Technical data

49 / 78
Siemens RDG400KN Basic documentation CE1P3192en
Building Technologies Functions 20 Jul 2010
Air distribution zone
Zone = ---, 1...31
This Distribution zone is for air applications (VAV, CAV). Information
related specifically to the air handling system is exchanged within this
zone (e.g. air demand). This zone also includes a Synco device to
process the information (e.g. RMU7xx).
Outside temperature
zone
Zone = fix 1
Outside temperature received in outside temperature zone 1 will be /
can be displayed on the room thermostat when commissioned
accordingly (parameter P07 = 2).
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
P3171Z01
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
MV MV
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: