TM 9-4120-388-14
2-8. OPERATION IN VENTILATE MODE- Continued.
c.
Adjust louvers to suit.
NOTE
To pull in maximum of fresh (outside) air, close conditioned air inlet louvers
2-9. OPERATION IN LO HEAT MODE. In the LO HEAT mode three thermostatically controlled heaters are activated.
a. Turn mode selector switch to LO HEAT.
b. Turn TEMPerature control thermostat knob as far as it will go in the INCREASE (warmer) position.
NOTE
For faster warmup start unit in HI HEAT mode. In moderate temperatures, unit can then
be switched back to LO HEAT.