The procedure for nozzle installation and/or replacement is outlined in Oil Burner Instruction Manual which came with the furnace. For ease of
maintenance the oiling procedure for burner motor, as outline in burner manual, should be performed at the same time.
After replacement of nozzle, burner should be adjusted in accordance with Combustion Check section of the instruction.
PROCEDURE 3—HEAT EXCHANGER AND FLUE PIPE
Ordinarily, it is not necessary to clean heat exchanger or flue pipe every year; however, it is NECESSARY to have your service technician check
unit before each heating season to determine whether cleaning or replacement of parts is required.
A.
Cleaning Secondary Heat Exchanger Tubes and Flue Pipe Only
1. Turn off all oil and electrical supplies upstream of furnace.
CAUTION: If furnace has been in operation, some surfaces may be hot. Allow time for unit to cool down.
2. Disconnect flue pipe and remove flue elbow.
3. For access to cleanout ports, remove blower door and filter. The 2 cleanout ports are located in the blower compartment. They protrude
through the partition and are located on the left and right of flue pipe.
4. Unscrew wing clamp nuts and remove cleanout port covers. This allows access to the tubes. (See Fig. 2.)
5. Clean secondary tubes and flue pipe with a stiff brush and vacuum cleaner.
6. Before reinstalling cleanout port covers, the gasket on each cover MUST be replaced. Use cleanout port gasket kit part no. 20196201.
7. Reinstall covers and tighten in place making sure that covers are properly seated over ports and gasketed has sealed opening. (See Fig. 3.)
WARNING: Failure to replace cleanout port cover gaskets, failure to properly seat covers over ports, and/or failure to
securely tighten wing nuts could lead to flue gas leakage. This could lead to furnace damage, oil fumes, sooting, and severe
bodily harm.
8. Reconnect flue pipe.
9. Reinstall filter and blower door.
10. Turn on power to unit and readjust burner for proper operation. Inspect cleanout ports and flue connection to make sure there are no leaks.
B.
Cleaning Both Primary and Secondary Heat Exchangers
If a more thorough cleaning is required (both primary and secondary heat exchanger sections), the following steps should be performed:
1. Turn off all oil and electrical supplies upstream of furnace.
CAUTION: If furnace has been in operation, some surfaces may be hot. Allow time for unit to cool down.
2. Remove blower door.
3. Disconnect flue pipe.
4. Remove outside flue collar.
5. Remove top rear panel.
NOTE:
Blower removal as described in Maintenance Section, Procedure 4–Blower Oiling and Removal may be desired for easier access when
cleaning with duct work attached.
6. Remove inside collar on flue pipe.
Fig. 2–Removing Cleanout Port Covers
A96310
CLEANOUT
PORTS
CLEANOUT
PORT COVER
& CLAMP
ASSEMBLY
BLOWER
DOOR
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