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TM 5-4120-377-14
d. For faster cool down at initial start-up fresh air damper (door) should be closed. After desired cooling
temperature is reached, it is normally better to keep the fresh air damper (door) slightly open. During periods of
very hot outside temperatures, it should be closed to improve efficiency and conserve energy.
Figure 2-17. Fresh Air Damper (Door) Adjustment
e. When room or enclosure temperature reaches the desired level, slowly turn the TEMPerature control
thermostat knob toward INCREASE. Cooling will stop when you reach the approximate room temperature.
Further adjustment can be made by turning the TEMPerature control thermostat knob slightly toward
DECREASE (cooler) or INCREASE (warmer) until desired temperature is controlled automatically.
f. Adjust louvers to suit. Since cold air tends to flow downward, it is normally better to adjust the
conditioned air outlet louvers slightly upward. The conditioned air inlet louvers should be full open.
CONDITIONED AIR
OUTLET LOUVER
EACH BLADE CAN BE
ADJUSTED
INDIVIDUALLY BY HAND
CONDITIONED AIR INLET
LOUVER BLADES
ADJUSTED AT LEVER
TS4120-377-14/2-18
Figure 2-18. Louver Adjustment
2-20
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