Bradford White TW4-75S-76B-3X - Manual (Page 29)

Gas Control Assembly to Thermal Well
(For water heaters with serial
numbers that begin with “J” or sooner.)
Step 6. Reconnect wire harnesses to gas control
per the illustration.
Step 7. Reconnect gas piping to gas control.
Restore gas supply and check for gas
leaks.
Step 8. To resume operation, follow the
instruction located on the lighting
instruction label or the lighting instruction
located in the installation and operation
manual.
5 pin
blower harness connection
3 pin
thermal well connection
Ground Wire
connection
Simulated Resistive
device
Igniter/sensor
connection
Thermal well flange
slots
Gas control Tabs
TTW SERVICE PROCEDURE VI
Gas Control & Thermal Well Testing
and Replacement
Page 29
24
25
Step 1. Install threaded end of thermal well into tank. Be sure
thermal well flange is positioned as shown in photo 24
for proper control alignment.
Step 2. Route wire leads back into relief opening.
(see photo 24)
Step 3. Align slots located on thermal well flange with tabs
located on back of gas control (see photos 24 & 25)
Step 4. Carefully push control back onto thermal well flange
as far as possibletowards water heater. Slide control
down to lock into position.
Step 5. Install burner and connect pilot and feedline to gas
control.
Route wires
through relief
opening
29