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Siemens
Synco™ living Operating instructions
CE1B2707en
Building Technologies
Central apartment unit QAX910
23.08.2008
Operating mode via contact
Specify the type of DHW operating mode the controller is to change over to
when an external operating mode contact is connected (e.g. teleswitch for
remote operation by phone).
Operating mode changeover via external contact overrides all other operating
mode settings.
The input function “operating mode contact” must be configured during
commissioning.
The same operating mode contact is used for heating / cooling, venti-
lation and DHW.
Main menu > DHW > Operating mode > Optg mode contact:
Factory setting
---
Your Setting
--- (no influence, by time switch program)
Normal
Reduced
Protection
DHW temperature setpoint
If the DHW temperature is too high or too low, you can change the setpoint:
Main menu > DHW > Setpoints > Normal setpoint:
Main menu > DHW > Setpoints > Reduced setp:
Normal setpoint
Reduced setpoint
Factory setting
55 °C
40 °C
Your setting
DHW time switch
In DHW operating mode “Auto“, the central apartment unit controls DHW
charging in accordance with the DHW time program.
Main menu > DHW > Time switch > Weekday X:
You can set up to 6 switching points for each weekday plus one special day.
You can also define the DHW temperature setpoint (Normal or Reduced) to be
used at each switching point.
The switching points can be set, deleted or copied to some other weekday.
The settings are made analogously to the room time switch settings (refer to
page 37).
The central apartment unit is supplied with the following factory set-
tings for all weekdays: 05:00 for changeover to the Normal setpoint,
22:00 for changeover to the Reduced setpoint.
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