42
English
• BOOSTER MODE
• FIREPLACE FUNCTION
• BOILER FUNCTION
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P
AUTO
Like for “
Party Mode
”, “
Booster Mode
” determines an
increase in the timed speed respect to the nominal
speed.
The percentage of the duration and of the speed
increase of the ventilation unit can be configured
by the installer upon a specific request of the user.
The standard duration is 3 hours (default) and the
standard percentage is 130% beyond the nominal
speed.
Before standard duration ends, user can stop
Booster
mode by repeating the command on the remote
switch.
This is enabled by a remote control normally located
in a bathroom or kitchen.
The power board of the centralised unit receives the
pulse from the outside and enables the “Booster Mode”.
In this case the “Boost” icon appears as a notification
on the screen of the unit’s control panel.
If the unit is interfaced with an negative pressure
ambient pressure switch and is set in the DIP-SWITCH
configuration recommended in presence of a natural
draught chimney, the unit is automatically turned off
when the ignition of the fireplace causes negative
pressure in the room.
This occurs in order to prevent the ambient pressure
induced by the action of the dual flow ventilation
unit from counteracting the natural draught of the
fireplace and releasing smoke into the room.
If the unit is interfaced with a remote switch and is
set in the DIP-SWITCH configuration recommended in
presence of an atmospheric boiler, the unit is forced
into a strong imbalance supply mode in order to
facilitate the ignition of the boiler.
The mode remains active as long as the switch stays
in the activation position.
SUPPLEMENTARY FUNCTIONS
• ANTIFREEZE FUNCTION
• With Integrated Modulating Electric Resistance
In the event that the unit is installed in a cold climate,
we recommend the use of versions with an electric
antifreeze resistance on the external air intake circuit
(
MODELS ENY - SER/SEL/SPER/SPEL).
The electric resistances available for units preheat
the air entering the heat exchanger in order to avoid
freezing of the humid air extracted and discharged
by the heat exchanger in the opposite circuit.
In fact, when the external air drops below the
critical temperature, posing the risk of freezing of
the discharged air, the resistance is activated and
modulates the heat output to keep the temperature
of the discharged air within the desired fluctuation
range (set point 4°C).
The electric resistances are selected in order to
maintain the minimum conditions of indoor com-
fort at outdoor temperatures down to -10°C, and in
order to avoid the degenerative formation of ice at
discharge down to -15°C outside.
The electric resistance is fitted with a safety thermostat
that turns off the unit in case of uncontrolled heating.
In case the resistance does not start up, instead, the
unit will turn off if the intake air temperature falls
below 5°C.
Activation of the resistance as a result of the anti-
freeze function is represented by the icon
.
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