Heatilator • Novus NBV • 4055-188 Rev C • 04/08
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P. Air Shutter Setting
Air shutter setting should be adjusted by a quali
fi
ed installer
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 12.14.
• Turn the thumbscrew to open and close.
Open
Close
Figure 12.14 Adjusting Air Shutter