Siemens Desigo RXB Technical Manual page 426

Connection diagram
List of equipment
Note
24/52
Siemens
Building Technologies
2)
D3
T
2)
2)
YH
B1 D1 D2
T
1 2 3 4 5 6 7
19 19 21 21 22 23 24
7)
F1
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
D3
Safety thermostat, electric heating coil.
Q1
1- ... 3-speed fan.
YR
Electric reheater
F1
External fuse, max. 10 A
YH,
Heating/cooling valve actuator, thermal, 2-point (PDM) control
YC
2) Type of operation and allocation to inputs D1 and D2 can be selected.
Identical devices must not be connected to both inputs.
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).
6) The output of the electric heating coil at output Q44 must not exceed 1.8 kW.
7) External fuse, max. 10 A (protects pcb tracks).
A current list of compatible devices is available in the DESIGO RX hardware overview
(N3804).
RXB application library (KNX)
FNC05 – Four-pipe fan coil with electric reheater
3) 3)
YC
R1
QAX...
8 9 13 14 15 16
25 26 27 28
6)
YR
4)
Q1
2)
.
2)
.
6)
.
7)
.
FNC – Fancoil-Applikationen aus FC-10, FC-11, FC-12
KNX
N1
17 18
RXB22.1
3)
.
CM110672en_03
30.11.2007