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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
ONWORKS® 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)
S/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
pplication 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
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