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SINGLE STAGE & TWO-STAGE GAS FURNACES

USER’S MANUAL

NON-CONDENSING GAS FURNACES

CONDENSING GAS FURNACES

80+ AFUE

(United States Only)

95% & Up to 96% AFUE

J801X*U Upflow / Horizontal Furnace

J951X*U & J952V*U Upflow / Horizontal Furnace

 J801X*D Downflow Furnace

J951X*D & J962V*D Downflow Furnace

 WARNING

FIRE OR EXPLOSION HAZARD

•  Failure to follow safety warnings exactly could 

result in serious injury, death or property 

damage.

•  Installation and service must be performed by 

a qualified installer, service agency or the gas 

supplier.

•  Do not store or use gasoline or other flammable 

vapors and liquids 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 in your building.

•  Leave the building immediately.

• Immediately call your gas supplier from a 

neighbors phone. Follow the gas suppliers 

instructions.

•  If you cannot reach your gas supplier, call the 

fire department.

DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

Summary of Contents for J801X D Series

Page 1: ...tallation and service must be performed by a qualified installer service agency or the gas supplier Donotstoreorusegasolineorotherflammable vapors and liquids 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 in your building Leave the building immediately Immediately call your gas su...

Page 2: ...RODUCTION 5 CATEGORY I NON CONDENSING FURNACES 5 CATEGORY IV CONDENSING FURNACES 5 FILTER 5 THERMOSTAT 5 FURNACE LOCATION 5 COMPONENT LOCATIONS FOR SINGLE STAGE FURNACES 6 COMPONENT LOCATIONS FOR TWO STAGE FURNACES 7 STARTUP SHUTDOWN 7 STARTING THE FURNACE 7 SHUTTING DOWN THE FURNACE 7 MAINTENANCE INSPECTION 8 FURNACE AIR DUCTS 8 VENTING SYSTEM 8 BLOWER FILTER 8 BURNER OPERATION 8 NEW CONSTRUCTION...

Page 3: ...ve been wet or the furnace if deemed necessary Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored WARNING indicates a potentially hazardous situation that if not avoided could result in personal injury or death CAUTION indicates a potentially hazardous situation that if not avoided may result in minor or moderate injur...

Page 4: ...nd glues Antistatic fabric softeners Masonry acid washing materials CAUTION This furnace requires unrestricted airflow for combustion and ventilation For proper and safe operation it is extremely important that the furnace receives an unobstructed flow of clean fresh air to properlyburnthefuelgas Ifthisflowofairisrestricted the partially burned combustion gases may create dangerous amounts of carb...

Page 5: ...st maintain a downward slope to ensure proper condensate drainage Condensate must flow freely during furnace operation The homeowner must make sure the condensate drain lines do not become blocked pinched or crushed If the furnace is installed in an area where temperatures fall below freezing special precautions must be made for insulatingcondensatedrainlinesthatdraintotheoutdoors If condensate fr...

Page 6: ...al Non Condensing Gas Furnace J801X D Downflow Non Condensing Gas Furnace Furnace Control Board Burner Assembly Finish Flange Flame Sensor Igniter Roll Out Switch Gas Valve Furnace Control Board Condensate Pressure Switch Transformer Blower Assembly Blower Door Switch Inducer Assembly Inducer Pressure Switch Inducer Limit Switch Main Air Limit Switch Burner Assembly Flame Sensor Roll Out Switch Fi...

Page 7: ... or knob to the OFF position See Figure 1 for gas valve switch or knob location 8 Wait 5 minutes If there is any smell of gas see WHAT TO DO IF YOU SMELL GAS on page 4 9 Set the gas valve switch or knob to the ON position 10 Turn on all electric to the furnace 11 Open the manual gas valve 12 Turn the thermostat back up to force ignition 13 Observe operation including burners If burners fail to ign...

Page 8: ...orontheblowerandmotoraspartoftheannualinspection Keepairfilterscleaned Itisrecommendedthatthefurnace airfilterbecheckedatleastonceamonth Cleanorreplace filter to maintain proper airflow and achieve maximum efficiency Furniture and drapery should be arranged so that the supply air registers and return grilles are not obstructed BURNER OPERATION Performthestartupinstructionsonpage7 Theignitershould ...

Page 9: ...gns of physical deterioration of the furnace X X X Verify no obstructions or restrictions in vent or chimney X X Verify no holes or cracks in vent pipe X X Verify no corrosion in vent pipe X X Verify the horizontal vent pipes slope upwards away from furnace X X Verify burner flame X Clean or replace filter s X Clean blower compartment X Clean burner assembly X Clean condensate collection disposal ...

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