L.B. White I-40 Infraconic Ignition - Manual (Page 18)

1188
LEAD END OF THERMOCOUPLE
THERMOFUSE
5/16"
COVER
UPPER NUT
THERMOCOUPLE
LEAD
COVER
LOWER NUT
THERMOCOUPLE INSTALLED
UPPER RETAINING NUT
KEY HOLE SLOT
COVER
THERMOCOUPLE INSTALLED
INJECTOR TUBE
THERMOCOUPLE BODY
RETAINING NUT
COVER
THERMOCOUPLE TIP
LOCATION HOLE IN PLATE
1/2 IN TO 9/16 IN
FINISHED
THERMOCOUPLE
POSITION
1. Remove the thermocouple at the pilot gas control
valve. See Fig. 20.
2. Loosen the thermalfuse retaining clip screw.
See Fig. 20.
3. Loosen upper retaining nut on thermocouple.
See Fig. 21.
4. Remove the thermocouple, with nuts and cover, from
the heater assembly.
5. Transfer nuts and cover to replacement
thermocouple. Position as shown in Fig. 22.
6. Position the thermalfuse under the retaining clip and
tighten the screw.
7. Install the thermocouple. Angle the thermocouple tip
to allow passage through the keyhole slot and into the
thermocouple location hole of the burner plate. Pull
up on the thermocouple lead so the lower nut is tight
against the inside of the heater housing. Tighten
upper nut against the housing. See Fig. 23.
8. The installed finished position of the thermocouple is
1/2 - 9/16 inch from the top edge of thermocouple to
the heater housing. See Fig. 23.
9. Thread the nut on thermocouple into gas control
valve. Tighten finger tight and snug in place. DO NOT
OVERTIGHTEN.
FIG. 20
FIG. 21
FIG. 22
FIG. 23
THERMOCOUPLE
SCREW
RETAINING
CLIP
THERMOCOUPLE
INJECTOR
BODY THERMAL
FUSE
VEN
TUR
I TU
BE