L.B. White I-40 Infraconic Spark Ignition - Manual (Page 15)

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Handle the module at the edges of the board
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Don’t touch or allow contact to the module
components, otherwise damage may occur.
1. Remove control box screws and cover.
2. Disconnect all electrical leads from the ignition
control terminals.
3. Disconnect high voltage ignition cable.
4. Remove the four ignition control module mounting
screws. See Fig. 10.
FIG. 10
1. Remove control box screws and cover.
2. Disconnect the electrical leads from the ON/OFF
switch.
3. Remove the rubber boot from the ON/OFF switch.
See Fig. 9. Remove the switch from the control box.
FIG. 9
ON/OFF SWITCH
14
IGNITION MODULE
BOOT
1. Remove valve grounding and air housing attachment
screw. See Fig.11.
2. Remove air housing with gas control from venturi tube.
3. Using a 6 mm hex nut driver, remove the orifice. See
Fig.12
4. Clean or replace the orifice. Reinstall orifice into the air
housing. Do not overtighten the orifice as threads can
be stripped.
FIG. 12
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Orifice size is stamped on the flat of orifice hex,
indicating size in millimeters. Sizes are: LP gas: 94
(0.94 mm), Natural gas: 1.2 (1.2 mm)
BURNER ORIFICE
SCREW
AIR HOUSING
FIG. 11
IGNITION
CABLE
SCREWS
ORIFICE
UPPER HOLE IN AIR
HOUSING IS PLUGGED