3 Product description
6
Operating instructions 0020237621_02
3.1.3
Radio outside temperature sensor
1
2
3
1
Wall-mounting base
2
Radio outside temperat-
ure sensor
3
Solar cell
3.2
Main function
The system control is a weather-compensated system con-
trol with an outdoor temperature sensor installed in the open
air.
The system control is connected to the outdoor temperature
sensor and the heat generator via the radio receiver unit.
The system control radio-controls the heating installation and
other connected components, e.g. the domestic hot water
generation for a connected domestic hot water cylinder or
the ventilation of a connected ventilation unit.
3.2.1
Heating
The outdoor temperature sensor measures the outdoor
temperature and forwards the values to the system control.
When the outdoor temperature is low, the system control in-
creases the flow temperature of the heating installation. If the
outdoor temperature increases, the system control reduces
the flow temperature. The system control responds to the
fluctuations in the outdoor temperature and uses the flow
temperature to ensure that the room temperature remains at
the desired temperature.
3.2.2
Cooling
The room temperature sensor measures the room temper-
ature and sends the data to the system control. If the room
temperature is higher than the desired temperature that is
set, the system control switches cooling on.
3.2.3
Ventilation
Using a controlled exchange of air, the ventilation unit en-
sures that the living rooms are ventilated and aerated. The
system control controls the air volume flow via the ventilation
levels that are set.
3.2.4
Domestic hot water generation
A temperature sensor measures the temperature of the wa-
ter in the domestic hot water cylinder and forwards the val-
ues to the system control. If the temperature lies below the
set value, the system control increases the temperature in
the domestic hot water circuit and therefore heats up the wa-
ter to the set domestic hot water temperature.
3.2.5
Circulation
The secondary return pipe is connected to the domestic hot
water pipe and forms a circuit with the domestic hot water
cylinder. The circulation pump pumps the domestic hot water
through the domestic hot water pipe, either continuously or
on a time-controlled basis. This means that domestic hot
water is available at the draw-off points.
3.3
Zones
A building is divided into several zones if the heat demand
differs between different sections of the building.
–
If underfloor heating and radiator heating are installed in
a house.
–
If a house contains more than one independent residen-
tial unit.
If more than one zone is available, the system control con-
trols the available zones.
3.4
Hybrid manager
If a heat pump and an additional boiler are connected, you
can use the hybrid manager. If there is a heat demand, the
hybrid manager picks the heat generator that is more cost-
efficient. The hybrid manager decides which heat generator
to operate based on the tariffs that are set in relation to the
heat demand.
To ensure that the heat pump and the boiler can work effect-
ively and in synch with one another, the tariffs (
→
Page 16)
must be set correctly. If the tariffs are set incorrectly, this res-
ults in increased costs.
3.5
Frost protection function
The frost protection function protects the heating installa-
tion and flat from frost damage. The frost protection function
monitors the outdoor temperature.
If the outdoor temperature
–
falls below 4 °C, the system control switches the heat
generator on after a frost protection delay time, and
brings the target room temperature to 5 °C.
–
rises above 5 °C, the system control does not switch the
heat generator on but monitors the outdoor temperature.
Note
The competent person can set the frost protection
delay time.
