26
Air Filter(s) -
Air filter(s) are not supplied with the furnace as
shipped from the factory. The installer must provide a high
velocity filter that is appropriately sized to the return air duct
opening or external filter rack.
WARNING:
Never operate the furnace without a filter in place.
Dust and lint can build up on internal components,
resulting in loss of efficiency, equipment damage,
and possible fire.
It is recommended that filter(s) be 1” or 2” thick and be
cleaned or replaced monthly.
Filters designed to remove smaller particles such as pollen,
may require additional maintenance. Filters for side return
and bottom return applications are available from most local
distributors.
Blower Compartment -
Dirt and lint can create excessive
loads on the motor resulting in higher than normal operating
temperatures and shortened service life. It is recommended
that the blower compartment be cleaned of dirt or lint that
may have accumulated in the compartment or on the blower
and motor as part of the annual inspection.
Vent System -
Check the inlet pipe (if applicable) and outlet
pipe to ensure they are not blocked by debris. Any damaged
section of vent pipe must be replaced, and any obstruction
or blockage must be removed prior to operating the furnace.
Heat Exchanger & Burner Maintenance -
The furnace
should operate for many years without soot buildup in the
flue passageways, however, the flue, and vent system should
be inspected and cleaned (if required) by a qualified service
technician annually to ensure continued safe operation. Pay
attention to any deterioration from corrosion or other sources.
WARNING:
Holes in the vent pipe or heat exchanger can
cause combustion products to enter the home.
Replace the vent pipe or heat exchanger if leaks
are found. Failure to prevent the circulation of
combustion products into the living space can
create potentially hazardous conditions including
carbon monoxide poisoning that could result in
personal injury or death.
Lubrication -
The bearings in the blower motor and inducer
blower used in these furnaces are pre-lubricated and sealed
by the manufacturer. No further oiling of the bearings is
required for the life of the motor.
TROUBLESHOOTING
If the furnace fails to operate check the following:
• Is the thermostat operating properly?
• Are the blower compartment door(s) in place?
• Is the furnace disconnect closed?
• Has the circuit breaker tripped or the control board fuse
burned open?
• Is the gas turned on?
• Are any manual reset switches open?
• Is the filter dirty or plugged?
• Is the flame sensor coated? (Remove and clean with
steel wool.
(Do not use emery cloth or sandpaper!)
• Is there blockage in the condensate drain switch? Also
verify that there is no double trapping of condensate.
• Is the secondary heat exchanger free of debris and
clogs?
• Is evaporator coil clean and free of debris (If applicable).
• Are all the LED’s on the furnace control board constantly
ON? If not, refer to
or the wiring
diagram,
&
to
determine fault condition.
