User Manual

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Siemens Synco™ living CE1B2740en
Building Technologies Central apartment unit QAX9x3 13.12.2010
Changeover to electric immersion heater
Select whether in summer operation the DHW should be heated by the elec-
tric immersion heater.
Main menu > DHW > Settings > Change el imm heat:
Yes When the plant switches to summer operation (see page 34), the
DHW is heated by the electric immersion heater.
This means that
heat generation can be switched off in the summer.
(factory setting)
No DHW is heated by the heat source in the summer also. This
means that heat generation in the summer remains in operation
(emergency operation).
If no charging pump is defined, the electric immersion heater is al-
ways released (no charging via the heat source).
Supervision of the DHW temperature
The controller is capable of continuously supervising the DHW temperature. If
the DHW temperature exceeds “Max temp alarm“, or falls below “Min temp
alarm“, an error message is displayed.
When using setting “----“, temperature supervision is deactivated.
Main menu > DHW > Settings > Max temp alarm:
Factory setting --- (none)
Main menu > DHW > Settings > Min temp alarm:
Factory setting --- (none)
Switching groups (QAX913 only)
Operate switching groups
Switching groups 1 – 4 can be operated via the 4 pairs of softkeys on the cen-
tral apartment unit.
The functions of the switching groups (e.g. switching or dimming lights, open-
ing or closing blinds, calling up info pages or scenes) were defined when the
plant was commissioned.
Switching groups 5 – 8 have no buttons for direct access. Manual trig-
gering of these switching group functions is only possible via the re-
spective operating lines on the central apartment unit.