TM 9-4120-401-14
2-9. OPERATION IN HEAT MODE. - contlnued
e. Adjust louvers to suit. Since warm air tends to rise, it is normally better to adjust the conditioned air
discharge louver slightly downward. The conditioned air intake louver should be fully open.
f. During periods of very cold weather, the fabric cover should be rolled down and snapped.
2-10. OPERATION IN COOL MODE.
a. Fabric cover must be rolled up and secured with turnbutton fasteners.
b. Turn MODE selector rotary switch to COOL.
c. Turn TEMPERATURE control potentiometer to full COOL position.
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.
e. When room or enclosure temperature reaches the desired level, slowly turn the TEMPERATURE control
potentiometer toward WARM. Cooling will stop when you reach the approximate room temperature. Further
adjustment can be made by turning the TEMPERATURE control potentiometer slighly toward COOL or WARM
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 discharge louver slightly upward. The conditioned air intake louver should be fully open.
Turn the MODE selector rotary switch to OFF/RESET.
NOTE
Do not disconnector turn off power to the air conditioner during periods of normal
shutdown. Power should be disconnected only if unit is to be serviced, during
emergency conditions, or during periods of extended shutdown, due to warm up
2-11