24
ADJUSTMENTS
PILOT BURNER ADJUSTMENT
Adjust the pilot screw to provide properly sized flame. Turn in a clockwise direction to reduce the gas flow.
OL
|
|
| F |
HI | O |
| F |
| OL | P | |
|
| ||
|
|
|
TOLIP
PILOT SCREW
FIGURE 51
FIGURE 52
VENTURI ADJUSTMENT
Air shutters have been factory set open according to the chart below:
| AIR SHUTTER |
|
|
NG | 1/4" |
LP | 7/16" |
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 minutes for the final flame colour to be estab- lished.
FIGURE 53
Air shutter adjustment must only be done by a
qualified installer!
VENTURI
COVER
FIGURE 54
To access the air shutter, remove the two screws that se- cure the cover to the air housing, taking care not to dam- age the gasket.
