Viessmann Vitotwin 300-W - Page 53

53
Heating circuit with mixer
A
b
1 2 3 4
1 2 1 2 3 4X4 X1
17 2BSB
BSB
B4 B41
C
2
B
A
Extension kit for heating circuit with
mixer
B
Junction box
C
Heating circuit 2 and 3 with mixer
Note
Never interchange wires.
See separate installation instruc-
tions.
Installation sequence
Terminal connections
(cont.)
5618 294 GB
Installation