
HOME VENTILATION
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Control System
General
The ventilation unit is controlled from a Premium control panel,
from which you can also read and change settings. You can
also select three different fan speeds from the Premium cooker
hood.
In multi-story buildings and in terraced houses, the ventilation
unit is preferably controlled from a Premium cooker hood. The
caretaker then needs only one extra control panel for changing
the settings, if required. For this reason a Premium control panel
is not standard equipment on the R85 model, however, but if
the need arises, it can be purchased as an accessory.
Control from a Premium control panel
A Premium control panel (optional item of equipment) can be
installed at an optional location, recessed in a junction box or
surface mounted on the wall. It can be located near the ventila-
tion unit or somewhere else, and then must be connected to
the unit via a 20 metre long modular cable. An extra control
panel can also be connected, if it is desirable to control the
ventilation unit from several places.
Selectable functions
• Operation. The unit can be started and stopped.
• Fan speed. The ventilation unit fans can be set and con-
trolled to operate at five different speeds. The display
indicates the Away mode when the fans run on their lowest
speed and indicates the Home mode when the fans are
running at normal speed. The speed of the supply air fan
can deviate from that of the extract air fan and the speed is
controlled from the control panel.
• Timer. The 24-hour/weekly timer has four programs. You can
set the desired times if you want the unit to activate a desired
function. The unit runs in the economical minimum speed
mode at other times (Away). Functions: Home, Away, Boost,
Cool. You can also select the temperature of the supply air.
• Temperature. You can set the desired start temperature of the
electric air heater for reheating (optional item) within a range
of 13–20 °C. You can also shut off the reheating function.
• Summer operation. When certain limit values are met, the
ventilation unit stops the heat exchanger (when heat recovery
isn’t needed).
• Summer night cooling. The function starts, if certain tem-
perature conditions are complied with. The heat exchanger
in the unit stops and the speed of the fans is increased. The
cooler air at night, for instance, is then utilised for cooling the
home. The fan speed can be selected.
• Cooling energy recovery In the summer, when the indoor
air is cooler than the outdoor air, the heat exchanger starts up.
• Fireplace switch function. Temporarily stops the extract air
fan. This generates excess pressure in the home and in this
way “forces” an updraught in the chimney, which prevents
smoke from entering the room when you light the log-fire.
• Display of the operating speed. The current operating
speed is continuously shown as text on the display screen.
• Service reminder. The service reminder interval can be set to
a period ranging between 3–12 months.
Automatic functions
• Alarms. Indicate the need for filter change or servicing and a
possible disruption in operation.
• Heat exchanger. Starts and stops in response to signals from
the temperature sensor.
• Overheating protection. For the motors and the electric air
heater.
• Freeze protection. Prevents freezing in the heat exchanger.
The ventilation unit is controlled from a Premium control panel.