Siemens Synco700 RMK770 Documentation Handbook page 146

Extra configuration
Virtual heating circuit
Outside sensor
Outputs
Inputs
Heat requisition heating
circuit
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Building Technologies
HVAC Products
The function block is activated
• by assigning an output to a terminal, or
• by setting "Heating circuit = Active"
Main menu > Commissioning > Extra configuration > Heating circuit
Operating line
Heating circuit
Using setting "Heating circuit = Active", a virtual heating circuit can be activated, which
predefines heat demand according to the outside temperature or the heating curve (for
that purpose, a measured value of the outside temperature must be available), without
having this measured value available with the flow sensor and the actuating devices.
By assigning the relevant inputs (flow temperature sensor) and outputs (heating circuit
pump, mixing valve) to terminals, a "real heating circuit" will be activated.
For more detailed information about the virtual heating circuit, refer to section 8.2
"Weather-compensated setpoint for boiler sequencing".
A weather-compensated heating circuit necessitates an outside temperature. A sensor
can be configured in Main menu > Commissioning > Extra configuration > Miscellaneous >
Inputs > Outside sensor .
The outside temperature can also be acquired via Konnex bus. For more detailed in-
formation, refer to subsection 13.3.2 "Outside temperature".
Main menu > Commissioning > Extra configuration > Heating circuit > Outputs
Operating line
Heating circuit pump
Heating circuit pump B
Mixing valve 3-pos
Mixing valve modulating
Main menu > Commissioning > Extra configuration > Heating circuit > Inputs
Operating line
Flow sensor
Room sensor
Return sensor
[Heating circuit pump] overload
[Heat circuit pump B] overload
Flow signal pump
Room setpoint adjuster abs
Room setpoint adjuster rel
Room operating mode
Timer function
The internal heating circuit can be connected directly to the main distributor or after the
primary controller (if present).
This can be parameterized by making the following setting:
Main menu > Commissioning > Extra configuration > Heating circuit > Heat req heat circ
Operating line
Heat req heat circuit acting on
Boiler Sequence Controller RMK770
10 Heating circuit control
Range
Inactive/ Active
Adjustable values / remarks
Adjustable values / remarks
Return temperature limitation
Fault input heating circuit pump
Flow supervision heating circuit pump
External room temperature setpoint adjuster
with absolute room temperature setpoints
External room temperature setpoint adjuster
with room temperature setpoint readjust-
ment of ±3 K
Comfort extension
Range
Main distributor / Pri-
mary controller
Factory setting
Inactive
Factory setting
Main distributor
CE1P3132en
01.03.2005