Operating instructions

E-16
English
10.2
10.1.2 Activation of cooling functions
Special regulatory functions are performed when cooling
operation is activated.
The cooling functions can fail to activate due to the following
reasons:
 The external air temperature lies below the limit temperature
set under "Settings - Cooling" (risk of frost)
 Neither silent nor dynamic cooling was selected with “Yes” in
the settings
In all these cases, the cooling operating mode will remain active.
However, the regulation system responds as in the summer
operating mode.
10.1.3 Silent and dynamic cooling
Different system configurations can be implemented according to
each integration diagram:
 Dynamic cooling (e.g. fan convectors)
Regulation according to a fixed setpoint. Adjust the return
set temperature in the Settings menu item.
 Silent cooling (e.g. underfloor cooling, wall-panel cooling or
cooled ceilings)
Regulation according to the room temperature. Regulation is
based upon the temperature in the room where the room
climate control station 1 is connected according to the circuit
diagram. Set the desired room temperature in the Settings
menu item.
 Combination of dynamic and silent cooling
Regulation is carried out separately in two separate control
circuits.
The dynamic circuit is regulated according to a fixed setpoint
(as described for dynamic cooling).
Silent cooling is regulated on the basis of the room
temperature (as described for silent cooling) by controlling
the mixer for heating circuit 2 (silent heating and cooling
circuit).
Make selections in the menu item “Settings – Cooling”.
10.2 Regulation of the room temperature
Heating systems are normally equipped with an automatic
mechanism for separately regulating the room temperature in
each room.
The room thermostats measure the current temperature in
heating operation. If the current temperature undershoots the set
temperature, the thermostats activate the regulating device (e.g.
actuator).
In cooling operation, the room thermostats must be either
deactivated or replaced with units that are suitable for both
heating and cooling.
The room thermostat responds inversely when in cooling
operation. If the set temperature exceeds the current
temperature, the regulating device is activated.
11 Special accessories
11.1 Room climate control station
When cooling with panel heating/cooling systems, regulation is
carried out according to the room temperature and humidity
measured by the room climate control station.
This is done by setting the desired room temperature on the heat
pump controller. The minimum possible cooling water
temperature is calculated from the room temperature and
humidity measured in the reference room. The control response
of the cooling system is influenced by the current measured room
temperature and the set room set temperature.
Fig. 11.1: Room climate control station