6.Remove the recuperator coil turbulators individually by slowly pulling each turbulator forward firmly.
7.Clean the recuperator coil tubes using a long handle wire brush, such as a gun cleaning brush.
8.Clean the primary heat exchanger tubes using a wire brush attached to a length of high grade stainless steel cable, such as drain cleanout cable. Attach a variable speed reversible drill to the other end of the cable. Slowly rotate the cable with the drill and insert it into one of the heat exchanger tubes. While reversing the drill, work the cable in and out several times to obtain sufficient cleaning. Repeat for each tube.
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.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.
XXI. 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 | Coil Front Cover |
Auxiliary Limit Switch | Integrated Control Module |
Pressure Switch | Transformer |
Induced Draft Blower |
|
Door Switch |
|
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