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WARNING: Before performing any service functions,
unless operations specifically require power to be on,
make sure all utilities are turned off upstream of appli-
ance. Failure to comply with this warning will cause a fire
hazard and/or bodily harm.
WARNING: To avoid personal injury, make sure elec-
trical supply power is off before servicing.
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I. GENERAL
In order to keep this furnace in good operating condition and to
maintain its warranty, the furnace MUST be serviced on an annual
basis. This servicing includes a nozzle change, a burner inspection,
a visual check of tube passages through flue outlet and cleanout
ports, and a visual inspection of combustion chamber when burner
is removed.
Depending on above inspection, service could also include a
cleaning and vacuuming of heat exchanger tubes and possibly the
heat exchanger drum section.
Removal of any heat exchanger components which are sealed by
gaskets requires replacement of gasket.
WARNING: Failure to replace any heat exchanger gas-
kets with new gaskets when any heat exchanger plates or
covers are removed could lead to heat exchanger leakage,
sooting, and/or a hazardous condition capable of causing
bodily harm.
This furnace should never be operated without air filter(s).
Disposable filters should be replaced at least once a year. If
equipped to provide cooling, filters should be replaced a minimum
of twice a year. Permanent filters should be cleaned at least twice
a year.
ALWAYS KEEP MAIN OIL VALVE TURNED OFF IF
BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF
TIME.
II. OIL BURNER
Contact your service technician for service.
Lubricate burner motor with SAE 10 oil. Once each year, pour 2
teaspoons of oil slowly into each oil cup.
To maintain proper performance, oil burner nozzle MUST be
replaced once a year.
The procedure for nozzle installation and/or replacement is out-
lined in oil burner instruction manual which came with furnace.
For ease of maintenance, the oiling procedure for burner motor, as
outlined in burner manual, should be performed at this time.
After replacement of nozzle, burner should be adjusted in accor-
dance with Combustion Check section of the instruction.
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III. HEAT EXCHANGER AND FLUE PIPE
Ordinarily, it is not necessary to clean heat exchanger or flue pipe
every year but 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
If cleaning of only the secondary heat exchanger tubes and flue
pipe is necessary, 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. Disconnect flue pipe and remove flue elbow.
3. Unscrew wing clamp nuts and remove cleanout port covers.
(See Fig. 4.)
CLEANOUT
PORTS
FLUE
ELBOW
CLEANOUT PORT
COVER & CLAMP
ASSEMBLY
Fig. 4—Removing Cleanout Port Covers
4. Clean secondary tubes and flue pipe with a stiff brush and
vacuum cleaner.
5. Before reinstalling cleanout port covers, the gasket on each
cover MUST be replaced. Use cleanout port gasket kit Part
No. 20196201.
6. Reinstall covers and tighten in place making sure that
covers are properly seated over ports and gasket has sealed
opening. (See Fig. 5.)
UPPER VESTIBULE
PANEL
CLEANOUT
PORT COVER
WING
CLAMP
NUT
Fig. 5—Reinstalling Cleanout Port Covers
WARNING: Failure to replace cleanout port cover gas-
kets, 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.
—9—
FLUE BOX
A96307
CLEANOUT
COVER
GASKET
CLEANOUT
COVER
CLAMP
BRACKET
INSULATION
A96308
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