Viessmann Vitopend 100-W Installation And Service Instructions Manual page 29

Electrical connections
D
F
A Boiler
B Domestic distribution box
C Gas line
Cross-section of earth cables and earth
conductors: 2.5 mm 2
(cont.)
A
C
D
to 6 mm 2
B
PE
E
D Earthing clip
E Equipotential bonding bar
F Metal pipes
Installation sequence
29