Bradford White UDH-75T-50FR-3N - Manual (Page 21)

SERVICE PROCEDURE VI
Burner Operation Inspection, Adjustment
Cleaning and Replacement
21
The Bradford White
At periodic intervals (not more then 6 months) a visual inspection should be made of the main burner for proper operation
and to insure no debris is accumulating.
Main burner should light smoothly from pilot and burn with a blue flame with a minimum of yellow tips. After 5 minutes
of operation the burner screen will become radiant and the flame will soften and turn orange. If the burner screen does not
become radiant after 5 minutes of operation it must be cleaned (see burner cleaning procedure below).
Main burner must be free from any debris accumulation that may effect burner operation (see burner cleaning procedure
below).
MAIN BURNER: Inspection,
Cleaning and Replacement
DANGER
Under no circumstances shall flammable materials be used or stored in the vicinity of the water heater. With
the inner door removed the Bradford White Defender Safety System will be inactivated. If flammable vapors
are present, a fire or explosion may result causing property damage, personal injury or death.
WARNING
Inner door and burner components may be HOT when performing this operation. Take
necessary precaution to prevent personal injury.
BURNER CLEANING
Step 1. Remove burner and inner door assembly per SERVICE PROCEDURE I, steps 1 through 9.
Step 2. Thoroughly inspect burner screen and burner venturi and remove any loose debris accumulation. Inspect
burner screen for any openings larger than the normal screen openings.
Step 3. Use compressed air and/or a vacuum to remove any scale or other debris accumulation from the burner screen
and venturi.
Burner Venturi
Burner Screen
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