Lennox Hearth Gas Conversion Kit FGCK User Manual
Page 2
2
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Electronic Appliances
Step 7. Honeywell Electronic Valves - See
Figure 7. Remove the slotted cap screw, o-
ring, pressure-regulating adjusting screw and
spring. Retain all parts for possible later use.
Install new components from this kit. Black
cap and red spring for propane gas units.
Silver cap and stainless steel spring fro natural
gas units.
Figure 6
Figure 7
Note: If the ignitor assembly is damaged, a replacement kit is available, order Catalog Number 87L54.
Spring
Adjusting
Screw
Slotted
Cap
P
S
I
OFF
I
ON
CONTROL
IG
N
IT
E
Test
Port
Retaining
Clip
Ignitor
Assembly
Pilot
Assembly
Pilot
Orifice
Flare Nut
Figure 3
Pilot
Orifice
Figure 2
Flip Cap
Thread
Protector
HONEYWELL
VALVE
Figure 4
³⁄₈" Min
(9 mm)
Hood
Pilot
Nozzels
Ignitor Rod
Step 6. Refer to
Figure 3 and remove the pilot
hood assembly to access the hexed pilot ori-
fice. Using a (4mm) Allen wrench, remove and
replace the orifice with the one provided with
this kit.
Figure 4 shows the pilot reas-
sembled, with proper flame.
Figure 5 shows
a typical pilot to burner relationship.
Step 8. Refer to
Figure 6 and replace the pilot
orifice as follows: Remove the ignitor assem-
bly retainer clip, and carefully remove the
ignitor assembly. Exercise extreme care to
prevent damage to or breakage of the ignitor
assembly. Remove the screw securing the
pilot assembly to its mounting bracket. Back
off the flare nut at the end of the pilot gas line
to free the pilot assembly from the gas line.
Remove the pilot orifice and replace it with the
one provided with this conversion kit. Rein-
stall the pilot assembly by reversing the steps
detailed here.
When reinstalling the ignitor assembly, use
extreme care to prevent damage and break-
age. Do not apply any leverage to the ignitor
assembly while restoring the retainer clip to
its original position.
Pilot
Burner
Figure 5
(Millivolt LMBV 36 Shown)