Burner Inspection, Cleaning, & Replacement - Bradford White UPV Series Service Manual

UPV Service Procedure I – Burner Operation Inspection, Cleaning, and
Replacement
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.
Pilot flame should be stable, some causes for an unstable pilot flame are:
a. Water heater vent is less than the
allowable vent length.
b. Gas pressure is out of specification.
c. Pilot flame not fully engulfing
spark/flame sensor.
Main burner should light smoothly from pilot and
burn with a blue flame with a minimum of yellow
tips. Main burner must be free from any debris
accumulation that may affect burner operation.
Burner Cleaning
Step 1. Position the gas control power switch
to the "OFF" position and unplug the
heater from the wall outlet.
Step 2. Turn OFF gas supply to the water
heater.
Step 3. Remove outer jacket door.
Step 4. Disconnect pilot tube (7/16" wrench)
and feedline (¾" wrench) from gas
control.
Step 5. Disconnect igniter/flame sensor wire
from gas control.
Step 6. Remove the (4) ¼" hex drive screws
holding the right side inner door in
place.
Step 7. Remove the (3) ¼" hex drive screws
holding the left side burner door in
place.
Step 8. Remove burner assembly from
combustion chamber.
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