Radio Clock Receiver; Contact Temperature Controller - Viessmann VITOCROSSAL 200 Type CM2 Technical Manual

Control units
(cont.)
0
7 2
1 3

Contact temperature controller

Part no. 7151 729
May be used as a maximum temperature limiter for underfloor heating
systems (only in conjunction with metal pipes).
The temperature limiter is installed into the heating flow and switches
the heating circuit pump OFF if the flow temperature is too high.
0
7 2
1 3

Radio clock receiver

Part no. 7450 563
For receiving the DCF 77 time signal (location: Mainflingen near Frank-
furt/Main).
Radio controlled setting of time and date.
Install on an outside wall, facing the transmitter. The reception may be
reduced by metallic elements in the building structure, e.g. steel rein-
forced concrete, neighbouring buildings and sources of electro-mag-
netic interference, e.g. HV and public transport lines.
Connection:
■ 2-core lead, length up to 35 m with a cross-section of 1.5 mm
per)
■ Never route this lead immediately next to 230/400 V cables.
Plug-in adaptor for external safety equipment
Part no. 7164 404
KM BUS subscriber
With cables/leads (3.0 m long) and plugs aVG and aBÖ.
Up to 4 additional pieces of safety equipment may be connected, for
example:
■ Low water indicator
■ Minimum pressure limiter
■ Maximum pressure limiter
■ Additional high limit safety cut-out
Gas condensing boilers
Specification
Cable length
Setting range
Switching differential
Breaking capacity
Setting scale
Stainless steel sensor well
DIN reg. no.
Specification
Cable length
Setting range
Switching differential
Breaking capacity
Setting scale
DIN reg. no.
6 6
4 1
2
(cop-
The plug-in adaptor enables the fault (plain text) to be displayed in the
relevant control unit.
Two plug-in adaptors can be linked together via the KM BUS and con-
nected to the control unit. This makes it possible to connect 7 additional
safety features.
4.2 m, fully wired
30 to 80 °C
max. 11 K
6(1.5) A 250 V~
inside the casing
R ½ x 200 mm
DIN TR 1168
4.2 m, fully wired
30 to 80 °C
max. 14 K
6(1.5) A, 250 V~
inside the casing
DIN TR 1168
VIESMANN
77
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