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Room temperature controller | Operating mode and setpoints
If a room is not used during the day because persons are absent, you can ac-
tivate the Standby mode. Thereby, you can adjust the room temperature on a
standby value, thus to save heating or cooling energy, respectively.
–
Night
During the night hours or during the absence of persons for a longer time, it
mostly makes sense to adjust the room temperature to lower values for heat-
ing systems (e.g. in bedrooms). In this case, cooling system can be set to
higher temperature values, if air conditioning is not required (e.g. in offices).
For this purpose, you can activate the Night mode.
–
Frost/heat protection
Frost protection will be required if, for example, the room temperature must not
fall below critical values while the window is open. Heat protection can be re-
quired where the temperature rises too much in an environment which is al-
ways warm, mainly due to external influences. In such cases, you can activate
the Frost/heat protection operating mode and prescribe some temperature set-
point of its own for either option, depending on whether "Heating" or "Cooling"
has been selected, to prevent freezing or overheating of the room.
–
Comfort extension (temporary Comfort mode)
You can activate the comfort extension from the Night or Frost/heat protection
mode (not triggered by the "Window status" object) and use it to adjust the
room temperature to a comfort value for some time if, for example, there are
people in the room during the night hours. This mode can exclusively be activ-
ated via the presence object. The comfort extension option will be automatic-
ally deactivated after a definable time has elapsed, or by receiving a presence
object value = "0". You cannot retrigger this extension.
You can assign your own setpoint temperature to the "Heating" or "Cooling"
operating modes for each operating mode.
Operating mode switchover
The operating mode is switched by the "Operating mode - Preset" object.
During the running time, the operating mode can be changed over through this value
object immediately after the receipt of only one telegram. In this connection, the
value received will set the operating mode. In addition, a second 1-byte object is
available which, by forced control and through a higher level, can set an operating
mode, irrespective of any other switchover options.
Taking the priority into account, a specific switchover hierarchy will result from the op-
erating mode switchover by the objects, a distinction being made between presence
detection by the presence button (see figure 34) or the presence detector
(see figure 35). In addition, the status of the windows in the room can be evaluated
using the "Frost/heat protection - Window contact - Status" object, meaning that,
when a window is open, the controller can switch to frost/heat protection mode, irre-
spective of the set operating mode, in order to save energy .
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Page 139 of 257
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