MAINTENANCE
1414
The furnace should be inspected by a qualied installer, or
service agency at least once per year. This check should be
performed at the beginning of the heating season. This will
ensure that all furnace components are in proper working or-
der and that the heating system functions appropriately. Pay
particular attention to the following items. Repair or service
as necessary.
• Flue pipe system. Check for blockage and/or leak-
age. Check the outside termination and the connec-
tions at and internal to the furnace.
• Combustion air intake pipe system (where applicable).
Check for blockage and/or leakage. Check the outside
termination and the connection at the furnace.
• Heat exchanger. Check for corrosion and/or buildup
within the heat exchanger passageways.
• Burners. Check for proper ignition, burner ame, and
ame sense.
• Wiring. Check that electrical connections are tight
and free from corrosion. Check wires for damage.
• Filters.
Filters must be used with this furnace. Filters do not ship
with these furnaces but must be provided by the installer for
proper furnace operation.
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Improper lter maintenance is the most common cause of
inadequate heating or cooling performance. Filters should
be cleaned (permanent) or replaced (disposable) every two
months or as required. It is the owner’s responsibility to keep
air lters clean. When replacing a lter, it must be replaced
with a lter of the same type and size.
The bearings in the induced draft blower and circulator blow-
er motors are permanently lubricated by the manufacturer.
No further lubrication is required. Check motor windings for
accumulation of dust which may cause overheating. Clean
as necessary.
Under some conditions, the fuel or air supply can create a
nearly invisible coating on the ame sensor. This coating
acts as an insulator, causing a drop in the ame sensing
signal. If this occurs, a qualied servicer must carefully clean
the ame sensor with steel wool. After cleaning, the ame
sensor output should be as listed on the specication sheet.
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Periodically during the heating season make a visual check of
the burner ames. Turn the furnace on at the thermostat. Wait
a few minutes since any dislodged dust will alter the normal
ame appearance. Flames should be stable, quiet, soft and
blue with slightly orange tips. They should not be yellow. They
should extend directly outward from the burner ports without
curling downward, oating or lifting o the ports.
Test equipment list for furnace servicing should include:
1. Multi-Meter for checking voltage & resistance
2. Clamp-on amp meter
3. Digital thermometer
4. Gas pressure test equipment
5. Combustible gas / Carbon Monoxide detector
6. Combustion Analyzer
7. Micro-amp meter
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