Heating Operation with Fresh Air

TM 9-4120-430-14

0005 00

Heating Operation with Fresh Air

1. Open the damper door by adjusting the ventilation damper control chain if fresh air is desired.

2. Partially close the evaporator intake louver blades.

Stopping The Air Conditioner

1. Position the mode selector switch to OFF.

2. Adjust the ventilation damper control to close the damper door.

3. If a shutdown is to be for an extended period, cover condenser side of unit with canvas cover and disconnect the

power cable.

Ventilating Operation

WARNING

For safe operation, the air conditioner must be grounded prior to use.

To operate the air conditioner as a ventilating blower, without affecting temperature, proceed as follows:

1. Perform the preventive maintenance checks and services (WP 0010 00).

2. Check for the correct voltage and phase (208 volts, three-phase, 50/60 Hz for S9160-18KH-3 unit or 230 volts,

single phase, 50/60 Hz for S9150-18KH-1 unit).

NOTE

The J2 connector is the main power input connecter. The J1 connector at the back of

the unit is the ALTERNATE input connector. To use the J1 ALTERNATE

connector, the TB1 connections must be shifted from J2 to J1. Refer to CONNECT

POWER SOURCE procedures in WP 0014 00 and to wiring schematic in WP 0038

3. Roll up and tie the canvas cover.

4. Open the damper door by adjusting the ventilation damper control chain.

5. Partially close the evaporator intake louver blades.

6. Position the mode selector switch to VENT.

7. Open evaporator intake louvers.

Stopping The Air Conditioner

1. Position the mode selector switch to OFF.

2. Close the evaporator intake louver blades by pushing tabs down.

3. Adjust the ventilation damper control to close the damper door.

0005 00-6