48D0586
33
AIR SHUTTER ADJUSTMENT (NATURAL GAS ONLY)
ADJUSTING 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:
Figure 42 - Pu
ll
Down
Adjustment Knob to Open Air Shutter
Figure 43 - Pu
sh
Up
Adjustment Knob to Close Air Shutter
• To increase air mixture, pu
ll down
the
adjustment
knob
located
behind
control
panel.
This
opens
the shut-
ter
more
and
will
stop sooting.
See
Figure 42.
• To decrease air mixture, pu
sh
u
p
the adjustment knob located
behind control panel. This closes
the shutter. Flames will be more
yellow.
See Figure 43.
Adjustment Knob
Control Panel
Air Shutter
Air Shutter
Control Panel
Adjustment Knob
Содержание ASHTON AI31DVC
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