Bradford-White Corp U1TW40S*FRN ユーザーズマニュアル
Page 20
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 unsta-
ble pilot flame are:
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 unsta-
ble 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. After 5 minutes of operation the
burner screen will become radiant and the flame will soften and turn or-
ange. If the burner screen does not become radiant after 5 minutes of op-
eration it must be cleaned (see burner cleaning procedure below).
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 or-
ange. If the burner screen does not become radiant after 5 minutes of op-
eration it must be cleaned (see burner cleaning procedure below).
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
TTW (water heater)
power cord
Outer door
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