Flats of thermal
well
Gas Control Removal
Gas Control & Thermal Well Removal From Water Heater (cont’d)
Step 4. Disconnect the pilot tube using a 7/16” wrench and the main burner feedline with a 3/4” wrench from the gas control.
Pilot and main
feedlines
Step 5. Disconnect the wire harnesses and spark igniter/ flame sense wire from the gas control.
Gas control
Spark igniter/flame
sensor wire
Step 6. Remove the gas control & thermal well by rotating the flats of the Thermal Well counter clockwise using a 
Gas Control Removal From Thermal Well
Following the steps below allows for the removal of the gas control from the thermal well without removing the thermal well from the tank.
Step 1. Move the gas control power switch to the “OFF”
position.
Gas control power
switch
Step 2. Unplug the water heater from the wall outlet.
TTW (water heater)
power cord
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