Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 17

Preparing for installation
Electrical installation scheme
2 Vitotwin
X100
N N
PE
L
L
3
N
PE
QX1 2
S
L
X200
L 2 4
3
PE
QX2
N
2
L 1 Z
L 2 4
PE 3
QX4
N
2
L 1 F
L 2 4
3
PE
QX3
N 2
L 1
M
4
EX2
3
2
EX1
J
X301
k
ATS
2
x
B4
2
3
B41
4
X300
h
B3
2
3
H5
2
B10
B42 n
2
3
b
2
b
BSB
2
X207
3
2
1
WIRELESS
3
2
1
(cont.)
230 V/50 Hz
70
VC 100
S
71
M
UV 9
1~
6
Junction box
6 18
2 B
X1
Low voltage
6
Preparing for installation
Junction box
2 B
Low voltage
2
B3
1
2
B4
1
2
B41
1
2
B10
1
B42
2
ATS
1
6
WIRELESS
2
BSB
1
18
X1
STS B3
5
PTSO B4 6
PTSU B41
7
PTSU B10/42
8
ATS
4
3 B
DM
FBE 3 A
41 51 61
6
X301
6
2
X300 Control unit
6
X207
17