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20
W415-0847 / B / 03.17.11
8.0 ADJUSTMENTS
8.1 VENTURI ADJUSTMENT
This model has an air shutter that has been factory set open according to the chart below:
Closing the air shutter will cause a more yellow fl ame, but can lead to carboning.
Opening the air shutter will cause a more blue fl ame, but can cause fl ame lifting
from the burner ports. The fl ame may not appear yellow immediately; allow 15
to 30 minutes for the fi nal fl ame color to be established.
A
IR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER!
NOTE: It is important that the venturi sits down tight on the orifi ce.
49.3
VENTURI
BURNER
AIR
SHUTTER
OPENING
AIR SHUTTER OPENINGS
LP 3/16” DIA
NG 1/16” DIA
8.2 FLAME CHARACTERISTICS
It is important to periodically perform a visual check of the burner fl ame. Compare them
to the illustration provided.
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