Siemens Synco 700 - Limitation of the Return Temperature

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Building Technologies Modular Heating Controller RMH760B CE1P3133en
HVAC Products 9 Heating circuit control 05.02.2007
3131D38
off
on
Pump
TR
TRx
TRw
TRw + TR - TRSD
TRw + TR
TR
on
off
TRSD
TRw
TR
t
t
Time
ΔTR Temperature differential for switching the heating circuit off
TR Room temperature
TRSD Temperature differential for switching the heating circuit on
TRw Room temperature setpoint
TRx
Actual value of room temperature
Main menu > Commissioning > Settings > … or
Main menu > Settings > Heating circuit 1 (or 2 or 3) > Limitations
Operating line Range Factory setting
Room limitation increase ---- / 0.5…5.0 K
----
Room lim switching differential 0.2…5.0 K
0.2 K
The room limitation increase is used to set the temperature differential for switching off
the heating circuit.
The room limitation switching differential is used to set the temperature differential for
switching on the heating circuit.
9.8.2 Limitation of the return temperature
The heating circuit’s mixing valve can be used to provide maximum limitation of the
return temperature. Minimum limitation is not supported. By contrast, the boiler sup-
ports minimum limitation with certain restrictions for all consumers. For more detailed
information, refer to subsection
9.8.3 “Minimum limitation of the return temperature“.
3133S77
Y1
B1
M1
B7
Y1
B1
M1
B7
3133S79
Main controller
Primary controller
B1
Flow temperature sensor
B7
Return temperature sensor
M1 Heating circuit pump
Y1 Heating circuit mixing valve
Settings
Room limitation increase
Room lim switching differ-
ential