foris TwinFresh Expert RA1-50 C1 V.3, User Manual

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7
Ventilator operation modes
Ventilation:
the ventilator runs either in the air exhaust or air supply mode at a set speed.
In this mode some of the ventilators in the network run in the air supply mode and the other ones in air exhaust mode, depending on
the position of the DIP switch No. 2 (See section DIP switch positions).
Boost:
the ventilator goes to the maximum speed without changing the operation mode.
Regeneration:
the ventilator runs in two cycles, 70 seconds each, with heat and humidity regeneration.
•
Cycle I.
Warm stale air is extracted from the room and flows through the ceramic regenerator, which gradually absorbs heat and
humidity. In 70 seconds, as the ceramic regenerator gets warmed, the ventilator is switched to supply mode.
•
Cycle II.
Fresh intake air from outside flows through the ceramic regenerator, absorbs accumulated moisture and is heated up to
the room temperature. In 70 seconds, as the ceramic regenerator gets cooled down, the ventilator is switched to air extraction
mode and the cycle is renewed. If two ventilators are installed, they operate with opposite rotation directions in this mode. While
one ventilator supplies air, the other one extracts it.
The shutters are closed The shutters are open
Operating principle of the louver shutters of the TwinFresh Expert RA1-50 V.3 and TwinFresh Expert RA1-50 C1 V.3
The indoor unit of these models is equipped with automatic shutters.
During the ventilator operation the automatic shutters are open and let the air flow freely through the ventilator.
The automatic shutters are closed for 2 minutes at the ventilator shut down.
WARNING!
In case of supplying power to the ventilator when the frontal part of the indoor unit is removed, no power is supplied to the
actuator and its rod is not lifted to avoid damage.
After installing the front part of the indoor unit into place, the louver actuator will start operating normally.