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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 9 Heating circuit control 2017-09-29
9.3.7 Control priorities in the heating circuit
The following illustration shows the priorities of the different interventions via digital
inputs and via the KNX bus as well as operation on the controller or the QAW740 room
unit.
Lower numbers indicate higher priorities.
10
4
Off, Auto
On, Off
On, Off
9
On, Off
Cmf, Pcf, Eco, Prt
11
1
On, Off
3
5
8
7
2
On, Off
12
3133Z14
On, Off
6
Auto, Cmf,
Pcf, Eco, Prt
Cmf, Pcf, Eco, Prt
Timer button
(pushbutton at
digital Input)
Settings calendar
Plant operating mode selector
Special day, holidays
Resulting operating mode
Cmf, Pcf, Eco, Prt
Holiday
contact
Special day
contact
Pump, mixing valve
Interventions
via digital inputs
Operating on the controller,
or room unit, or via bus
Wiring test
Calendar
Switching program
Resulting operating mode
Time program Cmf, Pcf, Eco, Prt
Settings 24-hour program,
holiday/special day program
Room
operating
contact
Room operating mode selector
on RMH760B controller
On, Off
Timer button
Presence button
User
requisition
From user requisition room
(RMU7... controller)
Heating circuit
control (part plant)
Resulting control command
pump, mixing valve
Timer button or mode button
on QAW740 room unit
Time switch
Priority
Name
Explanation
1
Wiring test
In the wiring test (highest priority), the plant
components can be directly controlled, independent of
all other settings
The controller-internal safety functions will
be overridden!
2
External master
The plant operation selector has the second highest
priority and can only be overridden by the controller’s
frost protection function
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