Heating And Cooling Demand - Siemens Desigo RXB Technical Manual

Note
ETS3 Professional
ACS Service
HandyTool
Parameter
Heating demand signal
Cooling demand signal
K N X
CO
R
Siemens
Building Technologies
11.5

Heating and cooling demand

To provide the required heating or cooling energy, the heating and/or cooling demand
from each room is transmitted to the building automation and control system.
Refer to the application example in section 3.4 for more detailed information on
heating/cooling demand.
In the case of changeover applications the real demand is transmitted, independent
from the state of the changeover input (therefore it might be that a controller demands
heat, if c/o = cooling and room temp < SpH).
With ETS3 Professional, this function can be disabled in the room controller.
This parameter is not supported.
See parameters in the last column of the table below
Description
Heating demand transmitted to the BAC system.
Cooling demand transmitted to the BAC system.
Parameter
*131, *132
The heating or cooling demand can be evaluated via the following S-mode
communication object.
Energy demand room (Output communication object)
Flags Type
R W C T U
1 0 1 1 0 6.001
DPT_Percent_V8
In LTE mode the energy demand is determined by two signals:
Heating coil energy demand (Output)
Possible partner function blocks
EnergyDemAH
154 AHDTTU
Air Heater Energy Demand
Distr. zone, heating
Transformer TU
Cooling coil energy demand (Output)
Possible partner function blocks
EnergyDemAC
217 ACDTTU
Air Cooler Energy Demand
Distr.zone, cooling
Transformer TU
RXB (KNX) application library
General and central functions
Range
0 = disabled, 1 = enabled
Send heartbeat Value
yes
FNC Description of functions for FC-10, FC-11, FC-12
HandyTool
*131
*132
Basic setting
1 = enabled
–100...100% : (-128 ... +127)
–100% = Full heat
+100% = Full cool
Known partner devices
Siemens:
Synco RMH760
RMU710 / 20 / 30
RMB795 / RMS705
Known partner devices
Siemens:
Synco RMU710 / 20 / 30
RMB795 / RMS705
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