Bradford White ECO-DEFENDER U130T*FRN Service Manual page 16

Gas Control & Thermal Well Removal From Water Heater
Step 1. Turn the gas control knob to the
"OFF" position.
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. Turn the gas control knob to the "OFF" position.
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)
Insert tool from
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". Hold control in position and remove tool. Lift straight up on control to
remove completely from Thermal Well.
16
Service tool shown
inserted in to back
of control
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.
Page 16
SERVICE PROCEDURE ED-V
Gas Control Replacement Thermal
Well and Chamber Door Sensor
Testing and Replacement
Gas Control
Thermal
Well
View from back of
control for clarity