66
Rev 1
MAINTENANCE
WARNING
To avoid electrical shock, injury or death, disconnect
electrical power before performing any maintenance.
CAUTION
If you must handle the ignitor, handle with care. Touch-
ing the ignitor body with bare fingers, rough handling,
or vibration could result in early ignitor failure. Only a
qualified servicer should ever handle the ignitor.
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 ser-
vice 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 out-
side 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.
A return a filter is not supplied with this furnace; however,
there must be a means of filtering all of the return air. Filter(s)
must be supplied at time of installation.
Filters should be inspected, cleaned or changed every two
months or as required.
Remember that dirty filters are the most common cause
of inadequate heating or cooling performance.
WARNING
Disconnect the electrical power to the furnace before
removing the filter or performing any other mainte-
nance.
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 duct-
work above a counterflow furnace. A media air filter or elec-
tronic air cleaner can be used as an alternate filter. The filter
sizes given in the
PRODUCT DESIGN section of this manual
and the
SPECIFICATION SHEET must be followed to en-
sure proper unit performance. Refer to the following for re-
moval 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 compartment.
5. Replace filter and secure retainer opposite of removal.
6. Turn on electrical power to furnace and verify proper unit
operation.
To remove filters from an external filter rack in an upright
upflow installation, follow the directions provided with exter-
nal filter rack kit.
Media Air Filter or Electronic Air Cleaner Removal
Follow the manufacturer's directions provided with each ac-
cessory for service.
Accomodator Cabinet Filter or Horizontal Housing
Filter
Follow the manufacturer's directions provided with each ac-
cessory for service.
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