Initial setting
To satisfy the requirements of the STANDARDS in force
in the country where the appliance is installed, at the
time of installation it is obligatory for the installer to set
the Vmin and Vmax values (Vmed, which can be
selected in MAN mode, is obtained from the Vmin and
Vmax values), according to the system characteristics
(length and type of pipes, number of bends, etc.).
The Middle speed is established automatically by the
system electronics based on the previously set values of
Minimum and Maximum speed.
These settings can be made by the installer during the
initial start up stage, using the remote control provided.
As well as the speed settings, the initial configuration
will also include the adjustment of the air inlet and outlet
openings to and from the rooms served.
Appliance/remote control coupling
Each remote control must be initialised before use. This
activity is entrusted to the installer (for remote controls
sold separately from the product), or factory set (for
remote controls sold with the product).
The activity comprises the following steps:
a. turn the power off for at least 30 sec.;
b. turn the power back on;
c. within 60 sec. perform the procedure described
below.
In detail, holding down the ENTER key for at least 3
seconds, the appliance will couple with the remote
control. Completion of coupling will be confirmed by an
acoustic signal (constant 5 second BEEP) from the
remote control itself.
As each remote control unit is being synchronised, any
settings made to the appliance up to that time are
automatically transferred to the remote control.
Still repeating the same sequence, each appliance may
be coupled to several remote controls, to allow the user
to operate the appliance by means of several remote
controls, situated in different rooms in the home, or to
allow the replacement of a faulty remote control.
Function
Motors
The appliance is equipped with:
Two
brushless
three
phase
motors,
specifically
designed to guarantee very low energy consumption
thanks to their high efficiency, which drive two
centrifugal fans with reverse blades provided with high
air flow efficiency which respectively extract the stale
and damp air from the service rooms (kitchens,
bathrooms, washrooms, etc), and introduce fresh
external air into the living rooms (sitting rooms, dining
rooms, bedrooms, etc).
A stepper motor, which operates the by-pass and de-
frosting valves.
Heat Exchanger
The two air flows, the intake and extract, meet in the
appliance, (without ever actually coming into direct
contact, in order not to jeopardize the quality of the
incoming air), inside the heat exchanger, where the
warm outgoing/extracted air yields its heat to the cold
incoming/infed air, thus minimizing the temperature
variation in the dwelling.
Valves
A valve system performs the summer by-pass and
automatic frost protection functions of the heat
exchanger.
By-pass
: the purpose of the bypass is to ventilate the
dwelling without heat transfer. The opening of the by-
pass valves enables the direct introduction of external
air, without it passing through the exchanger. The flow of
air extracted from the house continues to pass through
the exchanger.
In the appliance the by-pass valve opening can take
place in two ways:
Manual
, by pressing the MODE / SUMMER button on
the remote control;
Automatic
, when the appliance operates in AUTO
mode. In this second case, the valve opens by way of
Text > 15°C if one of the following conditions applies:
• if Tint > Tset: Text ≤ Tint
or
• if Tint ≤ Tset: Text > Tint
(Tset = temperature previously set using the remote
control)
The by-pass valve closes automatically in the other
cases.
Frost protection
: the appliance is equipped with an
automatic mechanism that prevents the formation of
frost inside the heat exchanger; this device consists of a
valve that allows the mixing of the cold incoming air
from outside with the warmer air of the location in which
the appliance is installed. The frost protection procedure
18
18
60 mm
27
ENGLISH