Operating Instructions

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Siemens RXB application library (KNX) RXB – Fan coil applications from FC-10, FC-11, FC-12, FC-13 CM110672en_05
Building Technologies 3BFNC04 – Four-pipe fan coil 2013-06-07
2 1 4 3
QAX...
R1
10385A03_01
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
Q13 Q14
Y3 G Y4
Q24 Q34
28
19 21
N L N
21
L
CE– CE+
19
KNX
Y1
G
Y2
YH.2
3)
M
M
B
B1
T
Y1
G
Y2
YC.2
3)
M
D1
2)
D2
2)
YC.1
3)
YH.1
3)
1 2 3
Q1
N
L
AC 230 V
N1
4)
CE– CE+
N.C.
M
YH.3
3)
M
YC.3
3)
G0
G
Y
YC.4
M
KNX
RXB39.1
N1
D1
2)
D2
2)
2 1 4 3
QAX...
R1
10672A13
CP – CP + CE
–
CE +
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
M D1 GND D2 B1
23 24 25 26
Q13 Q14 Q33
19 19 21
N L N
21
L
CE
–
CE +
B2
29 30 31 32
D3 GND D4 N.C. YC1 G0 G YC2 G0 YC3
27
Q34 N.C.
M
B
T
M
B
T
B1
N
L
AC 230 V
0
Y
Q2
D3
N
L
G0
G
Y
YH.4
M
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).
Connection diagrams