156
1L
3N
4N
2L
A1
Z1
L
N
L
N
S0
S0+
N
L
2 1
-
2 1
3
A
C
D
B
Fig. 116
A1 Mains distributor box
Z1 Electricity meter
A
Heat management unit gas condensing boiler
B
Power supply
C
BUS wiring chamber electricity meter
D
Fuel cell control unit
Connection and wiring diagram
Mains distributor box
5853335
Appendix