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Connection diagram
List of equipment
Note
Siemens
Building Technologies
YH.2
B1
D1
2)
D2
2)
YH.1
T
1
2
3
4
5
6
7
19
19
21 21
AC 230 V
N
L
Ref.
Description
N1
Room controller.
R1
Room unit
B1
Return air temperature sensor, room temperature sensor.
D1
Window contact
D2
Presence detector
Q1
1- or 3-speed fan
YH.1
Heating valve actuator, thermal, 2-position (PDM) control
YH.2
Heating valve actuator, motorized, 3-position control
YC.1
Cooling valve actuator, thermal, 2-position (PDM) control
YC.2
Cooling valve actuator, motorized, 3-position control
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).
RXB application library (KNX)
FNC04 – Four-pipe fan coil
3)
YC.2
3)
M
M
3)
YC.1
3)
R1
QAX...
8
9
10 11 12 13 14 15 16
25 26 27
28
4)
Q1
2)
.
2)
.
4)
.
FNC – Fancoil-Applikationen aus FC-10, FC-11, FC-12
KNX
N1
17 18
RXB21.1
3)
.
3)
.
3)
.
3)
.
CM110672en_03
30.11.2007
17/52
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