Functional Description - Master AC 24 Installation Manual

VENT
Ventilation-only operation
AUT. or AUTO
Room thermostat operation,
cooling/heating (if installed)
OFF or 0

Functional description

With the function switch in this position the evaporator fan will operate continuously and the
cooling unit, heating coil (if installed) and condenser fan will be turned off.
This mode can be used to bring in fresh outdoor air or to recirculate the indoor air - even when
cooling or heating (if installed) is not needed.
With the function switch in this position, the unit will operate according to the room thermostat
settings.
On the AC 24 with heating coils the room thermostat has a flip switch with the following
positions:
• Cool
With the flip switch in the cool position, the unit will cool as long as the thermostat senses a
temperature higher than the set point. When the temperature reaches the set point it cuts off
the compressor and fans.
OFF
With the function switch in this position all functions will stop immediately and only the
illuminated green lamp will indicate that the power is still on if the main switch is on.
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