Radio Clock Receiver; Connection - Viessmann VITOTRONIC 200 Installation And Service Instructions Manual

Components
Sensors
(cont.)
Viessmann NTC 20 k (orange marking)
Ω
40
20
10
1
0.1
0 20 40
Temperature in °C
Fig.55
1. Pull out plug
aG .
2. Check the sensor resistance and compare it with
the curve.

Radio clock receiver

Part no. 7450 563
Via the radio clock receiver, the time is automatically
set at the control unit and any remote control that may
be connected.

Connection

2-core lead, length max. 35 m with a cross-section of
2
1.5 mm .
86
60 80 100 120 140 160 180
3. In the case of severe deviation, check the installa-
tion and replace the sensor if required.
A B
E
1 2 3
1
Fig.56
Outside temperature sensor
A
Radio clock receiver
B
Green LED
C
Red LED
D
Aerial
E
200
1 2
C D