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Heatilator • Novus NBV • 4055-188 Rev C • 04/08 29
P. Air Shutter Setting
Air shutter setting should be adjusted by a qualifi 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.
OpenClose
Figure 12.14 Adjusting Air Shutter