Wiring Diagram - Buderus 500-24S Installation And Maintenance Instructions Manual

5.2

Wiring diagram

Warning:
Do not connect 230 V to the connection block on the back of the DBA.
JP1 JP2 JP4
Hot surface ignitor
Ionisation electrode
Flue gas
thermostat
1
4
5
1
2
3
Flow sensor
Safety sensor
Buderus 500-24S - Subject to modifications resulting from technical improvements
JP1
JP3
High voltage
1
6
N
2
2
N
3 L
L 1
PE 3
N
4
1
N
3 5 L
L
2
PE JP1
5
1
2
4
5 6
14
15
1
11
Burner
thermostat
3
2
9
8
10
4
JP4
7
7
17
15 6
1
16
2
13
12
11 14
10
JP3
JP2
DBA
JP2
4
L
N
3
1
DBA
Switch contact
7
0 VAC
6
24 VAC
5
4
3
2
1
2
1
3
2
1
JP4 JP3
Low voltage
MAINS SWITCH
MAINS
230 VAC 50 Hz
3-WAY VALVE
(external Buderus three way valve)
24 VAC
HW TANK SENSOR
(Buderus product)
ROOM THERMOSTAT OR
MODULINK 250 RF
5
Appendix
7215 3000-18.1TD
49