53
Rev. 0
MAINTENANCE
WARNING
TO AVOID ELECTRICAL SHOCK, INJURY OR DEATH,
DISCONNECT ELECTRICAL POWER BEFORE PER-
FORMING ANY MAINTENANCE.
CAUTION
IF YOU MUST HANDLE THE IGNITOR, HANDLE WITH
CARE. TOUCHING THE IGNITOR BODY WITH BARE
FINGERS, ROUGH HANDLING, OR VIBRATION COULD
RESULT IN EARLY IGNITOR FAILURE. ONLY A QUALI-
FIED SERVICER SHOULD EVER HANDLE THE IGNI-
TOR.
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 work-
ing order and that the heating system functions appropri-
ately. 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 appli-
cable). Check for blockage and/or leakage. Check
the outside termination and the connection at the fur-
nace.
•
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 leak-
age. Check hose connections at and internal to fur-
nace.
•
Wiring. Check electrical connections for tightness
and/or corrosion. Check wires for damage.
•
Filters.
AIR FILTER
WARNING
NEVER OPERATE FURNACE WITHOUT A FILTER IN-
STALLED AS DUST AND LINT WILL BUILD UP ON IN-
TERNAL 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 for proper operation.
Remember that dirty filters are the most common cause of
inadequate heating or cooling performance.
WARNING
DISCONNECT THE ELECTRICAL POWER TO THE FUR-
NACE BEFORE REMOVING THE FILTER OR PER-
FORMING ANY OTHER MAINTENANCE.
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 fil-
ter or electronic air cleaner can be used as an alternate
filter. The filter sizes given in the
Product Design section of
this manual and 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. Turn off electrical 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 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.
To remove filters from an external filter rack in an upright
upflow installation, follow the directions provided with ex-
ternal filter rack kit.
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.
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