TTW SERVICE PROCEDURE VI

Gas Control & Thermal Well Testing

and Replacement

Gas Control & Thermal Well Removal From Water Heater

 

 

Gas Control

Step 1.

Position gas valve power switch to the “OFF”

Thermal

 

position and Unplug Heater from power supply.

Well

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 & thermal well by rotating flats of Thermal Well counter clockwise (1-5/16"wrench).

Gas Control Removal From Thermal Well

Follow the steps below allows removal gas control from thermal well without removing thermal well from tank.

Step 1. Position gas control power switch to the “OFF” position and unplug water heater from power supply.

Step 2. Turn off gas supply to water heater and disconnect gas piping from gas control.

Step 3. Disconnect wire harnesses & burner assembly from gas control.

Step 4. Using gas control service tool (239-45991-00) available from your BWC parts supplier, Insert tool into back of gas control (see photos below)

View from back of control for clarity

Insert tool from

back of controlService tool shown inserted in to back

of control

Step 5. Pivot tool towards heater as far as possible (see photo below). Lift straight up on gas control. The control should move about 1/8". At this point, remove tool not allowing the control to fall back. With tool removed, lift straight up on control to remove completely from Thermal Well.

With service tool inserted, pivot tool back towards heater as far as possible. Lift straight up on control, control will move 1/8". Remove tool and continue to lift straight up on control to remove from Thermal Well.

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Bradford-White Corp TW450S65F Gas Control & Thermal Well Removal From Water Heater, Gas Control Removal From Thermal Well

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