SYSTEM FUNCTIONS
INTELLIGENT DEFROST
The Intelligent Defrost function increases room comfort and saves energy by eliminating
unnecessary defrost cycles. In heating mode, the unit will monitor the outdoor coil for frost
buildup. Once frost buildup has been detected, the system will switch into a defrost mode to
remove the frost.
I FEEL MODE
The unit will sense room temperature at the remote controller instead of at the indoor unit.
It then adjusts airflow and temperature accordingly for the ultimate in personal comfort
control and energy savings. This function is only available with the wired Tether Controller.
SWING LOUVER
The adjustable swing louvers can be controlled from the wireless controller. Vertical swing
louvers allows five different air discharge directions including Continuous Sweep. Maximize
comfort by adjusting the direction of airflow in the room by moving the louvers up or down.
FRESH AIR INTAKE
The Ceiling Cassette has a ventilation air knockout that allows a 4-inch flex duct connection and
a field-supplied duct booster fan. The maximum fresh air allowed is 20% of the unit's high-speed
fan airflow rating.
POWER FAILURE MODE
Power interruptions are no problem for the
Multi21 system. User selections and system parameters
are stored in non-volatile memory. These parameters are retained during a power failure. When
power is returned, the Ceiling Cassette system will automatically return to the last operating mode.
TURBO MODE
Use Turbo Mode for situations where you wish to achieve the desired room temperature in the
shortest possible time. This mode runs the unit at ultra high speeds for quickest results.
CLOCK
The wireless remote controller has a built-in clock feature. The remote will display the time of
day in a 24-hour format.
TIMER MODE
The unit can be programmed to turn ON or OFF after a specific amount of time. The time period
is adjustable between one half and 24 hours.
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