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20
W415-1016 / B / 03.13.12
8.0 ADJUSTMENTS
8.1 VENTURI ADJUSTMENT
8.2 FLAME CHARACTERISTICS
This appliance has an air shutter that has been factory set open according
to the chart below:
Regardless of venturi orientation, closing the air shutter will cause a more
yellow flame, but can lead to carboning. Opening the air shutter will cause a
more blue flame, but can cause flame lifting from the burner ports. The
flame may not appear yellow immediately; allow 15 to 30 minutes for the
final flame colour to be established.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER!
AIR
SHUTTER
OPENING
VENTURI
BURNER
ORIFICE
49.1
VENTURI ADJUSTMENT CHART
FUEL WHVF31
NG 1/16”
LP 1/16”
Approximate
fl ame height
4” - 5”
It’s important to periodically perform a visual check of the pilot and burner fl ames. Compare them to the illustra-
tions provided. If any fl ames appear abnormal call a service person.
FLAME MUST ENVELOP
UPPER 3/8” TO 1/2” OF
FLAME SENSOR
FLAME
SENSOR
ELECTRODE
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