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TM 5-4120-386-14
2-7. STARTING AND OPERATING INSTRUCTIONS FOR HEATING - Continued.
(2) Adjust the temperature selector switch from COOLER to the desired
temperature. See Table 2-2 for operator control settings.
(3) Adjust the evaporator outlet louver blades to direct the airflow
as desired.
NOTE
Warm air is less dense than cool air, so it has a tendency to rise. To obtain
comfortable temperatures near the floor and lower parts of the room, it is
often advisable to adjust the evaporator louver blades to direct the air
slightly downward.
c. Heating Operation with Fresh Air.
(1) Open the damper door by turning the ventilation damper actuator if fresh
air is desired.
(2) Partially close the evaporator inlet louver blades.
2-8. STOPPING THE AIR CONDITIONER.
a. Position the mode selector switch to OFF.
b. Close the evaporator inlet louver blades by pushing tabs down.
c. Close the ventilation damper by turning the ventilation damper actuator.
d. If a shutdown is to be for an extended period, cover condenser side of unit with fabric
cover and disconnect the power cable.
2-9. VENTILATING OPERATION.
To operate the air conditioner as a ventilating blower, without affecting temperature,
proceed as follows:
a.
Perform the preventive maintenance checks and services (Table 2-l).
b.
Check for the correct voltage (208 volts, 50/60 Hz).
c.
Roll up and tie the fabric cover.
d.
Turn the ventilation damper actuator to open the damper door.
e.
Partially close the evaporator inlet louver blades.
f.
Position the mode selector switch to VENT.
g.
Open evaporator outlet louvers.
2-10. STOPPING THE AIR CONDITIONER.
a. Position the mode selector switch to OFF.
b. Close the evaporator inlet louver blades by pushing tabs down.
c. Close the ventilation damper by turning the ventilation damper actuator.
d. If a shutdown is to be for an extended period, cover condenser side of unit with fabric
cover and discomect the power cable.
2-8

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