User Manual

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Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_12
Building Technologies 2015-12-23
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
LONWORKS® 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 to EN60730-1
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, directives and approvals
Product standard EN 60730-1
Automatic electrical controls for household
and similar use
Electromagnetic compatibility (Applications)
For use in residential, commerce, light-
industrial and industrial environments
EU conformity (CE)
CA2T3834xx *)
UL certification (US)
UL 916, http://ul.com/database
RCM-conformity (EMC)
CA2T3834en_C1 *)
EAC conformity
Eurasia conformity
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
Product environmental declaration (contains
data on RoHS compliance, materials composi
-
tion, packaging, environmental benefit, disposal)
CA2E3834 *)
Dimensions
See dimension diagrams
Weight
Excluding packaging
0.59 kg
*) The documents can be downloaded from
http://siemens.com/bt/download.