USER’S, MAINTENANCEandSERVICE INFORMATIONMANUALSINGLE PACKAGEDUAL FUELHEAT PUMP858539-YUM-A-0512CONTENTSSAFETY INFORMATION - . . . . . . . . . . . . . . 2GENERAL INFORMATION . . . . . . . . . . . . . 2SYSTEM OPERATION . . . . . . . . . . . . . . . . 2THERMOSTATS . . . . . . . . . . . . . . . . . . . 2COOLING CYCLE . . . . . . . . . . . . . . . . . . 2HEATING CYCLE . . . . . . . . . . . . . . . . . . 3SPARK TO PILOT IGNITION DEVICE . . 3INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . 3FOR YOUR SAFETY, READ BEFORE OPERAT-ING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3WHAT TO DO IF YOU SMELL GAS . . . . . . 3START-UP INSTRUCTIONS - HEATING SYS-TEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4SHUTDOWN INSTRUCTION - TO TURN OFFGAS TO APPLIANCE . . . . . . . . . . . . . . . . . 4SECURE OWNER’S APPROVAL . . . . . . 4MAINTENANCE . . . . . . . . . . . . . . . . . . . . . 5NORMAL MAINTENANCE . . . . . . . . . . . . 5LUBRICATION . . . . . . . . . . . . . . . . . . . . . 5GENERAL MAINTENANCE . . . . . . . . . . . 5FILTER CARE . . . . . . . . . . . . . . . . . . . . . 5OUTDOOR COIL . . . . . . . . . . . . . . . . . . . 5BURNER . . . . . . . . . . . . . . . . . . . . . . . . . 5TO CLEAN BURNERS . . . . . . . . . . . . . . . 5COMBUSTION AIR DISCHARGE . . . . . . 5CLEANING FLUE PASSAGES AND HEATEXCHANGER . . . . . . . . . . . . . . . . . . . . . 5REGISTERS . . . . . . . . . . . . . . . . . . . . . . 5TROUBLESHOOTING . . . . . . . . . . . . . . . . 6BEFORE CALLING ASERVICE-PERSON: . . . . . . . . . . . . . . . . 6REPLACEMENT PARTS . . . . . . . . . . . . . . 6SOME EFFICIENCY DO'S AND DON'TS . . 6The manufacturer recommends that the “User” read all sections of thismanual and keep the manual for future reference.FIRE OR EXPLOSION HAZARDFailure to follow safety warnings exactlycould result in serious injury, death, or prop-erty damage.- Do not store or use gasoline or other flam-mable vapors and liquids in the vicinity ofthis or any other appliance.- WHAT TO DO IF YOU SMELL GAS:• Do not try to light any appliance.• Do not touch any electrical switch; do notuse any phone in your building.• Leave the building immediately.• Immediately call your gas supplier from aneighbor’s phone. Follow the gas supplier’sinstructions.• If you cannot reach your gas supplier, callthe fire department.- Installation and service must be performedby a qualified installer, service agency orthe gas supplier.