User Manual

57 / 110
Siemens Synco™ living CE1B2740en
Building Technologies Central apartment unit QAX9x3 13.12.2010
Runtime forced ventilation
Forced ventilation is active for the runtime set for forced ventilation (0..60 min).
After expiration of this time, ventilation returns to the ventilation stage prior to
forced ventilation.
Main menu > Ventilation > Ventilation settings > Runtime forced vent:
Factory setting 30 min
Impact of window switches
If at least one window is open in one of the set rooms, the ventilation stage is
activated as per the setting (see page 51).
Main menu > Ventilation > Ventilation settings > Imp window switches:
Factory setting --- (no influence by window switches)
DHW (QAX913 only)
DHW operating mode
To change the DHW operating mode, press the DHW button on the central
apartment unit. In the DHW pop-up window, you can now select the required
DHW heating mode:
Auto
DHW is heated up to the Normal setpoint, the Reduced set-
point or the Protection setpoint in accordance with the DHW
time program or the holiday program (factory setting).
Normal
DHW temperature is maintained at the Normal setpoint.
Reduced
DHW temperature is maintained at the Reduced setpoint.
Protection
DHW temperature is maintained at the frost Protection set-
point.
The selection can also be made via the menu:
Main menu > DHW > Operating mode > Preselection:
Forced DHW charging
A long push on the central apartment unit’s DHW button triggers a
one-time forced charge of the DHW storage tank to the Normal
setpoint. While forced charging is active, the DHW symbol on the
display flashes
.