18
Section: START UP BURNER/SET COMBUSTION
CENTER WHEEL FOR EQUAL
DISTANCE FROM HOUSING SIDES
Perform Regular Maintenance
Annual Professional
Service Required
Tampering with or making
incorrect adjustments could lead to
equipment malfunction and result in
asphyxiation, explosion or re.
y DO NOT TAMPER WITH THE UNIT OR CONTROLS
- CALL YOUR QUALIFIED SERVICE TECHNICIAN
OR SERVICE PERSONNEL.
y To ensure continued reliable operation, a qualied
service technician must service this burner annually.
y More frequent service intervals may be required in
dusty or adverse environments.
y Operation and adjustment of the burner requires
technical training and skillful use of combustion test
instruments and other test equipment.
□ Replace the oil supply line lter. The line lter cartridge
must be replaced to avoid contamination of the fuel unit
and nozzle.
□ Inspect the oil supply system. All ttings should be leak-
tight. The supply lines should be free of water, sludge
and other restrictions.
□ Remove and clean the pump strainer if applicable.
□ Replace the nozzle with the exact brand, pattern, gph
ow rate and spray angle..
□ Clean and inspect the electrodes for damage, replacing
any that are cracked or chipped.
□ Check electrode tip settings. Replace electrodes if tips
are rounded.
□ Inspect the igniter spring contacts.
□ Clean the cad cell lens surface, if necessary.
□ Inspect all gaskets. Replace any that are damaged or
would fail to seal adequately.
□ Inspect the combustion head and air tube. Remove any
carbon or foreign matter. Replace all damaged units
with exact parts.
□ Clean the blower wheel, air inlet, air guide, burner
housing and static plate of any lint or foreign material.
□ If motor is not permanently lubricated, oil motor with a
few drops of SAE 20 nondetergent oil at each oil hole.
DO NOT over oil motor. Excessive oiling can cause
motor failure.
□ Check motor current. The amp draw should not exceed
the nameplate rating.
□ Check all wiring for secure connections or insulation
breaks.
□ Check the pump pressure and cutoff function.
□ Check primary control safety lockout timing.
□ Check ignition system for proper operation.
□ Inspect the vent system and chimney for soot
accumulation or other restriction.
□ Clean all ue passages and ue pipe. Replace
corroded or damaged pipes.
□ Clean the appliance thoroughly according to the
manufacturer’s recommendations.
□ Check the burner performance. Refer to the section
“Set combustion with test instruments”.
□ It is good practice to make a record of the service
performed and the combustion test results.
Shutting the Burner Off
ALWAYS KEEP THE FUEL
OIL SUPPLY VALVE SHUT
OFF IF THE BURNER(S) IS SHUT DOWN FOR AN
EXTENDED PERIOD OF TIME.
Turn off all electric power to the burner.
Note: There could be more than one disconnect switch.
Replacing the blower wheel:
When replacing the blower wheel, insure that the wheel
is centered between the two sides of the burner housing
as shown below.
─ If the draft level has changed, recheck
the smoke and C
O
2
levels and readjust
the burner, if necessary
4. Once combustion is set, tighten all fasteners on air
band, air shutter and escutcheon plate.
5. Start and stop the burner several times to ensure
satisfactory operation. Test the primary control
and all other appliance safety controls to verify
that they function according to the manufacturer’s
specications.
Figure 10 – Blower Wheel Assembly
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