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Heat & Glo • REVO-V12, REVO-S21, REVO-H31 Installation Manual • 2273-980 Rev. J • 5/15
E. Air Shutter Setting
The Revo is shipped with an external adjustable air shut-
ter. Air shutter settings should be adjusted by a qualified
service technician at the time of installation. Adjust air
shutter for
maximum flame appearance
. The shutter set-
tings will vary due to fuel type and vent configuration.
See
Figure 9.1.
To open the air shutter, turn the screw counterclockwise
so that the screw goes in and raises the air shutter. Turn-
ing the screw clockwise will close the air shutter.
Note:
The air shutter is shipped set between 3/8 in. and
full open. Adjust shutter to maximize flame appearance.
NOTICE:
If sooting occurs, provide more air by opening
the air shutter.
Figure 9.1 Air Shutter
SHUTTER
SCREW
SHUTTER
SLEEVE