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N420220A_ManualeHRC_Rev07.EN
5
COMMISSIONING AND METHOD OF USE
5.1.1
GENERALITY
To ensure the “discharge” of the humidity that is naturally created inside the house, the unit must operate continuously at least at reduced speed
(speed 1). If you turn off the ventilation unit, condensation may occur inside the unit and inside the building with possible moisture damage.
5.1.2
OPERATION OF CONTROL UNIT VERSION - S -
The control unit consists of two three-position changeover
selectors and an adjustment knob.
It is designed for fixing with screws adapted to the 503
flush-mounted box; however, it can be fixed to any type
of flat wall using suitable fasteners.
Control unit
The fan speed selector gives the possibility to choose the
maximum speed, the minimum speed and shutdown of
the system. The speed variation allows to modify the air
flow exchanged with the outside in any functioning mode.
On and fan speed selection key
The right switching key has three operating modes:
-Auto: the unit alternates the flow between extraction and
intake of air;
-In: air intake only;
-Out: air extraction only.
Operation mode selection key
