TM 9-4120-403-14
c. Adjust fresh air damper to desired setting. The unit can be operated in the VENTILATE mode with
the fresh air damper (door) closed, open. or partially opened.
Figure 2-6. Fresh Air Damper (Door) Adjustment
NOTE
The fabric cover must be rolled up and secured if fresh air damper (door) is to be opened. 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
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