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Siemens
RXB application library (KNX)
FNC – Fancoil-Applikationen aus FC-10, FC-11, FC-12 CM110672en_0
3
Building Technologies
FNC08 – Four-pipe fan coil with room supply air cascade
30.11.2007
4)
1
2
3
Q1
N
L
AC 230 V
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
17 18
M
D1
GND
D2
Y1
G
Y2
CP–
CP+
B1
25 26 27
RXB21.1
Q1
3
Q1
4
Y3
G
Y4
Q2
4
Q3
4
28
N1
M
B
B1
T
D1
2)
D2
2)
2
1
4
3
QAX...
R1
KNX
103
8
5
A
06
Y1
G
Y2
YC
3)
M
YH
3)
19
21
N
L
N
21
L
CE
–
CE
+
19
CE
–
CE
+
N.C.
Y1
G
Y2
M
Ref.
Description
N1
Room controller.
R1
Room unit
B1
Supply air temperature sensor.
D1
Window contact
2)
.
D2
Presence detector
2)
.
Q1
1- or 3-speed fan
4)
.
YH
Heating valve actuator, motorized,
3-position control
3)
.
YC
Cooling valve actuator, motorized,
3-position control
3)
.
2) Type of operation (N/O or N/C) can be selected.
3) Do not exceed the max. simultaneous load on outputs Y1 ... Y4: 9.5 VA (see data sheet 3873).
4) Do not connect the fans in parallel (or use cut-off relays).
A current list of compatible devices is available in the DESIGO RX hardware overview
(N3804).
Connection diagram
List of equipment
Note