Basic Documentation

43/256
Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 5 General functions, fundamentals 2017-09-29
5 General functions, fundamentals
5.1 Time switch
For each of the 3 heating circuits, DHW heating and the DHW circulating pump, there is
a time switch available.
In "Automatic" mode, the respective function block operates according to this time
switch. A switching program can be defined for every weekday.
Using the program entered, the time switch controls the change of operating modes
and the relevant setpoints.
Operation of the time switch is described in Operating Instructions B3133.
5.1.1 Communication
If the RMH760B is connected to other controllers via communication, the 7-day time
switch can be assigned to different controllers, or it can be used by a single controller.
This applies to both the time switches for the heating circuits and the time switch for
DHW heating. The time switch for the circulating pump cannot be made available to
another controller and it cannot be adopted by some other controller.
The following settings must be made, depending on the required operating mode:
Required time switch operation
Operating line
Setting
Autonomous
Geographical zone (apartm.)
----
Time switch slave (apartm.)
----
Master
Geographical zone (apartm.)
1…126
Time switch slave (apartm.)
----
Slave
Geographical zone (apartm.)
Any
Time switch slave (apartm.)
1…126
The following combinations are possible:
Effect
Description
Diagram
Autonomous
The time switch only acts locally on this
controller. It has no impact on other
controllers on the bus.
Slave
The time switch in this controller is not active.
An external time switch is active, which can
be selected by setting the time switch
reception zone. Every time switch only acts
in its own zone, and every zone only has one
time switch. The external time switch must be
set as the time switch master.
Master
The time switch in this controller is active. It
acts on all other controllers located in the
same zone. The zone must be set both at the
master and the slaves. The receivers are set
as slaves.
3140Z08
Heating circuit and DHW circuit time switches cannot communicate with one another,
which means that they do not operate in master-slave mode.
Also, the master-slave settings of the heating circuits and those of DHW are not the
same.