done in accordance with National Electrical Code requirements, applicable requirements of UL, WARNING or local codes, where applicable. Electrical wiring, disconnect means and over-current protection are to be supplied by the installer. Refer to the rating plate for the maximum over-current protection, minimum circuit ampacity, and operating voltage.
  • Page 5: Flush Refrigerant Lines

    Flush Refrigerant Lines Refrigerant lines must be flushed by a licensed, EPA certified Polyol ester (POE) oils are used in Whirlpool units charged refrigerant technician in accordance with established procedures. with R-410A refrigerant. Residual mineral oil from the R-22 system can act as an insulator, inhibiting proper heat transfer.
  • Page 6: Connect Refrigerant Lines

    Heat pumps should be installed only with specified line sizes for approved system W4GH8 heat pumps are designed for use with thermal expansion combination. See the Suction Line Sizes and Liquid Line valve systems only. An R-410A system will not operate properly Sizes charts later in this section.
  • Page 7 Thermal Expansion Valve Installation NOTE: If installing a thermal expansion valve on an indoor coil that previously used a fixed orifice, be sure to remove the existing fixed orifice. Failure to remove a fixed orifice when installing a thermal expansion valve to the indoor coil may result in improper operation and damage to the system.
  • Page 8: Charge Refrigerant Lines

    Suction Line Sizes Liquid Line Sizes Installations exceeding 100 ft (30.5 m) are not recommended. Installations exceeding 100 ft (30.5 m) are not recommended. Btu/h Line Set Size—in. (cm) OD Btu/h Line Set Size—in. (cm) OD ³⁄₄ (1.9) ³⁄₄ (1.9) ³⁄₄...
  • Page 9 6. Compare the sub-cooling value with those shown in Sub- Sub-cooling Values cooling Values for Thermal Expansion Valve Systems chart. If sub-cooling is greater than shown, recover some Model W4GH824A W4GH836A refrigerant. If sub-cooling is less than shown, add some refrigerant. Temperature ºF Model W4GH848A...
  • Page 10: Make Electrical Connections

    W4GH824A W4GH836A W4GH848A W4GH860A Air Temperature Entering Outdoor Coil ºF (ºC) Liquid Suction Liquid Suction Liquid Suction Liquid Suction Cooling—2nd Stage (High Capacity) 65 (18) 75 (23.9) 85 (29.4) 95 (35) 105 (40.6) 115 (46.1) Heating—1st Stage (Low Capacity) 40ºF 50ºF Heating—2nd Stage (High Capacity) 20º...
  • Page 11 4. Connect ground wire to ground lug. Typical Wiring Connection (low voltage circuit) Without Auxiliary Heat Thermostat Indoor Unit Outdoor Unit Power Power Common 1st Stage 1st Stage Aux. Heat Aux. Heat Indoor Blower If Applicable Reversing Valve Compressor With Auxiliary Heat Thermostat Indoor Unit Outdoor Unit...
  • Page 12: Complete Installation

    Outdoor Unit Typical Wiring Diagram LT BU Outdoor Dual Capacitor Motor F C H Thermostat O-OUT LO-PS Common Y1 OUT HI-PS Compressor Diagnostic Module Defrost Control Crankcase Heater 208-230/60/1 Ground Ground Crankcase Thermostat Thermostat Defrost Control Reversing Valve Defrost R W1 O Y1 Y2 Thermostat O-OUT Low Pressure...
  • Page 13: Sequence Of Operation

    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.
  • Page 14: Adjust Defrost System

    Pressure Switch Circuit The defrost control includes LO-PS terminals to connect an NOTE: If the TEST pins are jumpered and the 5-minute delay is optional low pressure (loss of charge pressure) switch. A high being bypassed, the LO PS terminal signal is not ignored during pressure switch (optional) can be connected to the HI PS the 90-second start-up period.
  • Page 15: Troubleshoot The Defrost System

    System Diagnostic Module Flash Codes chart for information on the flash codes. W4GH8 heat pumps contain a diagnostic module for Every time the module powers up, the last Alert LED flash code troubleshooting heat pump system failures. By monitoring and that occurred prior to shutdown is displayed for 60 seconds.
  • Page 16 Flash Codes LED Status Fault Description Troubleshooting Information Power (Green) Module has power. Supply voltage is present at module terminals. Trip (Red) Thermostat demand signal Y1 is Compressor protector is open. present, but the compressor is Outdoor unit power disconnect is open. not running.
  • Page 17: System Maintenance

    Please include a daytime phone number in your correspondence. address with any questions or concerns: Whirlpool ® Home Cooling and Heating Accessories 14610 Breakers Drive To order accessories contact your Whirlpool ® Home Cooling and Jacksonville, FL 32258 Heating dealer.
  • Page 18: Limited Warranty

    (20) years. Lifetime coverage under the limited lifetime heat exchanger warranty is subject to proof of purchase and is not transferable. All terms of this warranty must be followed. Heat Exchanger Availability: If a replacement heat exchanger is no longer available for a unit covered by this warranty, Whirlpool ®...
  • Page 19 (includes damages caused by brownouts) ® c) Modification, change or alteration of the equipment, except as directed in writing by Whirlpool Home Cooling and Heating d) Operation with system components (indoor unit, outdoor unit and refrigerant control devices) which do not match or meet the specifications recommended by Whirlpool ®...
  • Page 20 48656D008 ®Registered Trademark/TM Trademark of Whirlpool, U.S.A., 5/08 © 2008. All rights reserved. Manufactured under license by Tradewinds Distributing Company, LLC., Coconut Grove, Florida Printed in U.S.A.