Step 1. With main burner in opera tion, remove right side i nner door per SERVICE P ROCEDURE I, steps 3b & 3 c.
Be sure to maintain wire connectio n to resettable thermal switch for this adjustment procedure.
Step 2. To adjust forproper burning, loosen the air shutter nut, rotate the shutter to closethe opening in the burner,
then slowly rotate the shutter until the yellow tips disappear and the flame becomes blue. Tighten the air
shutter nut. Too much air will cause the flame to lift off the burner ports and create noisy burner operation.
Too little air (yellow tips) will result in soot formation.
Place right side inner door into proper position to confirm proper burner flame pattern andcorrect air shutter
adjustment. It may be necessary to allow the burner to operate for several minute s for burner flame to stabilize.
At periodic intervals (not more th en 6 months) a visual inspection should be made of the main burner for proper operation
and to insure no debris acc umulating.
Main burner should light smooth ly from pilot and burn with a b lue flame with a minimum of yel low tips.
Steel burner models have a self adjusting air mixtureand do not have an adjustable air shutter.Cast iron burner can have
the gas and air mixture prop erly proportioned by a djusting the air shutter on the mixer face of the m ain burner (see step 2
below).
Main burner mustbe free from any debris accumulation that may effect burner operation (see burner cleaning procedure
on page 17).
MAIN BURNER: Inspection,A djustment,
Cleaning and Replacement
CAST IRON BURNER ADJUSTMENT
DANGER
Under no circumstances shall f lammable materials be used or sto red in the vicinity of the water heater.
With the inner door removed the Bradford White Defender Safety System will be inactivated. If f lammable
vapors are present, a fire or ex plosion may result causing prop erty damage, personal injury or d eath.
Upon completion of the cast iron burner adjustment procedu re, the inner door must be replaced per
SERVICE PROCEDURE RG-1, steps 4 through 14 to reactivate Brad ford White Defender Safety Syst em.
SERVICE PROCEDURE RG-VII
Burner Operation Inspection, Adjustment
Cleaning and Replacement
WARNING
Inner door and burner components may be HOT when performing this operation. Take necessary
precaution to prevent personal injury.
Air Shutter Nut
The Bradford White
DEFENDER
Safety System®
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