Instruction manual

40
not remove. To access the filter, tilt the wire filter
retainer upwards.
4. Slide filter forward and out. Vacuum blower compart-
ment.
5. Replace filter and secure retainer opposite of removal.
6. Replace blower compartment door and turn ON ther-
mostat or electrical power to furnace.
To remove internal filter(s) from the retaining rails on the
side(s) of the blower compartment in an upright installa-
tion:
1. Set the thermostat to the OFF position or turn OFF
electrical power to furnace.
2. Remove the blower compartment door.
3. Grasping the lower portion of the filter, disengage the
filter from the lower railing by lifting it up and toward the
blower. Lower the filter down and pull outward.
4. Replace filter and blower compartment door opposite
of removal and turn ON thermostat or electrical power.
Front of Furnace
Blower
Grab Here
And Lift
Filter
Front of Furnace
Blower
a. Lift filter above bottom b. Tilt filter to clear rail.
rail
Front of Furnace
Blower
Front of Furnace
Blower
c. Lower filter below top d. Pull filter out.
rail.
Filter Removal Procedure
To remove filters from an external filter rack in an upright
upflow installation, follow the directions provided with
external filter rack kit.
Media Air Filter or Electronic Air Cleaner Removal
Follow the manufacturer’s directions for service.
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 appro-
priately. 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.
FILTERS
CAUTION
To ensure proper unit performance, adhere
to the filter sizes given in the Specifications
Sheet.
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. 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 Specifications Sheet must
be followed to ensure proper unit performance. Refer to
the following for removal and installation of filters.
Upright Upflow Filter Removal
To remove a filter from the bottom of the blower compart-
ment:
1. Set thermostat to the OFF position or turn OFF electri-
cal power to furnace.
2. Remove blower compartment door.
3. Push back and up on the wire filter retainer to release
it from under the front lip of the furnace basepan. Do