Viessmann Vitotronic 100 Installation And Service Instructions Manual page 24
Electronic boiler control unit
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Also See for Vitotronic 100:
- Installation and service instructions manual (168 pages) ,
- Operating instructions manual (64 pages) ,
- Operating instructions for the system user (57 pages)
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Electrical connections
Connecting an atmospheric burner
A
B4
S3
T2
T1
N
L
41
B
Fig. 21
A
To the control unit
To the fuel valve
B
2-stage burner extension
The function extension is supplied with the boiler.
A
BN BU
BK
K1
K1
C
K2
K2
BU BK BN
B
Fig. 22
To the control unit
A
To the burner control unit
B
C
Junction box with relay K1 and K2
24
(cont.)
Terminal designations
T1, T2 Control chain
S3
Burner fault
B4
Hours run meter
Colour coding to IEC 60757
BK Black
BN Brown
BU Blue
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