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2.2
Scope of delivery
1
B
B
U
U
S
S
Fig. 2
Scope of delivery
[1] User interface
[2] Technical documentation
2.3
Technical data
95
Fig. 3
Dimensions in mm
Rated voltage
8 ... 16 V DC (2-wire BUS/EMS 2
and OpenTherm)
Rated current
5 ... 23 mA (2-wire BUS/EMS 2 and
OpenTherm)
BUS interface
2-wire BUS, EMS 2, OpenTherm
Control range
5 ... 30 °C
permissible ambient
0 °C ... 50 °C
temperature
Power reserve
Protection class
III
IP-Rating
IP20
Table 1
Technical data
CR 50
2
0010008715-001
25
33
6 720 809 984-08.1O
4 h
2.4
Temperature sensor characteristics
°C
°C
8 25065 32
9043
14 19170 38
7174
20 14772 44
5730
26 11500 50
4608
Table 2
Resistance values for flow and hot water
temperature sensors
2.5
Applicability of the technical documentation
Information in the technical documentation about heat
sources, heating controllers or the BUS apply also to the
present user interface.
2.6
Additional accessories
No other BUS modules and user interfaces are possible in the
system with the CR 50.
Combination is not possible with the following products:
•
FR..., FW..., TR..., TF..., TA...
3
Installation
DANGER:
Life-threatening danger from electrical shock!
▶ Before installing this product:
Disconnect the heat source and all other BUS nodes from
the mains voltage across all poles.
3.1
Installation location
This user interface is intended only for wall-mounted
installation.
Do not install in the heat source or in wet areas.
Installation | 3
°C
°C
56
3723
80
1704
62
3032
86
1421
68
2488
–
–
74
2053
–
–
6720856749 (2016/03)
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