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TM 9-4120-389-14
c.
Rollup and secure fabric cover if fresh air damper (door) is opened.
NOTE
When using fresh air for ventilation a window, door or vent should be opened. If
the room or enclosure is tightly closed, an overpressure will build up and decrease
the volume of fresh air drawn in.
d.
Adjust louvers to suit.
Figure 2-7. Louver Adjustment
NOTE
To pull in maximum of fresh (outside) air, close conditioned air inlet louvers.
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