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Siemens
Synco™ living Operating instructions
CE1B2707en
Building Technologies
Central apartment unit QAX910
23.08.2008
To change over between the plant operating modes heating and
cooling, the preset H/C changeover locking time must be expired.
This avoids frequent changeover.
The central apartment unit checks the mixed outside air temperature as a
second criterion and compares it to the outside temperature heating limit and
the outside temperature cooling limit (see page 31).
H
H Heating
mode
K Cooling
mode
NO
Heating and cooling mode locked
HG
Outside temperature heating limit
KG
Outside temperature cooling limit
TA gem
Mixed outside temperature
Changeover between operating modes heating and cooling takes place only
after both criteria are met.
Room operating mode during absence
The room operating mode required during absence (refer to page 27) can be
selected for each room.
Main menu > Rooms > Room X > Room operating mode
> Optg mode absence:
Room
number
1 2 3 4 5 6
Room
name
Factory setting
Setting
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