TM 9-4120-402-14
2-9. OPERATION IN HEAT MODE. - continued
f. During periods of very cold weather, the fabric cover should be rolled down and snapped.
NOTE
Fresh (outside) air cannot be introduced with fabric cover rolled down except for units equipped
with blast damper.
Figure 2-11. Fabric Cover
NOTE
An overheat thermostat located near the heating elements will turn them off if the temperature in
the heater compartment reaches an excessive level.
2-17
