On/Off Switch; Ignition Module; Burner Orifice - L.B. White I17 Owner's Manual And Installation Instructions

1. Disconnect the heater from its electrical supply.
2. Close fuel supply valves to heater..
3. Remove filter and filter sleeve (if applicable). Remove
the screws that secure the control box cover to the
control box and lift cover from box.
4. Disconnect the electrical leads from the ON/OFF
switch.
5. Using the appropriate wrench, remove the rubber boot
from the ON/OFF switch. See Fig. 7.
6. Remove the switch from the control box.
7. To re-assemble, reverse these procedures.
ATTENTION
When removing or replacing the ignition control module
it is important to handle the module at the edges of the
board. Do not touch or allow any contact to the module
components. Doing so may damage the electronics of
the module.
1. Disconnect heater from its electrical supply.
2. Close fuel supply valves to heater.
3. Remove dust filter and filter sleeve.
4. Remove the screws that secure the control box cover
to the control box and lift cover from box.
5. Disconnect all electrical leads from the ignition
control terminals.
1. Close fuel supply valves to the inlet of heater.
2. Disconnect the heater from its electrical supply.
3. Remove the screw which secures the venturi neck
and valve ground lead to the venturi tube.
4. Remove injector body with gas control from venturi
tube.
5. Using a 6 mm hex nut driver, remove the orifice head
from the orifice body by turning counter-clockwise.
6. Use compressed air to clean the orifice hole. Do not
push or poke any small file, broach, etc. through
orifice holes. Doing so may enlarge the hole, causing
combustion problems. Reinstall orifice head back
into the orifice body. Make sure you do not
overtighten the orifice as overtightening can strip the
threads in the injector body.
FIG. 7
6. Disconnect high voltage ignition lead.
7. Remove the screws which secure the ignition control
module to the control box. See Fig. 8.
8. To re-assemble, reverse these procedures.
FIG. 8
IGNITION LEAD
IGNITION CONTROL
MOUNTING SCREWS
FIG. 9
GROUND LEAD
ADAPTER
GAS CONTROL
INLET
VALVE
BUSHING
ADAPTER

ON/OFF SWITCH

BOOT
SWITCH

IGNITION MODULE

BURNER ORIFICE

VALVE GROUNDING AND
ATTACHMENT SCREW
BURNER ORIFICE
VENTURI
NECK
14