Siemens Desigo RXB Technical Manual page 225

Connection diagram
Connection variants for
valve actuators
List of equipment
Note
Siemens
Building Technologies
2) 2)
B2 D1 D2
T
1 2 3 4 5 6
19 19 21 21
AC 230 V
N
L
Radiator
Thermal
Motorized
Bus
Ref. Description
N1
Room controller.
R1
Room unit
B1
Outside air temperature sensor via KNX bus.
B2
Room temperature sensor.
D1
Window contact
D2
Presence detector
YH.1
Heating valve: Thermal actuator, 2-position (PDM) control
YH.2
Heating valve: Motorized actuator, 3-position control
YH.3
Heating valve with bus actuator.
2) Type of operation and allocation to inputs D1 and D2 can be selected.
Identical devices must not be connected to both inputs.
3) The thermal valves operate with the same sequence but are driven alternately. Observe the max.
simultaneous load on outputs Y1 ... Y4: Max. 9.5 VA each (see data sheet 3874).
A current list of compatible devices is available in the DESIGO RX hardware overview
(N3804).
RXB application library (KNX)
CLC & RAD – chilled ceiling and radiator applications from CC-02
RAD01 – LTHW radiator
YH.2 3)
M
YH.1 3) YH.1 3)
R1
QAX...
7 8 9 10 11 12 13 14 15 16
2)
.
2)
.
YH.3
M
KNX
N1
17 18
RXB24.1
Y1 Y2 Y3
YH YH --
YH YH --
-- -- --
3)
.
3)
.
CM110671en_02
T
B1
Y4
--
--
--
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14.03.2008