TM 9-4120-388-14
2-7. GENERAL OPERATING PROCEDURES - Continued.
NOTE
It is normally better to keep the fresh air damper slightly open. This will create a slight over-
pressure, 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.
(d) Do not adjust controls unnecessarily. Properly set the controls (See para 2-8 through 2-11) and the
unit will automatically control the temperature.
(e) The TEMPerature control thermostat on the control panel operates like a conventional room thermo-
stat 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).
(f) The control temperature is sensed at the conditioned air inlet.
(2) During cold weather
(a) Adjust shades, blinds, etc. (when applicabie) to admit sunlight during day. Close them at night.
(b) Adjust the conditioned air outlet dampers slightly downward.