33
9. Clean residue from furnace using a vacuum cleaner.
10. Replace the parts removed in the previous steps in reverse
order.
11. Turn on electrical power and gas to furnace. Check for leaks
and proper unit operation.
12. Severe heat exchanger fouling is an indication of an
operational problem. Perform the checks listed in
Section
XIV, Startup Procedure and Adjustments
to reduce the
chances of repeated fouling.
XX. INTERNAL FILTER REMOVAL
Internal filters are an accessory item and are not included with your
furnace. For further details, see your distributor.
B
OTTOM
R
ETURN
R
EMOVAL
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.
4. Slide filter forward and out.
5. Replace filter by reversing the procedure.
B
LOWER
C
OMPARTMENT
R
EMOVAL
1. Turn OFF electrical power to furnace.
2. Remove blower compartment door.
3. Grasp lower portion of filter and lift up.
Front of Furnace
Blower
Grab Here
And Lift
F
ilt
e
r
Front of Furnace
Blower
4. Angle filter toward the blower until filter clears bottom rail.
5. Lower filter down and pull outward.
Front of Furnace
Blower
Front of Furnace
Blower
6. Replace filter by reversing procedure.
XXI. BEFORE LEAVING AN INSTALLATION
•
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.
XXII. REPAIR & REPLACEMENT PARTS
•
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 Orifice
Blower Mounting Bracket
Propane Gas Orifice
Blower Cutoff
Igniter
Blower Housing
Flame Sensor
Capacitor
Rollout Limit Switch
Heat Exchanger
Primary Limit Switch
Recuperator Coil
Auxiliary Limit Switch
Coil Front Cover
Pressure Switch
Integrated Control Module
Induced Draft Blower
Transformer
Door Switch
