MODEL F80A
MAINTENANCE
AIR FILTER
REMOVING FILTER
1.Disconnect electrical power to the furnace.
2.Pull the filter out the front.
3.Replace with a fresh filter and reconnect power to the furnace. The filter will have an arrow indicating proper airflow direction.
DO NOT OPERATE YOUR FURNACE (OR AIR CONDITIONER) WITHOUT AN AIR FILTER.
WARNING
DISCONNECT THE ELECTRICAL POWER TO THE FURNACE BEFORE ATTEMPTING ANY MAINTENANCE. FAILURE TO DO SO MAY CAUSE ELECTRICAL SHOCK RESULTING IN SEVERE PERSONAL INJURY OR DEATH.
Consult your installation contractor or service technician if you have any questions on filters.
Figure 4: Air Filter
LUBRICATION
Minimal lubrication is required for your furnace. The induced blower assembly motors have sealed bearings. The bearings contain permanent special purpose lubricants. Attempting to force common oil into the induced blower motor bearings will deteriorate the original lubricant and shorten bearing life.
ROUTINE EXAMINATION
It is good practice to give a quick inspection of your furnace each time you inspect or clean the air filter. Things to check:
•All areas around the vent connector and chimney should be clear and free of obstructions.
•Check the venting to ensure that it is still fastened to the furnace. It should not sag and should have a slope upwards to the chimney. It should be physically sound, without holes or excessive corrosion.
•The return air duct connection must be sound and securely fastened to the furnace casing. In most cases, the filter rack provides the means to connect the return air to the furnace. There should be no return air inlets in the vicinity of the furnace.
•All ductwork should be secured to the furnace, and all ductwork should be solidly supported throughout the heating system.
•The furnace should be well supported on a level floor or by the means used to suspend the furnace in a horizontal configuration. Base support should be physically sound without sagging, cracks, gaps, etc. around the base so as to provide a seal between the support and the base.
•Check the furnace for obvious signs of deterioration.
•The gas burner should be observed from time to time during the heating season to ensure that the flames are clean and blue. A bit of orange color in the flame is not likely to be a problem and is probably dust particles burning. If you observe lazy yellow flames, call your heating or service contractor immediately. The yellow flames inevitably lead to sootups.
FURNACE APPEARANCE
The furnace exterior finish is a durable
CLEANING
It is advisable to keep dust buildup on warm surfaces to a minimum, since dust, in some cases, can be combustible.
Dust buildup in the circulating fan can impair blower performance; therefore, reduce efficiency. Because the blower wheel is fastened directly to the blower motor, we recommend that major cleaning be left to your service contractor.
CAUTION
DO NOT PERMIT WATER OR CLEANING SOLUTIONS TO ENTER THE ELECTRIC MOTOR.
The burner area should be inspected and cleaned periodically. Be careful when cleaning around the burner area. The hot surface igniter is fragile and will break easily. Do not touch the hot surface igniter or flame rod.
WARNING
NEVER ATTEMPT TO CLEAN THE BURNER AREA WHILE THE BURNERS ARE OPERATING. DOING SO MAY RESULT IN EXPLOSION OR FIRE RESULTING IN SEVERE PERSONAL INJURY OR DEATH.
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