Viessmann 6.0F-3 Quick Installation Manual page 13

AC Cable (ON-GRID&BACK-UP)
Type One
1
Φ: 18~22mm
BACK-UP: 75mm
ON-GRID: 55mm
Copper, 6-8kW: S=4mm
10-15kW: S=6mm
2
3
L L
L1
L2
L3
N
PE
2
3
1
1
2
4
3
12