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Siemens
RDG400KN,RGD405KN Basic documentation
CE1P3192en
Building Technologies
2017-02-17
Without a valid bus signal for changeover air, the air volume is only increased for
cooling:
2-position radiator/floor heating
Modulating radiator/floor heating
Y
YR
TR [
癈
]
dz
m
ax
m
in
Y
0%
100%
TR [
癈
]
XpC
YV
C
Vmin
Vmax
ON
OFF
W
SDH
Y
0%
100%
YR
TR [
癈
]
XpH
W
dz
m
ax
m
in
Y
0%
100%
TR [
癈
]
XpC
YV
C
Vmin
Vmax
Y
Output signal
TR
Room temperature
W
Effective setpoint Comfort
H
Heating sequence
C
Cooling sequence
YV
Volume flow rate
YR
Radiator/floor heating
XpH Proportional band heating
XpC Proportional band cooling
Vmin Minimum volume output
Vmax Maximum volume output
SDH Switching differential heating
∂
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)
Setting the sequence and the control outputs
Refer to sections 0, 3.6.1 and 3.7.
Notes