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WARNING: Disconnect power to the unit before removing the blower door. Failure to follow this warning could result in property damage, personal injury or death. Downflow Furnace Filters Downflow/Horizontal furnaces use 2 standard size permanent type air filters which may be located remote to the furnace or in the return air duct. Check with your dealer for the location of your filters. A downflow/horizontal furnace vertical return air filter application, as shown, features two 14" x 20" x 1" filter in the 14-1/2" wide furnace cabinets; or two 16" x 20" x 1" filter in the 17-1/2", 21", and 24-1/2" wide furnace cabinets. A downflow/horizontal furnace with horizontal return air filter application, as shown, features two 14" x 20" x 1" filter in the 14-1/2" wide furnace cabinets; or two 16" x 20" x 1" filter in the 17-1/2", 21", and 24-1/2" wide furnace cabinets. DOWNFLOW/HORIZONTAL FILTER DOWNFLOW FILTER TABLE REQUIRED FILTERS - DOWNFLOW CABINET WIDTH FILTER QUANTITY & SIZE 14-1/2" 2 - 14" X 20" X 1" 17-1/2" 2 - 16" X 20" X 1" 21" 2 - 16" X 20" X 1" 24-1/2" 2 - 16" X 20" X 1" DOWNFLOW FILTER Pub. No. 32-5034-02 Page 5 The problem solver. A furnace is not a household appliance. It is complex and requires professional maintenance and repair. That’s why attempts at “do-it-yourself” repairs on an in- warranty unit may void the remainder of your warranty. Other than performing the simple maintenance recommended in this manual, you should not attempt to make any adjustments to your furnace. Your dealer will be able to take care of any questions or problems you may have. A periodic inspection of your furnace should be made by a qualified service agency at the start of each heating season. Keep your furnace looking like new for years. Clean the enamel finish of your furnace with ordinary soap and water. For stubborn grease spots, use a household detergent. Lacquer thinner or other synthetic solvents may damage the finish. Save time and money. Before calling for service, check the following: Problem Possible Trouble Possible Remedy No Heating - Blower Does not operate 1. Thermostat set incorrectly. 2. Blown fuse or tripped circuit breaker. 3. Defective component. 4. Burner does not ignite. 5. Main gas line turned off. 6. Blower door removed or ajar. 7. Lockout 1. Adjust thermostat See operating instructions 2. Replace or reset protective device or call for servicer. 3. Most controls are automatic and will recycle. If your unit still does not operate call for servicer. 4. Call servicer. 5. Have gas company check. 6. Close door securely to restore power to blower and gas valve. 7. Turn power on-off-on-off twice in 30 secs. Insufficient Heating Blower operates continuously 1. Dirty air filters. 2. Blocked supply or return registers. 1. Clean or replace filters. 2. Make sure registers are open and No obstacles blocking off the air. No Heat - Vent motor is running Restricted or plugged furnace condensate drain. 1. Remove drain clamps to condensate trap and drain pan outlet 2. Flush or clear drain blockage. 3. Reinstall clamps. Unusual Noise Call your servicer WARNING: CARBON MONOXIDE POISONING HAZARD Failure to follow the installation and operation instructions for the venting system's operation could result in carbon monoxide poisoning or death. WARNING: Do not touch igniter. It is extremely hot. Failure to follow this warning could result in severe burns, other injury, property damage, or death. CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. Page 6 Pub. No. 32-5034-02 Maintenance information. Never stop the cooling system by shutting off the main power. If the main power to your air conditioner is ever disconnected for more than three hours, turn off the thermostat. Then wait for at least three more hours after the power has been restored before turning the thermostat back on. Failure to follow this procedure could result in damage to your air conditioning system. 1. GENERAL INSPECTION - Examine the furnace installation for the following items: a. All flue product carrying areas external to the furnace (i.e. chimney, vent connector) are clear and free of obstruction. b. The vent connector is in place, slopes upward and is physically sound without holes or excessive corrosion. c. The return air duct connection(s) is physically sound, is sealed to the furnace and terminates outside the space containing the furnace. d. The physical support of the furnace should be sound without sagging, cracks, gaps, etc., around the base so as to provide a seal between the support and the base. e. There are no obvious signs of deterioration of the furnace. WARNING: Do not touch igniter. It is extremely hot. Failure to follow this warning could result in severe burns. 2. BLOWERS - The blower size and speed determine the air volume delivered by the furnace. The blower motor bearings are factory lubricated and under norm...