Room Control Combination Function; Application Examples - Siemens RXB Series Basic Documentation

Introduction
Application example 1
Controller 1 and 2,
both type RMH
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Siemens
Building Technologies
9.3

Room control combination function

9.3.1

Application examples

The "Room control combination" function can be used to link two RM... controllers
so that they operate with the same operating mode and the same room setpoint.
The two controllers must belong to the same "Geographical zone (apartm.)".
If one of the two controllers is an RMU controller, this controller always becomes
the "Room controller master". If two RMU or RMH controllers are used in the same
application, one must be defined as the master and the other as a slave.
Radiator and floor heating
The "Room control combination" function, for example, allows for e.g. heating a
room with radiator heating and floor heating. Exchanging room temperature and
operating mode over the KNX bus allows for a joint control strategy with the
following aim:
Optimum control (e.g. boost enabled at the correct time).
Same room operating mode for both controllers (time switch and holiday/special
day program, manual override).
Adjustable room influence.
QAW740
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Two RMH controller are required for application "Radiator and floor heating in the
same room". Controller 1 is defined as master room controller, and Controller 2 as
slave room controller.
The first step is to set the zone addresses of the "Geographical zone (apartm.)" in
the controllers.
KNX bus communications
Appendix
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For internal use only
CE1P3127en
2013-04-08