Model 301GAS burner — Instruction manual
Carlin part number MN301GAS Rev. 11/24/14
– 16 –
Where appliance instructions differ from this manual, follow the appliance instructions.
Annual start-up & service
This burner should be started and serviced at least annually
by a qualified service technician. Failure to properly maintain
and service the burner could result in severe personal injury,
death or substantial property damage.
Turn off power to appliance and close main manual gas
valve when servicing burner. See warnings on page 2 and
elsewhere in this manual regarding correct procedures.
Failure to comply could result in severe personal injury,
death or substantial property damage.
Annual start-up and service procedures
❏
Discuss burner/appliance operation with user to determine any prob-
lems that may have occurred during the previous season and to verify
user is aware of proper operation and care of the burner/appliance.
❏
Turn off power to appliance and close main manual gas valve.
❏
Remove the burner from the appliance and inspect the combustion
head assembly, ignitor electrode and flame rod (see page 8). Adjust
if necessary as described on page 8.
If the air tube or combustion head needs to be cleaned,
clean with a vacuum cleaner with brush attachment with
the combustion head assembly assembly out of the burner.
❏
Verify that the hinged ignitor cover plate is closed and the screw is
tight.
❏
Verify that the air tube flanged door is securely closed and the bolts
are tightened.
❏
Check the burner flange gasket. It must be in good condition. Replace
gasket on burner flange and mount burner in appliance, securing to
mounting studs.
❏
Perform the complete checkout procedures of pages 12 through 15,
including system inspection and checks.
6. Maintenance and service procedures
Maintenance/service procedures
Cleaning blower wheel
1. The blower wheel accumulates dust and debris from normal opera-
tion. You will need to clean the wheel blades periodically to prevent
reduction in airflow. To clean blades, remove the two bolts securing
the motor to blower housing.
2. Slide the motor out and rotate to remove and access blower wheel.
3. Use a brush and vacuum to clean each blade and the blower housing
interior.
4. Replace motor/wheel in blower housing and secure with the two bolts.
5. Push wire slack back into junction box.
Replacing blower motor or wheel
1. If either the blower wheel or motor must be replaced, remove the two
bolts securing the motor to housing.
2. Disconnect the motor wires in the burner junction box.
3. Loosen the Allen screw securing the blower to the motor shaft and
remove the wheel.
4. When assembling the replacement assembly, slide the wheel onto the
motor shaft and use feeler gauges to set a space of 1/8 inch between
the blower wheel and the motor face.
5. Replace the motor/wheel assembly in the housing, wire the motor
leads and secure the motor with the two bolts.
Motor maintenance
The motor is constructed with permanently-lubricated bearings, and re-
quires no oiling. Should you replace the original motor with another type
of motor, occasional oiling may be required, depending on motor design
and manufacturer’s recommendations.
Any time you replace a component or disassemble any part
of the burner for service/maintenance, perform a complete
operational test after reassembly to verify the burner oper-
ates correctly. Failure to verify operation could result in
severe personal injury, death or substantial property dam-
age.
