6 720 680 223
Electrical diagram
45
9
Electrical diagram
Fig. 59 Electrical scheme
1
Intlet water temperature sensor
2
Outlet water temperature sensor
3
Backflow temperature sensor
4
Cascading output connection
5
Cascading input connection
6
Ionization sensor
7
Water flow sensor
8
Flue gas limiter
9
Heat exchanger overheat sensor (ECO)
10
Gas valve
11
Jumper resistance
12
Water valve
13
Primary fan
14
ON/OFF switch
15
Secondary fan
16
AC plug
17
Main connection
18
Ignition electrodes
19
Ground post
20
Antifreeze kit connection
21
Fuse
22
Fuse
20
...
1
16
...
1
JP5
JP6
JP7
JP8
JP2
M
PS
M
M
E
FS
T=104°C
T=220°F
T=110°C
T=230°F
Casc.
input
Casc.
output
2
1
4
5
6
7
9
10
11
12
13
15
16
20
19
18
21
22
17
14
8
Back flow
3
6720608542-04.1AL