23
ADJUSTMENTS
PILOT BURNER ADJUSTMENT
Adjust the pilot screw to provide properly sized flame. Turn in a clockwise direction to reduce the gas flow.
PILOT SCREW FIGURE 54
FIGURE 55
VENTURI ADJUSTMENT
Air shutters have been factory set open according to the chart below:
| AIR SHUTTER |
|
|
NG | 1/16" |
LP | 3/16" |
These settings are for the maximum horizontal vent run. Adjustment may be required depending on fuel type, vent configuration and altitude.
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 min- utes for the final flame colour to be established.
FIGURE 56
Air shutter adjustment must only be done by a
qualified installer!
VENTURI
COVER
FIGURE 57
1.Remove the front central panel to access the venturi housing.
2.Remove the 2 screws that secure the cover to the venturi housing, taking care not to damage the gasket.
