ALWAYS KEEP MAIN OIL VALVE TURNED OFF IF BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF TIME. PERFORMING ROUTINE MAINTENANCE With proper maintenance and care, your furnace will operate economically and dependably. Instructions for basic maintenance follow. However, before beginning maintenance, follow these safety precautions: WARNING ! Turn off all electrical power to furnace before performing any maintenance or service on unit. Failure to take this precaution may result in personal injury due t

Applications are easy with 4-way multipoise design, through-the-furnace downflow venting, 13 different venting options, and a door designed for easy service access. An inner blower door is provided for tighter sealing in sensitive applications. The 310AAV/JAV furnace is approved for use with natural or propane gas, and the 310JAV is also approved for use in Low NOx Air Quality Management Districts. STANDARD FEATURES • Noise elimination combustion system • Microprocessor based control center A

26-38. A CAUTION Personal injury can result form sharp metal edges, etc. Be careful when removing parts. Gloves and safety glasses should be worn when servicing equipment. 3. Orient the door to determine the correct location of the door cutout to be removed. 4. Use aviation-type tin snips to remove the correct U-shaped cut-out on door. An accessory Vent Guard Kit, KGAVG0101DFG is REQUIRED for downflow applications for use where the vent exits through the lower portion of the furnace casing

The furnace filter should be checked every 3 or 4 weeks and cleaned if necessary. If installed with factory specified disposable media filter, check or replace filter before each heating and cooling season. Replace disposable media filter at least once a year. If your furnace filter needs replacing, be sure to use the same size and type of filter that was originally supplied. CAUTION! Never operate your furnace without a filter in place. Doing so may damage the furnace blower motor. An accumulat

Failure to follow this caution could result in personal injury. COMBUSTION AREA AND VENT SYSTEM Inspect the combustion area and vent system before each heating season. An accumulation of dirt, soot, or rust can mean a loss of efficiency and improper performance. Buildups on the main burners can cause faulty firing. This “delayed ignition’’ is characterized by an alarmingly loud sound. If your furnace makes a loud noise when the main burners are ignited, shut down the fur- nace—call your servicin

4. Fasten J--Box to casing with the two screws removed in Step 1. 5. Route J--Box wires within furnace away from sharp edges, rotating parts, and hot surfaces. Factory Installed Alternate Location A10291 Fig. 24 -- Relocating J--Box ELECTRICAL CONNECTION TO J--BOX 6. Reinstall cover to J--Box. Do not pinch wires between cover and bracket. Electrical Box on Furnace Casing Side. See Fig. 25. FIRE OR ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury, death, or p

3 CODESANDSTANDARDS.......................... 4 Safety ........................................ 4 GeneralInstallation............................... 5 CombustionandVentilationAir ..................... 5 DuctSystems ................................... 5 AcousticalLiningandFibrousGlassDuct ............. 5 GasPipingandGasPipePressureTesting ............. 5 ElectricalConnections ............................ 5 Venting ........................................ 5 ELECTROSTATICDISCHARGE PRECAUTIONS PROCE

The Plus 80x is very quiet thanks to a new combustion design that eliminates noise, rather than just muffle or box it in. Applications are easy with 4- --way multipoise design, through- --the--furnace downflow venting, 13 different venting options, and a door designed for easy service access. An inner blower door is provided for tighter sealing in sensitive applications. The 313JAV is approved for use in Low NOx Air Quality Management Districts. *as compared to the Air Conditioning Heating and R

— 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. • Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. — Installation and service must be performed by a qualified installer