Siemens KNX RDG400KN Basic Documentation page 44

Notes
Setting the sequence and the control outputs
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Without a valid bus signal for changeover air, the air volume is only increased for
cooling.
2-position heating/cooling coil
Y
100%
Vmax
Vmin
0%
Changeover water
Y
SDH
H
7.0 mm
ON
YHC
w
OFF
dz
20.1 mm
Y Output signal
TR Room temperature
w Comfort setpoint when heating sequence active
(w) Comfort setpoint when cooling sequence active
H Heating sequence
C Cooling sequence
YV Volume flow rate
· The diagrams only show the PI controller's proportional part
· Switching between heating and cooling depends on the setpoints and the room
temperature (see section 3.6.2)
Refer to sections 0, 3.6.1 and 3.7.
RDG400KN,RDG405KN Basic documentation
Modulating heating/cooling coil
XpC
C
5.2 mm
100%
Vmax
YV
Vmin
TR [°C]
SDC
C
4.9 mm
100%
YHC
(w)
TR [°C]
XpH
XpC
Vmin
Vmax Maximum volume output
SDH
Y
0%
Changeover water
Y
XpH
H
10.0 mm
YHC
w
0%
dz
13.5 mm
Proportional band heating
Proportional band cooling
Minimum volume output
Switching differential heating
XpC
C
5.2 mm
YV
TR [°C]
XpC
C
4.9 mm
YHC
(w)
TR [°C]
CE1P3192en
2019-04-12