Data Sheet for Product

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Siemens RCU50... Room Thermostat CE1N3045en
Smart Infrastructure 2021-12-08
A changeover switch can be connected to status input D1–GND. When the switch
closes its contact (caused by an open window, for instance), the operating mode will
change from normal operation or standby to energy saving mode (provided DIP switch
no. 1 is set to ON), or from normal operation or energy saving mode to standby
(provided DIP switch no. 1 is set to OFF).
The operating action of the switch (N.C. or N.O.) can be selected.
Type summary
Type reference Features
RCU50
*)
Without operating mode selector
RCU50.1
*)
With operating mode selector
RCU50.2 With manual heating / cooling changeover
switch
*) Type is not orderable any more
Ordering
When ordering, please give name and type reference, e.g. room thermostat RCU50.
Temperature sensor, changeover mounting kit, VAV compact controller and valve and
damper actuators are to be ordered as separate items.
Equipment combinations
Type of unit
Type reference
Data sheet
*)
Temperature sensor
QAH11.1
1840
Changeover mounting kit
ARG86.3
1840
VAV compact controller
GDB181.1E/3
GLB181.1E/3
3544
Motoric actuator (radiator valve)
SSA61...
4893
Motoric actuator (small valve 2,5 mm)
SSP61…
4864
Motoric actuator (small valve 5,5 mm)
SSB61...
4891
Motoric actuator (valve 5,5 mm)
SSC61…
4895
Motoric actuator (valve 5,5 mm)
SQS65…
4573
Air damper / ball valve actuator
GDB161...
GLB161...
GCA161.1E
GBB161...
GIB161.1E
4634
4634
4613
4626
4626
*) The documents can be downloaded from http://siemens.com/bt/download.
Mechanical design
The unit consists of two parts:
 A plastic housing which accommodates the electronics, the operating elements and
the built-in room temperature sensor
 A mounting base
The housing engages in the mounting base and snaps on.
The base carries the screw terminals. The DIP switches and the potentiometer are
located at the rear of the unit.
Operating mode
changeover switch
(RCU50 and RCU50.1)