3 Product description
6
Operating instructions
multiMATIC
0020237615_01
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 control is a weather compensator with an outdoor tem-
perature sensor that is fitted in the open air.
The control is connected to the outdoor temperature sensor
and the heat generator via the radio receiver unit. The con-
trol radio-controls the heating installation and other connec-
ted 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 tem-
perature and forwards the values to the control. When the
outside temperature is low, the controller increases the flow
temperature of the heating installation. If the outdoor temper-
ature increases, the control reduces the flow temperature.
The control responds to the fluctuations in the outdoor tem-
perature and uses the flow temperature to ensure that the
room temperature remains at the required temperature.
3.2.2
Cooling
The room temperature sensor measures the room temperat-
ure and sends the data to the controller. If the room temper-
ature is higher than the desired temperature that is set, the
controller 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
control controls the air volume flow via the ventilation levels
that are set.
3.2.4
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 control. At a low domestic hot water temperature,
the control increases the temperature in the domestic hot
water circuit and thus heats the water in the domestic hot
water cylinder to the set domestic hot water temperature.
3.2.5
Circulation
If a circulation pump is installed in the heating installation,
the draw-off points will provide hot water more quickly. The
circulation pump pumps hot water through the secondary
return pipes in the circuit and to 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 controller controls the
available zones.
3.4
Hybrid manager
If you have connected a heat pump, the hybrid manager
attempts to cover the declared energy requirement under
the considerations of the cost optimisation and the technical
conditions.
Note
To ensure that the heat pump and the boiler can
work effectively and in synch with one another,
the tariffs (
→
Page 16) must be set correctly. If
the tariffs are set incorrectly, this may result in
increased costs.
If the system declares an energy requirement, the hybrid
manager switches on and forwards the energy requirement
to the heat generator. The hybrid manager decides which
heat generator to operate based on the tariffs that are set in
relation to the energy requirement.
3.5
Frost protection function
The frost protection function protects the heating system and
apartment from frost damage. The frost protection function
monitors the outside temperature.
If the outside temperature
–
falls below 4 °C, the controller switches the heat gener-
ator on after a frost protection delay time, and brings the
target room temperature to 5 °C.
–
rises above 5 °C, the controller does not switch the heat
generator on but monitors the outside temperature.
Note
The competent person can set the frost protection
delay time.
Содержание multiMATIC VRC 700f/4
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