Heat & Glo • RED40, RED40ST Installation Manual • 2155-980 Rev. C • 11/13
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Figure 9.5 Air Shutter
E. Air Shutter Setting
Air shutter settings may be adjusted by a quali
fi
ed install-
er at the time of installation. The air shutter is set at the
factory for minimum vertical vent run. Adjust air shutter for
longer vertical runs. See Figure 9.5.
• Loosen the 1/4 in. screw.
• Twist shutter to adjust.
• Shutter may be open for longer horizontal vent runs.
• Do not close the air shutter more than 1/16 in. for NG or
1/4 in. for LP.
• Tighten the screw.
NOTICE:
If sooting occurs, provide more air by opening
the air shutter.
Air Shutter Settings
RED40/RED40ST
NG
LP
GRANITE KIT
1/16 in.
1/4 in.
LIGHT KIT
1/16 in.
1/4 in.
PORCELAIN KIT
1/16 in.
1/4 in.
