User Manual

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Siemens Synco™ living Operating instructions CE1B2707en
Building Technologies Central apartment unit QAX910 23.08.2008
Plant operating mode
The individual rooms can be configured merely for heating/cooling operation,
or for automatic changeover between the two operating modes.
Main menu > Rooms > Room X > Room operating mode
> Plant optg mode:
Auto The plant operating mode is changed over automatically based
on room temperature and mixed outside temperature.
Heating The plant is in heating mode.
Cooling The plant is in cooling mode.
Plants with rooms featuring controllable air conditioners can heat or
cool the rooms independent of each other.
The individual air conditioners are controlled via infrared interface and
a Zennio module (KNX S-mode).
Room number 1 2 3 4 5 6
Room name
Factory setting Auto Auto Auto Auto Auto Auto
Setting  Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
Room number
7 8 9 10 11 12
Room name
Factory setting Auto Auto Auto Auto Auto Auto
Setting  Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
 Auto
 Heat.
 Cool.
Auto = Automatic changeover between heating and cooling
Heat. = Heating
Cool. = Cooling
H/C-changeover in Auto plant operating mode
In case of automatic changeover, the central apartment unit checks first the
room temperature and compares it to the average value from the heating
Comfort setpoint and the cooling Comfort setpoint ((H Cw + K Cw) / 2).
If the room temperature is at least 0.5 °C below the average value, heating
mode is released
If the room temperature is at least 0.5 °C above the average value, cooling
mode is released
H
H Heating mode
K Cooling mode
H Cw Heating Comfort setpoint
K Cw Cooling Comfort setpoint
TR Room temperature