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PILOT/ELECTRODE 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 (3/8" wrench), pilot tube (7/16" wrench),
and feedline (¾" wench) from combination thermostat/gas valve.
NOTE: Feedline nut for natural gas control
uses right hand threads, LP control uses left hand thread.
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 (¼" drive tool)
Step 8. Inspect pilot for the following:
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 pilot must be replaced.
Step 9. Inspect pilot orifice:
a) Remove ½" 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
F
or White Rodgers Control,
d
epress knob slightly and rotate
clockwise to the “OFF” position.
F
or Robertshaw Control, rotate
k
nob clockwise to the “OFF”
p
osition.
Pilot Orifice
Feedline
Nut
SERVICE PROCEDURE RG-III
Pilot Assembly Inspection, Cleaning and Replacement