USER°S INFORMATIONAH Residential MumtiopOSition Gas Furnaces(33" Modems) ISO 9o01Certified QualityManagement SystemTABLE OF CONTENTSCONTACT INFORMATION ............................... 1SAFETY ................................................ 1INSTRUCTIONS FOR EXAMINING THEFURNACE INSTALLATION ................................ 2START-UP AND SHUTDOWN INSTRUCTIONS ................ 3HOW YOUR GAS FURNACE WORKS ...................... 3OPERATING INSTRUCTIONS ............................. 4TO TURN OFF THE APPLIANCE .......................... 4FURNACE MAINTENANCE - USER INFORMATION ............ 4EXTERNAL AIR FILTERS ................................ 4How to Clean your Filter ................................. 5BLOWER CARE ........................................ 5MOTOR LUBRICATION .................................. 5SERVICE INFORMATION .................................. 5TROUBLESHOOTING PROBLEMS ......................... 5FURNACE CONTROL DIAGNOSTICS ....................... 5FURNACE MAINTENANCE - DEALER/CONTRACTOR ......... 5REPLACEMENT PARTS LIST ............................. 5WIRING DIAGRAM ........................................ 5LIMITED WARRANTY ..................................... 6CONTACT INFORMATION• Go to website at www.york.com click on "about us", then click on "contact us" and follow the instructions•• Contact us by mail:Johnson Controls Unitary ProductsConsumer Relations5005 York DriveNorman, OK 73069We recommend that the user read all sections of thismanual and keep the manual for future reference.WARNINGFIRE OR EXPLOSION HAZARD - Failure to follow safety warningsexactly could result in serious injury, death, or property damage•-- Do not store or use gasoline or other flammable vapors andliquids in the vicinity of this 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 not use any phone (includ-ing cell phone) in your building•Leave the building immediately•Immediately call your gas supplier from a neighbor's phone• Fol-low the gas supplier's instructions•If you cannot reach your gas supplier, call the fire department•-- Installation and service must be performed by a qualifiedinstaller, service agency or the gas supplier.SECTION I: SAFETYThis is a safety alert symbol• When you see this symbol onlabels or in manuals, be alert to the potential for personalinjury.Understand and pay particular attention to the signal words DANGER,WARNING, or CAUTION•DANGER indicates an imminently hazardous situation, which, if notavoided, will result in death or serious iniurv.WARNING indicates a potentially hazardous situation, which, if notavoided, could result in death or serious iniurv.CAUTION indicates a potentially hazardous situation, which, if notavoided mav result in minor or moderate iniurv. It is also used toalert against unsafe practices and hazards involving only property dam-age.1. The furnace area must be kept clear and free of combustible mate-rials, gasoline and other flammable vapors and liquids•2. Insulating materials may be combustible• The furnace must bekept free and clear of insulating materials• The furnace area mustbe examined when installed in an attic or other insulated space orwhen insulation is added to be sure that the insulation material hasbeen kept away from the furnace•3. The furnace needs air for combustion in order to operate properlyand safely• Do not block or obstruct air openings on the furnace,air openings to the area where the furnace is installed, or spacesaround the furnace•4. Follow the instructions exactly as shown on the OPERATINGINSTRUCTION LABEL on the furnace or the "START-UP ANDSHUTDOWN INSTRUCTIONS" section of this manual when light-ing the furnace or turning the furnace off.5. Should the gas supply fail to shut off or if overheating occurs, shutoff the gas valve to the furnace before shutting off the electricalsupply•6. Do not use this furnace if any part has been under water• A flood-damaged furnace is extremely dangerous• Attempts to use the fur-nace can result in fire or explosion• A qualified service agencyshould be contacted to inspect the furnace and replace all gascontrols, control system parts, electrical parts that have been wetor the furnace if deemed necessary•7. NEVER.. •Store flammable materials of any kind near your fur-nace. Gasoline, solvents, and other volatile liquids should bestored only in approved containers outside your home. Thesematerials vaporize easily and are extremely dangerous•8. NEVER.. •Store cleaning materials near your furnace• Materialssuch as bleaches, detergents, powdered cleansers, etc., cancause corrosion of the heat exchangers•9. NEVER... Use the area around your furnace as a storage areafor items which could block the normal flow of air. This flow of air isrequired for ventilation of the various furnace components•356486-U UM-J-1211