Bradford White ECO-DEFENDER U130T*FRN Service Manual page 7

Inner Door Removal Procedure
Step 1. Rotate the gas control knob to the "OFF"
position.
Step 2. Remove outer jacket burner access door
Step 3. Inner Door Removal.
a) Disconnect chamber door temperature sensor wire harness from the gas valve.
b) Disconnect resettable thermal switch white wire lead (leading from gas valve). Disconnect the red wire
leading from the gas valve from the red thermopile wire.
c) Disconnect main burner feed line (¾" wrench), pilot tube (7/16" wrench) and igniter wire from gas valve.
d) Remove (2) 1/4" hex drive screws from right side inner door.
e) Remove (2) 1/4" drive screws from flange section of inner door.
f) Remove (3) 1/4" drive screws from burner door. The burner door and burner are one-piece.
g) Remove burner and inner door and inspect per step 4.
Chamber Door
Temperature Sensor
Wire Harness
Step 4. Fully inspect burner and inner door gaskets for the following:
>Tears
>Missing Material
>Cracks
>Dirt or debris
If the gasket is not effected by any of the above, gasket replacement is not required. If replacement is
required, proceed to Inner Door Gasket Replacement Procedure.
Gas Control Knob Shown In
Feed Line Nut
Pilot Nut
>Other imperfections that will inhibit proper seal
>Gasket adhesion to inner door
>Material left on combustion chamber (around opening)
Page 7
SERVICE PROCEDURE ED-I
Burner and Inner Door/Gasket Removal,
Inspection, Replacement and
Reinstallation
"OFF" Position
Chamber Door
Temperature
Sensor
¼" Hex Drive Screws at
Flange Area of Inner Door
Red Wire Lead
¼" Hex Drive Screws Right
and Left Side Inner Door
White Wire Lead
White Thermopile
Wire
Red Thermopile
Wire
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