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SERVICE PROCEDURE RG-III
Pilot Assembly Inspection,
Cleaning and Replacement
Pilot/Electr
ode Assembly Inspection,
Cleaning and Replacement
Step 1. Turn off gas supply to water heater. Rotate knob of combination
thermostat/gas valve to “OFF” position.
Step 2. Remove outer jacket door.
Step 3. Remove right side of inner door per SERVICE PROCEDURE RG-I,
steps 3a through 3c.
Step 4. Disconnect thermocouple from combination thermostat/gas valve (3/8"
wrench). Disconnect pilot tube from combination thermostat/gas valve
(7/16" wrench). Disconnect feedline from combination thermostat/gas valve
(3/4" wench).
Step 5. Disconnect Piezo ignition wire from Piezo igniter.
Step 6. Remove burner assembly from combustion chamber.
Step 7. Remove pilot/electrode assembly from feedline (1/4" drive tool).
Step 8. Inspect pilot for the following: (not required if replacing with new pilot)
a) Primary air openings for blockage. Must be free from any debris
(dirt, lint, etc).
b) Kinks or cracks in the pilot tube. If found, the tubing must be replaced.
Step 9. Inspect pilot orifice: (not required if replacing with new pilot)
a) Remove 1/2" nut from bottom of pilot assembly.
b) Remove pilot tube and pilot orifice.
c) inspect pilot orifice for blockage, must be cleaned or replaced.
Step 10. Install pilot/electrode assembly to feedline, secure with screw from step 7.
Step 11. Re-Install burner assembly into combustion chamber, connect feedline, pilot tube and thermocouple to
combination thermostat/gas valve.
Step 12. Install inner door per SERVICE PROCEDURE RG-I, step 4 through 13.
Step 13. To resume operation follow the instructions located on the lighting instruction label or the lighting
instructions located in the installation and operation manual.
Primary Air
Opening