User Manual

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Siemens Central apartment unit with consumption data acquisition QAX913 CE1N2740en
Building Technologies 2016-01-30
Specific monitoring and operating function
The central apartment unit monitors the connected door and window switches.
A monitor delay can be parameterized on door and window switches as well as a
detector delay for door switches. Setting the monitor delay to infinity only re-en-
ables monitoring after the doors are closed.
Windows and doors that are opened when monitoring is enabled are automatically
excluded from monitoring.
The opening of a monitored door / window switch can be used for triggering a
switching group (event-driven) and to generate an alarm.
The door and window switches are also used for the window airing function. As
soon as a window monitored by a window switch is opened, the heating circuits for
the respective room stop opening their valves, even if the room temperature drops
for short periods. The room temperature level drops to protection mode after a set
period expires, until the window is closed again. The "normal" control mode is re-
sumed after the window is closed.
An open window can also influence operation of a ventilation plant or air condi-
tioner.
This prevents unnecessary heat losses during the airing phase and subsequent
overheating.
Exhaust hoods can also be influenced by monitoring window switches.
The central apartment unit monitors the connected smoke detectors (S-Mode TP)..
A responding smoke detector can trigger a switching group (event-driven) and trig-
gers an alarm in any case.
The central apartment unit monitors connected water detectors.
A responding water detector can be used to enable a water shutoff valve and an
interior siren and triggers an alarm in any case.
The central apartment unit monitors connected CO or gas detectors.
A responding CO / gas detector can be used to enable a natural gas shutoff valve
and an interior siren and triggers an alarm in any case.
The central apartment unit receives measured values for outside air pressure and
air pressure from the meteo sensor or via KNX-TP.
The current measured values for outside air pressure and outside temperature, as
well as the air pressure trend, can be displayed in the quiescent picture. The qui-
escent picture displays changes in outside air pressure over the last few hours in
the form of an arrow.
Moreover, the weather trend (sunny, variable, rainy) is determined based on a
change in air pressure and the absolute pressure, and is displayed in the quiescent
picture.
The curve for outside air temperature and outside air pressure over the last 24
hours can be queried via 2 info pages.
The central apartment unit or external switches (transmitters) can be used to switch
or dim every connected light fixture.
In addition to manual operation, the light settings can be made via the internal time
switch (the time switch can be processed "always" or "for absences only"), pres-
ence simulation, scenes or events (e.g. twilight, absence).
Suitable are Siemens GAMMA and Hager tebis KNX RF lighting actuators, as well
as KNX TP lighting actuators from other manufacturers..
Door and window
switches
Smoke detector
Water detector
CO or gas detector
Weather station
Lighting control