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Cleaning the Burner Assembly (if needed)
1 - Turn off electrical and gas power supplies to furnace.
Remove upper and lower furnace access panels.
2 - Disconnect the 2-pin plug from the gas valve.
3 - Remove the burner box cover (if equipped).
4 - Disconnect the gas supply line from the gas valve. Re
move gas valve/manifold assembly.
5 - -Loosen clamps and remove combustion air intake
flexible connector (if equipped).
5 - Mark and disconnect sensor wire from the sensor. Dis
connect plug from the ignitor at the burner box.
6 - Remove four screws which secure burner box assem
bly to vest panel. Remove burner box from the unit.
7 - Use the soft brush attachment on a vacuum cleaner to
gently clean the face of the burners. Visually inspect
the inside of the burners and crossovers for any block
age caused by foreign matter. Remove any blockage.
8 - Reinstall the burner box assembly using the existing
four screws. Make sure that the burners line up in the
center of the burner ports.
9 - Reconnect the sensor wire and reconnect the 2-pin
plug to the ignitor wiring harness.
10 - Reinstall combustion air intake flexible connector (if
equipped), secure using existing clamps.
11 - Reinstall the gas valve manifold assembly. Reconnect
the gas supply line to the gas valve. Reinstall the burn
er box cover.
12 - Reconnect plug to gas valve.
13 - Replace the blower compartment access panel.
NOTE - Some soaps used for leak detection are corro
sive to certain metals. Carefully rinse piping thoroughly
after leak test has been completed.
14 - Refer to instruction on verifying gas and electrical con
nections when re-establishing supplies.
15 - Follow lighting instructions to light and operate fur
nace for 5 minutes to ensure that heat exchanger is
clean and dry and that furnace is operating properly.
16 - Replace access panel.
Planned Service
A service technician should check the following items dur
ing an annual inspection. Power to the unit must be shut off
for safety.
Fresh air grilles and louvers (on the unit and in the room
where the furnace is installed) - Must be open and unob
structed to provide combustion air.
Burners - Must be inspected for rust, dirt, or signs of water.
Vent pipe - Must be inspected for signs of water, cracked,
damaged or sagging pipe, or disconnected joints.
Unit appearance - Must be inspected for rust, dirt, signs
of water, burnt or damaged wires, or components.
Blower access door - Must be properly in place and pro
vide a seal between the return air and the room where the
furnace is installed.
Return air duct - Must be properly attached and provide
an air seal to the unit.
Operating performance - Unit must be observed during
operation to monitor proper performance of the unit and the
vent system.
Combustion gases - Flue products must be analyzed and
compared to the unit specifications.
Problems detected during the inspection may make it nec
essary to temporarily shut down the furnace until the items
can be repaired or replaced.
Instruct the homeowners to pay attention to their
furnace. Situations can arise between annual furnace in
spections that may result in unsafe operation. For instance,
items innocently stored next to the furnace may obstruct
the combustion air supply. This could cause incomplete
combustion and the production of carbon monoxide gas.
Repair Parts List
The following repair parts are available. When ordering
parts, include the complete furnace model number listed
on
the
CSA
95AF2DFV045P24B-01. All service must be performed
by a licensed professional installer (or equivalent),
service agency, or gas supplier.
Cabinet Parts
Outer access panel
Blower access panel
Top Cap
Control Panel Parts
Transformer
Integrated control board
Door interlock switch
Blower Parts
Blower wheel
Motor
Motor mounting frame
Motor capacitor
Blower housing cutoff plate
Heating Parts
Flame Sensor
Heat exchanger assembly
Gas manifold
Combustion air inducer
Gas valve
Main burner cluster
Main burner orifices
Pressure switch
Ignitor
Primary limit control
Flame rollout switches
Page 48
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