Bradford White UDH-75T-50FR-3N - Manual (Page 6)

The Bradford White SERVICE PROCEDURE I
Inner Door/Gasket Removal, Inspection
Replacement and Reinstallation
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Inner Door Removal Procedure
Step 1. Rotate set point knob of the gas control to the “OFF” position.
Step 2. Turn off the gas supply to the water heater
Step 3. Remove the outer door.
Step 4. Remove the four (4) ¼” hex drive screws holding the
right side inner door in place
Step 5. Remove the three (3) ¼” hex drive screws holding the
left side burner door in place.
Step 6. Disconnect the pilot tube from the gas control using a
7/16" wrench. Remove the main burner feedline from
the gas control with a ¾” wrench.
Step 7. Disconnect the spark igniter wire from
the gas control.
Step 8. Remove the burner assembly from the combustion chamber.
Step 9. Fully inspect burner and inner door gaskets for the following:
>Tears >Other imperfections that will inhibit proper seal
>Missing Material >Gasket adhesion to inner door
>Cracks >Material left on combustion chamber (around opening)
>Dirt or debris
If the gasket is not affected by any of the above, gasket replacement is not required. If replacement is
required, proceed to Inner Door Gasket Replacement Procedure.
¼” Hex Drive Screws Right
Side Inner Door
¼” Hex Drive Screws at Flange
Area of Inner Door
¼” Hex Drive Screws on Left
Side Inner Door
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