20
ADJUSTMENTS
PILOT BURNER ADJUSTMENT
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A
QUALIFIED GAS INSTALLER!
Adjust the pilot screw to provide properly sized flame. Turn in a clockwise direction to reduce the gas flow.
FIGURE45 | FIGURE47 |
FIGURE46
VENTURI ADJUSTMENT
VENTURI
| MODEL BGNV40 |
NG | 1/4" |
LP | 7/16" |
FIGURE48
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; al- low 15 to 30 minutes for the final flame colour to be estab- lished.
