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Under some conditions, the fuel or air supply can create a
nearly invisible coating on the ame sensor. This coating
acts as an insulator causing a drop in the ame sense
signal. If the ame sense signal drops too low the furnace
will not sense ame and will lock out. The ame sensor
should be carefully cleaned by a qualied servicer using
steel wool.
The heat exchanger ue passageways should be inspected
at the beginning of each heating season.
• Cycle the furnace with the thermostat at least three
times. Verify cooling and fan only operation.
• Review the Owner’s Manual with the homeowner and
discuss proper furnace operation and maintenance.
• Leave literature packet near furnace.
• When ordering any of the listed functional parts, be
sure to provide the furnace model, manufacturing, and
serial numbers with the order.
• Although only functional parts are shown in the parts
list, all sheet metal parts, doors, etc. may be ordered
by description.
• Parts are available from your distributor.
Functional Parts List-
Gas Valve Blower Motor
Gas Manifold Blower Wheel
Natural Gas Orice Blower Mounting Bracket
Propane Gas Orice Blower Cuto
Igniter Blower Housing
Flame Sensor Inductor
Rollout Limit Switch Heat Exchanger with
Recuperator Coil
Primary Limit Switch Auxiliary Limit Switch
Pressure Switch Integrated Control Module
Induced Draft Blower Transformer
Door Switch Bluetooth Module
The furnace should be inspected by a qualied 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 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.
• Wiring. Check electrical connections for tightness
and/or corrosion. Check wires for damage.
Improper lter maintenance is the most common cause
of inadequate heating or cooling performance. Filters
should be cleaned (permanent) or replaced (disposable) as
required.
Visually inspect the burner ames periodically during the
heating season. Turn on the furnace at the thermostat
and allow several minutes for ames to stabilize, since any
dislodged dust will alter the ames normal appearance.
Flames should be stable, quiet, soft, and blue (dust may
cause orange tips but they must not be yellow). They
should extend directly outward from the burners without
curling, oating, or lifting o. Flames must not impinge on
the sides of the heat exchanger ring tubes.
CAUTION
The bearings in the induced draft blower and circulator
blower motors are permanently lubricated by the
manufacturer. No further lubrication is required. Check
motor windings for accumulation of dust which may cause
overheating. Clean as necessary.
Annually inspect the drain tubes, drain trap, and eld-
supplied drain line for proper condensate drainage. Check
drain system for hose connection tightness, blockage, and
leaks. Clean or repair as necessary.
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