HEAT PUMP INSTALLATION INSTRUCTIONSHEAT PUMP SAFETYINSTALLATION REQUIREMENTSThese instructions are intended as a general guide only for use byqualified persons and do not supersede any national or localcodes in any way. The installation must comply with all state andlocal codes as well as the National Electrical Code The heat pump is designed and approved for outdoor useonly. The heat pump must be installed with no ductwork in theairstream. The outdoor fan is not designed to operate againstany additional static pressure.Table of ContentsHEAT PUMP SAFETY.....................................................................1INSTALLATION REQUIREMENTS ................................................1Tools and Parts ............................................................................2System Requirements..................................................................2Location Requirements................................................................2Electrical Requirements ...............................................................4Inspect Shipment .........................................................................4Flush Refrigerant Lines ................................................................4Connect Refrigerant Lines ...........................................................6Make Electrical Connections .......................................................9Complete Installation .................................................................11SEQUENCE OF OPERATION ......................................................12Cooling Cycle .............................................................................12Heating Cycle .............................................................................12Defrost Cycle..............................................................................12Adjust Defrost System ...............................................................13Troubleshoot the Defrost System ..............................................14TROUBLESHOOTING ..................................................................15System Diagnostic Module ........................................................15SYSTEM MAINTENANCE ............................................................17ASSISTANCE OR SERVICE .........................................................17Accessories ................................................................................17WARRANTY ..................................................................................18Whirlpool Gold ™ Model W4GH648488A006You can be killed or seriously injured if you don't immediatelyYou can be killed or seriously injured if you don't followAll safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what canhappen if the instructions are not followed.Your safety and the safety of others are very important.We have provided many important safety messages in this manual and on your appliance. Always read and obey all safetymessages.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:follow instructions.instructions.DANGERWARNING