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If filter replacement becomes necessary, it must be
replaced with a filter of the same type and size that
complies with UL900 or CAN/ULC-S111 standards.
See the Specification Sheet for filter sizes.
WARNING
PERSONAL INJURY HAZARD
To avoid death or personal injury due to electrical
shock, disconnect the electrical power before
removing filters or performing any maintenance.
Filters must be inspected, cleaned or changed every two
months or as required. It is the owner's responsibility to
keep air filters clean.
NOTE:
Dirty filters are the most
common cause of inadequate heating or cooling perfor-
mance.
Upflow Filters (Not Included With Furnace)
To remove the external upflow filter from the external
filter rack, disconnect electrical power to the furnace and
follow the directions provided with the external filter rack
kit.
NOTE:
If using Media Air Cleaner MAC1 or Electronic Air
Cleaner EAC6, follow the directions that came with the air
cleaner for proper filter removal, cleaning, and replace-
ment procedures.
Remove the blower compartment. Using a vacuum
cleaner, clean out the blower area, external filter rack
area, and the adjacent area of the return air duct.
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. Particular attention should be
paid to the following items. Repair as necessary.
• Flue pipe system. Check for any corrosion of the
flue pipe. If significant corrosion exists, have flue
pipe replaced.
• Wiring. Check electrical connections for tightness
and/or corrosion. Check wires for damage.
• Filters. Check that filters are clean and in the
proper placement in the furnace or duct system.
Filters
WARNING
To avoid death, personal injury or property damage,
never operate furnace without a filter installed. Dust
and lint will build up on internal parts resulting in loss
of efficiency, equipment damage and possible fire.
Even though a return air filter is not supplied with this
furnace, the return air must be filtered. The installer must
supply filters at the time of installation. Become familiar
with filter location and procedures for removing, cleaning
and replacing them. If needing help, contact the installer
of the furnace or another qualified servicer.
Routine Maintenance
If you perform maintenance on the furnace yourself, remember that certain mechanical and electrical knowledge, skills
and tools are required to perform maintenance on the furnace. Personal injury or death may result if you are not
properly trained. You should call your installing dealer or place of purchase if you are uncertain about your ability to
perform maintenance.
WARNING
To avoid death or personal injury due to electrical shock, disconnect the electrical power before performing any
maintenance.
