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MAINTENANCE
WARNING
HIGH VOLTAGE
Disconnect ALL power before servicing or in
-
stalling this unit. Multiple power sources may
be present. Failure to do so may cause proper
-
ty damage, personal injury or death.
CAUTION
If you must handle the igniter, handle with care. Touching
the igniter body with bare fingers, rough handling, or
vibration could result in early ingitor failure. Only a
qualified servicer should ever handle the igniter.
Annual Inspection
The furnace should be inspected by a qualified 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 order 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 leakage.
Check the outside termination and the connections 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 flame, and
flame sense.
•
Drainage system. Check for blockage and/or leakage.
Check hose connections at and internal to furnace.
•
Wiring. Check electrical connections for tightness and/
or corrosion. Check wires for damage.
•
Filters.
Air Filter
WARNING
Never operate furnace without a filter installed as dust
and lint will build up on internal parts resulting in loss of
efficiency, equipment damage, and possible fire.
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.
Remember that dirty filters are the most common cause of
inadequate heating or cooling performance.
WARNING
HIGH VOLTAGE
Disconnect ALL power before servicing,
removing the filter or performing any other
maintenance. Multiple power sources may be
present. Failure to do so may cause property
damage, personal injury or death.
MAINTENANCE
Improper filter 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 filters clean. When replacing a filter, it must be
replaced with a filter of the same type and size.
FILTER REMOVAL
Depending on the installation, differing filter arrangements
can be applied. Filters can be installed in the central return
register, the bottom of the blower compartment (upflow
only), a side panel external filter rack kit (upflow only), or
the ductwork above a counterflow furnace. A media air
filter or electronic air cleaner can be used as an alternate
filter. The filter sizes given in the Product Design section
of this manual or the product Specification Sheet must be
followed to ensure proper unit performance. Refer to the
following information for removal and installation of filters.
Filter Removal Procedure Media Air Filter or
Electronic Air Cleaner Removal
Follow the manufacturer’s directions for service.
Upright Counterflow Filter Removal
To remove filters from the ductwork above an upright
counterflow installation:
1. Turn off electrical power to furnace.
2. Remove access door in ductwork above furnace.
3. Remove filters.
4. Remove blower compartment door. Vacuum
compartment. Replace blower compartment door.
5. Replace filters opposite of removal.
6. Replace access door in ductwork.
Horizontal Unit Filter Removal
Filters in horizontal installations are located in the central
return register.
Induced Draft And Circulation Blowers
The bearings in the induced draft blower and circulator
blower 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.
