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PDV Series
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)
b)
c)
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 (see
burner cleaning procedure on page 16).
Burner Cleaning
Step 1.
Position gas control power switch to the
"OFF" position and unplug heater from
wall outlet.
Step 2.
Turn off gas supply to water heater.
Step 3.
Remove outer jacket door and inner door
per service procedure XIII on page 34.
Step 4.
Disconnect pilot tube (7/16" wrench) and
feedline (3/4" wrench) from gas control.
Step 5.
Disconnect igniter/flame sensor wire from
gas control.
Step 6.
Remove burner assembly from
combustion chamber.
Step 7.
Thoroughly inspect burner surface area
and burner port area and remove any
loose debris.
Step 8.
Unscrew burner from main burner orifice.
Step 9.
Remove main burner orifice from feedline
(1/2" wrench on steel burners) inspect
orifice, clean or replace if necessary.
Step 10.
Reassemble burner and reinstall into
water heater. Restore gas supply and
check for gas leaks.
Step 11.
To resume operation, follow the
instruction located on the lighting
instruction label or the lighting instruction
located in the installation and operation
manual.
16
16
16
Water heater vent is less than the allowable vent length.
Gas pressure is out of specification.
Pilot flame not fully engulfing spark/flame sensor.
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