Message And Safety Connections (Safety Chain) With Distribution Terminal - Viessmann KWT Vitocal 300-G Pro Installation And Service Instructions Manual

Overview of electrical connections

Message and safety connections (safety chain) with distribution terminal

L1
L2
L3
PE N N
PE N N
PE N N
PE N N
PE N N
PE N N
PE N N
16 16 16 16
N N N N
L1 L1
2X8
N 2X8 N
PE PE
2X3
L1 3X8 L1
N 3X8 N
PE 3X8 PE
PE PE
X1
220 K2 220
220.2
220 K2 220
220.3
1 STB 1
STB
2 2
10 X3 10
11 X3 11
12 X3 12
13 LP1 13
16 LP1.X3 16
N LP1.X2 N
3 LP1 3
4 X3 LP1 4
2 LP1 2
X3
14 LP1 14
X3
6 LP1 X3 6
7 LP1 X3 7
PE X1 PE
X3
5 St. 5
St.
6 X3 6
8 X3 LP1 8
9 LP1 9
X3
PE X3 X1 PE
223 St. 223
223.1
St.
223 223
223.2
116 K1 116
116.1
116 K1 116
116.2
116 K1 116
116.3
116 K1 116
116.4
116 K1 116
116.5
116 K1 116
116.6
16 LP1 16
N LP1 N
X3
X2
3 K1 3
4 K1 X3 4
116 K2 116
X3
116.1
116 K2 116
116.2
116 K2 116
116.3
116 K2 116
116.4
116 K2 116
116.5
116 K2 116
116.6
16 LP1 16
N N
LP1 X3
3 X2 K2 3
4 K2 4
X3
X3
Fig.34
■ Set the required parameters during commissioning; see from page 57.
■ Connections, see separate "Connection and wiring diagram" sheet 13, sheet 21.
Message and safety terminals
Terminals Function
PE/X1. Earth conductor
LP1.X2.N Neutral conductor
LP1.X3.16 Phase L1
(cont.)
L1
L2
L3
PE
PE
PE
PE
PE
PE
PE
16 16
N N
Explanation
Terminals for earth conductors of all associated system
components
Terminals for the neutral conductor of the heat pump
control unit.
Factory-fitted
Control unit power supply
Factory-fitted
Installation sequence
43