44
Installation and maintenance instructions ecoFIT sustain 0020277262_02
F
Wiring diagram, 30 kW
X14
L
N
X12
X51
X51
X20
16
1
9
3
15
4
5
6
13
X51
X20
X40
X51
X30
X2
X21
X41
X22
X14
L
N
– +
24V=
RT
BUS
Burner
off
RT
X1
FUS
X106
X32
X90
X12
X35
X1
RT
X21
L
N
L
N
1
5
eBUS
Burner off
X106
M
4
3
2
1
N
L
24V
230V~
24V
230V~
1
2
3
2
7
9
1
4
3
5
6
10
11
12
8
1
Main PCB
2
Interface PCB
3
Control system
4
Temperature sensor on the heating flow
5
Temperature sensor on the heating return
6
Fan
7
Gas valve assembly
8
Heating pump
9
Monitoring electrode
10
Room thermostat
11
Main power supply and connection for 230 V control
12
Ignition electrode