Appendix
36
Installation and maintenance instructions ecoFIT pure 0020230533_01
E
Connection diagram: Pure boiler (30 kW)
X2
X14
L
N
19
10
20
16
2
4
11
13
14
18
7
17
8
X51
X51
X20
16
1
9
3
15
4
5
10
11
6
13
X51
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
X21
L
N
RT 230Vac
N
L
X1
1
3
4
1
3
1
2
3
eBUS
Burner off
X106
M
5
4
2
1
2
1
2
1
N
L
L
24V
230V~
24V
230V~
X12
L
N
2
7
8
10
9
1
4
3
5
6
12
11
1
Main PCB
2
Interface PCB
3
Control system
4
Temperature sensor in the heating flow
5
Temperature sensor in the heating return
6
Fan
7
Gas valve
8
Pressure sensor
9
Ionisation electrode
10
Heating pump
11
Ignition electrode
12
Main power supply