Viessmann Vitotwin 300-W - Page 22

22
Electrical installation scheme
230 V/50 Hz
230 V/50 Hz
11
40
96
N
L
Low voltage
STS
13
5
17
40
40 A
157
0-10V
72
73
1
145
2
71
S
3
4
DE3
40
11
96
20
21
UPSB
15
M
1~
28
145
1
KTS
14
3
EA1
191
9
15
41
7
73
DE2
DE1
1
17
41
150
X12
41
X12
2
41
7
50
1
2
3
1
2
1
2
1
2
1
2
3
4
1
145
2
18
K1
A1
A2
22
21
X5/1
2 A
X5/2
2 A
KO1B / KO2B
EA1
ATS
12
74
1
2
3
L
N
L
N
L
N
S
P
Ö
1
2
L
N
L
N
1
2
1
2
Preparing for installation
Preparing for installation
(cont.)
5618 294 GB