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Siemens
RDU341 Basic Documentation
CE1P3172en
Building Technologies
2015-06-08
3.10.4 Example of heating and cooling demand zone
The building is equipped with Synco controls on the generation side and RDU /
RDG thermostats on the room side.
RMH760
RMH760
RMB795
Konnex TP1
RDG...
RDU...
RDF...
T
T
T
T
1
2
P
3
1
7
1
Z
0
1
Heat requistion
Heat demand
Heat distr zone 1
Heat source
Controller 1
Controller 2
Controller 3
Controller 4
Controller 5
Controller 6
Controller 1
Controller 2
Controller 3
Controller 4
Controller 5
Controller 6
Heating circuit
fan coil
Fan coil
room A
VAV box
room B
Fan coil
room C
DHW heating
Heat demand
Heat demand
Heat demand
Heat demand
Heat requistion
Heat distr zone
source side: 1
Heat distr zone 2
Heat distr zone 2
Heat distr zone 2
Heat distr zone 2
Setting values
M
V
M
V
T
T
T
In the case of a typical application, the individual RDU / RDG room thermostats –
when used with the RMB975 central control unit – signal their heat demand directly
to the primary controller (in the above example to the RMH760).
(1) and (2) designate the numbers of the distribution zone.
·
This type of application can analogously be applied to refrigeration distribution
zones
·
If no 2-pipe fan coil is used, heat and refrigeration demand signals are sent
simultaneously to the primary plant
Explanation relating to
the illustration
Notes: