Viessmann VITOCAL 300-G PRO Installation And Service Instructions Manual page 64

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Installation sequence
Overview of electrical connections
Message and safety connections (safety chain) with distribution
terminal
L1
L2
L3
PE
N
PE
N
PE
N
PE
N
PE
N
PE
N
PE
N
16
16
16
N
N
N
PE
X1
220
K2
K2
220
STB
1
2
STB
X3
10
X3
11
X3
12
13
LP1
16
LP1.X3
N
LP1.X2
3
LP1
4
LP1
2
LP1
14
LP1
6
LP1
7
LP1
X1
PE
5
St.
St.
6
LP1
8
9
LP1
PE
X1
223
St.
223
St.
116
K1
116
K1
116
K1
K1
116
116
K1
K1
116
16
LP1
LP1
N
3
K1
K1
4
116
K2
116
K2
116
K2
116
K2
116
K2
116
K2
16
LP1
N
LP1
3
K2
4
K2
X3
64
L1
L2
L3
N
PE
N
PE
N
PE
N
PE
N
PE
N
PE
N
PE
16
16
16
N
N
N
PE
220
220
1
2
10
11
12
13
16
N
3
4
2
14
6
7
PE
5
6
8
9
PE
223
223
116
116
116
116
116
116
16
N
3
4
116
116
116
116
116
116
16
N
3
4
(cont.)
■ Set the required parameters during
commissioning; see from page 83.
■ Connections, see separate "Connec-
tion and wiring diagram" sheet 13,
sheet 21.

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