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U Thermostat Replacement
(Refer to illustration 17)
1. Remove sub assembly. (Refer to Section S)
2. Remove the two screws at the top of the thermostat
that go through to hold the intake pipe mounting
flange and remove the intake pipe.
3. Carefully coil the thermostat tube close to the thermo-
stat and safety solenoid.
4. Holding the body of the safety solenoid with a wrench
or vise, unthread thermostat from nipple.
5. To install new thermostat, thread thermostat onto
nipple and tighten. NOTE: If nipple has been
removed with the old thermostat, replace nipple
into safety solenoid. Make sure intake pipe
mounting flange holes are aligned from top to
bottom.
6. Place intake pipe/mounting flange on bottom of
thermostat. Insert the two screws through the top
and secure.
7. Install sub assembly. (Refer to Section T)
V Control Solenoid Valve Re-
placement
(Refer to illustration 17)
1. Remove sub assembly (Section S), and intake pipe
(Section U Step #2).
2. Remove solenoid plug and retain for new installation.
3. Unthread street elbow assembly.
4. Unthread control solenoid valve from T-fitting, and
remove.
5. Thread new valve onto T-fitting, making sure the
valve is in vertical alignment with the safety solenoid
valve.
6. Thread street elbow assembly to control valve,
making sure street elbow assembly is in vertical
alignment with the other offset pipe.
7. Replace solenoid plug.
8. Replace intake pipe/mounting flange. (Refer to
Section U Step #6)
9. Replace sub assembly. (Refer to Section T)
W Safety Solenoid Valve
Replacement
(Refer to illustration 17)
1. Remove sub assembly (Section S), and
thermostat (Section U).
2. Remove solenoid plug and retain for new
installation.
3. Unthread safety solenoid valve from T-fitting
and remove.
4. To replace, thread safety solenoid valve onto
T-fitting making sure valve is in vertical
alignment with control solenoid valve.
5. Replace solenoid plug.
6. Replace thermostat (Section U), and sub
assembly (Section T).
X Intake Pipe Replacement
(Refer to illustration 17)
1. Remove sub assembly. (Refer to Section S)
2. Remove intake pipe from thermostat. (Refer
to Section U Step #2)
3. Unthreaded intake pipe mounting flange and
remove.
4. Remove pilot flame filter assembly.
5. To install new pipe, replace pilot flame filter
assembly checking for proper alignment.
6. Thread intake pipe mounting flange to intake
pipe, checking for proper orientation.
7. Attach pipe to thermostat. (Refer to Section
U Step #6)
8. Replace sub assembly. (Refer to Section T)
Y Pilot Flame Filter Assem-
bly Replacement
(Refer to illustration 17)
1. Using a 7/16” wrench, remove both com-
pression sleeves.
2. Unthread pilot flame filter assembly from
intake pipe.
3. Reverse this procedure to install new pilot
flame filter assembly.