TM 9-4520-258-14
2-8.
OPERATING PROCEDURES - continued.
b.
Heat-Auto Mode - continued (Refer to Figure 2-7)
(10)
The unit may be placed in the HI temperature, mode and deliver heated air up to 150°F as follows.
(a)
Follow the procedures in steps (1) through (8) for operating in the HEAT AUTO mode.
NOTE
HI temperature mode can not be obtained in the HEAT MANUAL mode.
(b)
Once the unit burner lights up and the fuel pressure is correct, the unit may be placed in the HI
heat mode by depressing arrows (1) and (2) on the remote thermostat (3) at the same time.
(c)
The remote thermostat (3) will indicate HI. The ambient temperature will not affect the heater
operation.
(d)
The unit may be returned to the AUTO HEAT mode by depressing arrows (1) and (2) together a
second time.
Figure 2-7. Operation, Heat Auto Mode (Sheet 2 of 2)
2-28
