TM 9-4120-398-14
c. When room or enclosure temperature reaches the desired level , slowly turn the temperature control knob toward
DECREASE (cooler). Heating will stop when you reach the approximate room temperature. Further adjustment can be made
by turning the temperature control knob slightly toward INCREASE (warmer) or DECREASE (cooler) until desired
temperature is controlled automatically.
d. Adjust fresh air damper (door) to desired setting. It is normally better to keep the fresh air damper slightly open.
Damper should be closed during very cold weather and during fast warmup periods.
Immediately following a power source interruption, rotate selector switch to OFF/RESET. To prevent
voltage fluctuation damage to the compressor motor. Do not turn on air conditioner until the generator
has come up to full speed.
NOTE
A high temperature cutout (HTCO) located near the heating elements will turn them off if the
temperature in the heater compartment reaches an excessive level.
