0020230531_06 ecoFIT pure Installation and maintenance instructions
47
E
Wiring diagram: Combi boiler
X2
X14
X21
L
N
19
10
20
2
6
3
11
13
14
18
7
17
8
X51
X51
X20
16
1
9
3
15
4
5
10
11
6
13
X51
X35
X20
X40
X51
X30
X2
X21
X41
X22
X14
L
N
– +
24V=
RT
BUS
Burner
off
RT
230Vac
X1
FUS
X106
X32
X90
X12
X35
X1
L
N
RT 230Vac
X35
4
1
3
2
eBUS
RT 24V
Burner off
X106
1
3
4
1
3
3
1
2
M
1
3
4
6
1
2
3
M
5
4
2
1
2
1
2
1
N
L
L
24V
230V~
24V
230V~
2
7
8
9
10
12
11
1
4
3
5
6
14
13
1
Main PCB
2
Interface PCB
3
Timer
4
Temperature sensor on the heating flow
5
Temperature sensor on the heating return
6
Fan
7
Gas valve assembly
8
3-port diverter valve
9
Pressure sensor
10
Flow rate sensor
11
External ignition transformer
12
Heating pump
13
Ionisation and ignition electrode
14
Main power supply and connection for 230 V control
