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