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The electrode assembly consists of two electrodes and one flame sensor
probe.
The spark produced by the circuit board to the electrodes ignites
the burner after the purge cycle is completed.
The flame sensor probe
senses the heat from the burner and signals the circuit board to keep the
gas valve open.
If ignition does not occur so that the flame sensor does
not sense heat, the circuit board will shut the gas valve off within 6 to 9
seconds.
Burner Assembly
To remove the burner assembly from the control box, first remove the draft
shield assembly by opening the front door catches and unscrewing the wing
nut located on the side of the combustion air housing cover and front
screw.
See Fig. 3.
Next unscrew the manifold irom the blower wall and
remove the three (3) screws on the burner box.
MANIFOLD
Fig. 3
Pull manifold to the right until manifold clears the brass fitting.
Now
remove
burner
assembly
by
pulling
the
manifold
toward
you
and
disconnecting the electrode wires.
CAUTION:
When re-installing the burner assembly make sure the two
screws on the burner box flange are secure and not stripped.
1-11
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