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Section 18 - Service / Maintenance
Turbulator 1/4” max. from
end of the tube
Pre-heater Assembly
adjustment screw
Ignitor Replacement / Adjustment
1.
Disconnect power to the boiler.
2
.
Remove the pre-heater assembly from
the burner housing. Disassemble and
clean all parts as instructed on pages
34-37.
3.
Using a 7/16" wrench, carefully remove
the one-piece ignitor from the air pre-
heater.
4.
Install a new one piece ignitor
(P/N 3730) to the top of the air pre-
heater.
NOTE:
The tips of the ignitor
should be 3/8" above the center of the
nozzle assembly and should extend
approximately 1/8" beyond the end of
the nozzle. The tips of the one piece
ignitor should be 1/8" apart. Adjust as
required and tighten nut on the top of
the ignitor (see illustrations for clarifica-
tion of placement).
5
.
Re-assemble pre-heater assembly (see
pages 34-37) carefully re-install the pre-
heater assembly into burner housing.
The turbulator should be approximately
1/4” from the end of the burner tube.
Adjust as required and secure the pre-
heater assembly to the burner housing
by tightening the adjustment screw on
the side of the burner housing (see
illustration).
electrodes should extend approximately
1/8” beyond nozzle tip
3/8”
1/16”
Side View
Top View
1/8”
