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MODEL F80A
M
AINTENANCE
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.
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.
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.
D
O NOT OPERATE YOUR FURNACE (OR AIR CONDITIONER)
WITHOUT AN AIR FILTER.
Figure 4: Air Filter
R
OUTINE EXAMINATION
It is good practice to give a quick inspection of your furnace
e
ach 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
a
ir 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 automotive-like
coating. It may be washed with mild soap if necessary.
Galvanized metal surfaces require no maintenance.
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.
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.
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.