Siemens Desigo RXB Technical Manual page 419

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)
.
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