TM 9-4120-371-14
NOTE
It is normally better to keep the fresh air damper slightly open. This will create a slight
overpressure, provide replacement oxygen, and reduce room odors. Damper should be
closed during extreme weather conditions and during periods when fast warm up or
cooling is necessary.
Fresh air cannot be admitted if the fabric cover is rolled down.
Do not adjust controls unnecessarily. Properly set the controls (See para 2-8 through 211.) and the
will automatically control the temperature.
The Temperature control thermostat on t he control panel operates like a conventional room thermostat
except that the temperature scale is not marked on the control panel. The thermostat has a control range
of 40F to 90F (5C to 32C). The centered position of the control knob would be approximately 65F
(18C). The full INCREASE would be 90F (32C). The full DECREASE would be 40F (5C).
When the control panel is mounted in the unit the control temperature is sensed at the conditioned air
inlet.
When the control panel is mounted in a remote location (away from the unit) the temperature is sensed
that location.
(2) During cold weather
Adjust shades, blinds, etc. (when applicable) to admit sunlight during day. Close them at night.
Adjust the conditioned air outlet dampers slightly downward.
(3) During hot weather
Adjust shades, blinds, etc. (when applicable) to block out sunlight during day.
Adjust the conditioned air outlet dampers slightly upward.
28. OPERATION IN
VENTILATE MODE
(NO HEATING OR
COOLING NEEDED)
a. Turn mode setector switch to VENTILATE.
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