Air Shutter Adjustment - Natural Gas Only - Monessen Hearth iDV380NVC Installation And Operating Instructions Manual

IDV380/IDV490 Fireplace Insert
ADjuSt the AiR ShutteR
The venturi of the burner is equipped with an air shutter. The opening of the venturi has
been set at 1/4" for Natural Gas and fully open for Propane installation at sea level. The
burner on Natural Gas models may be adjusted for high altitude as follows:
•
To increase air mixture, open the shutter more. This will reduce soot formation.
Figure 36
•
To decrease air mixture, close the shutter. Flames will be more yellow.
Figure 37
28
AiR ShutteR ADjuStMeNt (NAtuRAl GAS ONly)
Figure 36 -
Push Adjustment Lip Up to Open Air Shutter
FP1940
air shutter part open
Figure 37 -
Pull Adjustment Lip to Close Air Shutter
FP1941
air shutter fully open
Air Shutter
FP1940
Air Shutter
FP1941
57D0016