PDX SERVICE PROCEDURE VI
Gas Control & Thermal Well Testing
and Replacement
Gas Control & Thermal Well Removal From Water Heater
Step 1. Position gas valve pow er switch to the “OFF”
position and Unplug Heater from power sup ply.
Step 2. Drain heater to a point below the gas
control level.
Step 3. Turn off gas supply to water heater and
disconnect gas piping from gas control.
Step 4. Disconnect wire harnesses and burner assembly
from gas control.
Step 5. Remove gas control & ther mal well by rotating flats o f Thermal Well counter clockw ise (1-5/16"wrench).
Gas Control
Thermal
Well
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Gas Control Removal From Thermal Well
Step 1. Position gas control p ower switch to the “OFF” po sition and unplug water he ater from power supply.
Step 2. Turn off gas supply to water heater and disconnect gas piping from gas control.
Step 3. Disconnect wire harnesses & burnerassembly from gas control.
Step 4. Using gas control serv ice tool (239-45991-00) a vailable from your BWC par ts supplier, Insert tool into
back of gas control (see photos below)
Follow the steps below allows removal gas control from thermal well without
removing thermal well from tank.
Step 5. Pivot tool towards heater as far as possible (see photo below). Lift straight up on gas control. The
control should mov e about 1/8". Hold cont rol in position and rem ove tool. Lift straight up on control to
remove completely from Thermal Well.
Service tool shown
insertedin to back
of control
Insert tool from
back of control
View from backof
control for clarity
With service tool inserte d, pivot tool back towards water
heater as faras possible. Liftstraight up on control,
control will move 1/8". Remove tool and continue to lift
straight up on cont rol to remove from Thermal Well.
PDX Series
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