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WARNING: The ability to properly perform maintenance on this equipment requires certain expertise, mechanical
skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other
than those procedures recommended in the User's Manual. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN
POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS PERSONAL INJURY, OR DEATH.
WARNING: Before performing any service functions, unless operations specifically require power to be on, make sure
all utilities are turned off upstream of appliance. Failure to comply with this warning will cause a fire hazard and/or bodily
harm.
WARNING: To avoid personal injury, make sure the electrical supply power is off before servicing.
PROCEDURE 1—GENERAL
In order to keep furnace in good operating condition and to maintain it's warranty, furnace MUST be serviced on an annual basis. This servicing
includes a nozzle change, burner inspection, 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 cleaning and vacuuming of heat exchanger tubes and possibly 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 gaskets 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.
PROCEDURE 2—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 nozzle MUST be replace once a year.
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.
CLEANING SECONDARY HEAT EXCHANGER AND FLUE PIPE ONLY
If cleaning of only the secondary heat exchanger tubes and flue pipe in 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 for 075–155 size units, or Fig. 5 for 210 size unit).
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.
1
2
1
1
2
2
60 Sec
90 Sec
DELAY OFF DIP SWITCH SETTINGS
Fig. 3–Fan Off Time DIP Switch Settings
CARE AND MAINTENANCE
—11—
1
1
2
2
1
2
120 Sec
150 Sec
A95115
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