TM 9-4120-403-14
f. Adjust louvers to suit. Since warm air tends to rise it is normally better to adjust the conditioned air
outlet louvers slightly downward. The conditioned air inlet louvers should be full open.
Figure 2-13. Louver Adjustment
g. During periods of very cold weather the fabric cover should be rolled down and zipped.
NOTE
Fresh (outside) air cannot be introduced with fabric cover rolled down and damper closed.
Figure 2-14. Fabric Cover
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