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Siemens
Synco™ living Operating instructions
CE1B2707en
Building Technologies
System overview
23.08.2008
Ventilation control
The central apartment unit has a ventilation time switch providing 6 switching
points for each day for 7 weekdays and one special day. Each switching point
allows for changing over between the ventilation operating modes (Comfort,
Precomfort and Economy).
Ventilation stage control is carried out via air quality, relative room humidity,
current apartment operating mode (Comfort, Precomfort, Economy, Protec-
tion) or ventilation stage selection. The stage setpoints are changed based on
the ventilation time switch which is independent of heating and cooling.
Short-term room air pollution can be remedied via the forced ventilation func-
tion.
For brief absences, an absence operating mode is available. Extended ab-
sences are covered by a holiday program.
Ventilation control responds to open windows (if they have the associated
window contacts), smoke (if smoke detectors are connected) and external
ventilation contacts.
Night cooling can be used for cooling with possible control of a heat recovery
bypass to avoid heat recovery.
Multi-controller RRV934
The multi-controller allows for controlling ventilation
stages and heat recovery bypass. It has inputs to
connect an air quality and humidity sensor. The
other inputs and outputs are universal.
DHW heating
The central apartment unit controls DHW heating of a locally connected DHW
storage tank or facilitates remote operation of a DHW storage tank connected
to the heat generation controller or some other central apartment unit.
For that purpose, the central apartment unit is equipped with a DHW 7-day
time switch with 6 switching times per day for changeover between Normal
mode and Reduced mode.
The central apartment unit can also be used for triggering manual forced
charging of the DHW storage tank. The current DHW temperature appears on
the display of the central apartment unit.
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