Commissioning Instructions

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Siemens Synco™ living CE1C2740en
Building Technologies Commissioning the system 13.12.2010
Minimum limitation of the return temperature
Minimum limitation of the return temperature (maintained
boiler return temperature) ensures protection of the boiler
by preventing the return temperature from falling below a
certain level. Minimum limitation is accomplished by re-
ducing the flow temperature setpoint. As a result, a smal-
ler volume of boiler water is supplied to the room group
and more to the return via the bypass.
Maximum limitation of the return temperature
Maximum limitation of the return temperature prevents
the return temperature from exceeding a certain level,
thus ensuring better efficiencies of boilers and heat
pumps.
Maximum limitation is accomplished by supplying a smal-
ler volume of boiler water to the room group (valve posi-
tion).
Main menu > Commissioning > Basic configuration
> Room groups > Room group X > Return temp limit:
--- Inactive – no return temperature limitation
(factory setting).
Minimum Minimum limitation of the return temperature.
Maximum Maximum limitation of the return temperature.
Configure domestic hot water (QAX913 only)
2707Z30
If you want the central apartment unit
to directly control DHW charging, ac-
tivate the required DHW plant com-
ponents (DHW sensor, pump/valve,
electric immersion heater).
If you want KNX TP1 to remotely
control external DHW heating, acti-
vate ”Operation external DHW“.
If there is a request for DHW, the room group pumps are not put into
operation. For this reason, DHW must from a hydraulics point of view
always be installed upstream of the room groups.