Burner Maintenance; Burner Inspection; Burner Cleaning Procedure - Bradford White D4403S*F(BN Service Manual

Burner Inspection

At periodic intervals (every 6 months), a visual inspection should be made of the pilot
and main burner for proper operation and to assure no debris is accumulating. The
pilot flame should be stable. Some causes for an unstable pilot flame are:
a) Gas pressure is out of specification.
b) Pilot flame not fully engulfing spark/flame sensor.
The main burner should light smoothly from the pilot and burn with a blue flame with a
minimum of yellow tips.
Steel burner models self adjust air to gas ratio mixture and do not have an adjustable
air shutter. The main burner must be free from any debris accumulation that may
effect burner operation (See Burner Cleaning Procedure on page 15).

Burner Cleaning Procedure

Step 1. Move the gas control power switch to the "OFF"
position.
Step 2. Unplug the water heater from the wall outlet.
Step 3. Turn off the gas supply to the water heater.
Step 4. Remove the outer door.

Burner Maintenance

Gas control power
switch
Damper (water
heater) power cord
Outer door
Page 15
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