Siemens Desigo RXB Technical Manual page 451

Four-pipe fan coil, controlled by one damper
Plant diagram
N1 Room controller.
R1 Room unit with temp.
sensor.
B1 Return air sensor.
D1 Window switch.
D2 Presence detector.
Q1 Fan (1... 3-speed).
YM 3-position damper actuator.
Operating diagrams
Y Output signal.
TR Room temperature.
SpH Effective heating setpoint.
SpC Effective cooling setpoint.
H Heating sequence.
C Cooling sequence.
YM Damper actuator.
Q14 Fan speed 1.
Q24 Fan speed 2.
Q34 Fan speed 3.
Siemens
Building Technologies
• Heating with LTHW and cooling with CHW.
• 3-position damper actuator.
• Automatic or manual fan control.
YM
N1
K N X
R
Y [%]
H N
100
0
SpH SpC
Y
H
Q34
Q24
Q14
SpH SpC
RXB application library (KNX)
FNC20 – Four-pipe fan coil, controlled by one damper
Q1
T
B1
T
R1 D1
C
YM
TR [°C]
C
TR [°C]
FNC – Fancoil-Applikationen aus FC-10, FC-11, FC-12
FNC20
K NX
D2
CM110672en_03
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