Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 9 Heating circuit control 2017-09-29
3131S60
Solution:
Using the extra function "Room control combination", one of the 2 heating circuits as
the master can predefine the operating mode for the second heating circuit, which is
configured as the slave.
If required, the setpoints can also be adopted by the master. This is accomplished with
the configuration "Slave external setpoint".
Requirement:
A heating circuit covers the basic load and a ventilation plant the individual load (heat
demand) in the space.
This application can also accommodate a common time switch or common preselected
operating modes, if required.
3131S61
Combination of ventilation and
heating
Solution:
Using the extra function "Room control combination", the heating circuit can be
operated as the slave and receives the room operating mode and the time program
predefined by the ventilation controller. It can be selected whether the setpoints for the
heating circuit shall be adopted externally (to be adjusted on the ventilation controller)
or internally (to be adjusted on the heating controller).
Heating circuit and ventilation must be assigned to the same geographical zone. A
room unit, if present, must also be assigned to the same geographical zone.
The ventilation controller always assumes the function of the room control master.
A room unit, if present, always acts on the room control master.
During summer operation (heating circuit switched off via the heating limit), the
ventilation controller adopts the sustained mode.
Summer / winter operation changeover is ascertained via the heating limit (refer to
subsection 9.5.4) and sent to the ventilation controller via bus
The ventilation controller’s room temperature sensor must not be installed in the extract
air duct! Otherwise, functions "Room temperature influence" and "Optimization with
room temperature" are not allowed to be activated.
Example:
Ventilation and heating
⇒
Summer operation
Important