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Siemens
RXC20, RXC21, RXC22 – Room controllers
CA2N3834en_09
Building Technologies
2013-06-16
Cable connections
Plug-in terminal blocks
Solid conductors
Stranded conductors without connect-
or sleeves
Stranded conductors with connector sleeves
(DIN 46228/1)
Rising cage terminals
1 x 0.2 ... 2.5mm2
or 2 x 0.2 ... 1.0 mm2
1 x 0.2 ... 2.5mm2
or 2 x 0.2 ... 1.5 mm2
1 x 0.25 ... 2.5mm2
or 2 x 0.25 ... 1.0 mm2
Max. tightening torque
0.6 Nm
Single cable lengths
see also installation guide, CA110334
Signal inputs D1, D2
max. 100 m with diameters
0.6 mm
Measured value input B1
max. 100 m
AC 24 V triac outputs, Y1 ... Y4
max. 100m where A
1.5 mm
2
Relay outputs Q14, Q24, Q34, Q44
depends on load and local regulations
Interface to room unit
max. 115 m where A= 0.75 mm
2
(including tool connecting cable)
Cable type
4-core, twisted pair, unscreened
L
ON
W
ORKS
® bus
max. 500 m
Cable type
see installation guide, CA110334
Tool connecting cable
max. 3 m
Housing protection standard
Protection standard to EN 60529
IP30 with terminal cover fitted and
wall mounted without DIN rail
IP20 for all other mounting arrangements
Protection class
Suitable for use in systems with protection class I or II
Ambient conditions
Operation
class 3K5 as per IEC 60721-3-3
Temperature
0 ... 50 °C
Humidity
< 85 % r.h.
Transport
class 2K3 as per IEC 60721-3-2
Temperature
– 25 ... 65 °C
Humidity
< 95 % r.h.
Standards and directives
- Product standards
EN 60730
marking
- EMC
Immunity (industrial & residential)
Emission (residential)
2004/108/EC
EN 60730-1
EN 60730-1
- Low Voltage Directive
Electrical safety
2006/95/EC
EN 60730-1
- RoHS
Techn. RoHS proof
2011/65/EU
EN 50581
Electronic individual zone control equipment
EN 15500
UL
compliance
UL916
C-Tick conformity (EMC)
AS/NZS 61000-6-3
eu.bac
Meets the requirements for eu.bac certification
See product list at:
http://www.eubaccert.org/ licences-by-criteria.asp
Type License
Application Control
accuracy [K]
RXC20.5 20737
Fancoil 2 pipes
heating / coooling
0.2 / 0.1
Heating
systems
(radiator)
0.3
Electric
convectors
0.2
Chilled ceiling systems
0.3
RXC21.5 20705
Fancoil 2 pipes
heating / coooling
0.2 / 0.1
Fancoil 2 pipes / 2 wires
heating / coooling
0.2 / 0.1
Fancoil 4 pipes
heating / coooling
0.2 / 0.1
Chilled ceiling systems
0.3
Environmental compatibility
The product environmental declaration
CA2E3834 contains data on RoHS compliance,
materials composition, packaging, environmental
benefit, disposal
ISO 14001 (Environment)
ISO 9001 (Quality)
Dimensions
See dimension diagrams
Weight
Excluding packaging
0.59 kg
