Figure 2-12. Operation in High Heat Mode

TM 5-4120-359-14

d. Operation in the HIGH HEAT mode. Use HIGH HEAT mode when LOW HEAT mode fails to heat room or shelter,

or for faster warm up after a period of shutdown.

(1) Turn MODE SELECTOR SWITCH to HIGH HEAT. After 5 seconds, air flow can be felt.

NOTE

In the HIGH HEAT mode the condenser (rear) section blower does not operate.

Figure 2-12. Operation in High Heat Mode

(2) Turn TEMPERATURE CONTROL knob to WARMER. After 2 minutes, air from conditioned air outlets will feel

warmer than the ambient air.

Figure 2-13. Adjustment - Warmer

(3) When the room or shelter air temperature rises to the desired level, slowly turn the TEMPERATURE

CONTROL knob toward COOLER.

NOTE

During HIGH HEAT mode operation, one bank of heating elements operate

continuously.

The TEMPERATURE CONTROL will control (turn on or off

automatically) a second bank of heaters.

2-9