4
Product characteristics
–
Manually setting a comfort temperature
–
Manually switching off the temperature control
–
Input terminal for activation of ECO temperature via central clock
–
Input terminal for activating the cooling mode via central control
–
Internal temperature sensor
–
Frost protection function
–
Temperature drop detection (adjusting to frost protection temperature when
window is opened)
–
Controller output working method: pulse width modulation (PWM) or two-point
switchable
–
Adaptation to valve type (deenergised opened or deenergised closed, switch-
able)
–
Offset adjustment (correction value for measured temperature)
–
Valve protection function (once a week opening and closing of valve)
–
Permanent LED operation possible
5
Functional description
ECO operation
In many areas of the building it makes sense for the temperature to be set to a lower
ECO temperature at certain times rather than to heat permanently to the comfort tem-
perature. By connecting the input terminal
Ø
to 24 V, the temperature is reduced by 4
°C and the status LED lights up green. This should be controlled by a central clock.
In cooling mode, the wiring of the input terminal
Ø
is ignored.
Cooling mode
Modern heat pump systems often also provide the option of cooling rooms. In cooling
mode, it is possible to change the cooling temperature using the control knob.
Switching between heating and cooling mode is done via the control knob or by wir-
ing the input terminal “C” with 24 V.
Temperature drop detection
In the event of a sharp drop in temperature, e.g. after opening a window, the system
regulates to the frost protection temperature of 5 °C for a maximum of 30 minutes.
Pressing or turning the control knob cancels the operation.
Offset
This function allows the adjustment of the position of the control knob so that it cor-
responds to the room temperature. Thus, the indication of the temperature via the
control button is comparable in different rooms. An adaptation of up to +/- 3 °C is
possible.
Room thermostat (heating/cooling) 24 V
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82405003
16.09.2022
J0082405003
