TM 9-4120-399-14
2-7. GENERAL OPERATING PROCEDURES. - Continued.
b. General Operation of Controls. Do not adjust controls unnecessarily. When the
controls are properly set (See paragraphs 2-8. through 2-11.), the unit will automatically control
the temperature. The temperature control thermostat on the control module operates like a
conventional room thermostat except that the temperature scale is not marked on the control
module. The thermostat has a control range of 40 F to 90 F (5 C to 32 C). The centered
position of the control knob would be approximately 65 F (18 C). The full INCREASE
(warmer) would be 90 F (30 C). The full DECREASE (cooler) would be 40 F (5 C). When
the control module is mounted in the unit, the control temperature is sensed at the conditioned
air inlet. When the control module is mounted in a remote location (away from the unit) the
temperature is sensed at that location.
(1) During Cold Weather;
(1) Adjusts shades, blinds, etc. (when applicable) to admit sunlight during day. Close
them at night.
(2) Adjust the conditioned air outlet louvers slightly downward.
(2) During Hot Weather;
(1) Adjust shades, blinds, etc. (when applicable) to block out sunlight during day.
(2) Adjust the conditioned air outlet louvers slightly upward.
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.
a. Turn mode selector switch to VENTILATE.
b. 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 open.
c. Adjust louvers to suit.
NOTE
To pull in maximum of fresh (outside) air, close conditioned air inlet
louvers.
