Electrical diagram
9Electrical diagram
16
15
20 | M |
19
18
17 |
21 |
22 |
Fig. 59 Electrical scheme
1Intlet 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
16AC plug
17Main connection
18Ignition electrodes
19Ground post
20Antifreeze kit connection
21Fuse
22Fuse
13 |
| 12 |
|
|
|
|
|
|
|
M | E | M PS |
|
|
|
|
|
|
|
|
|
|
| 11 |
|
|
|
|
|
|
|
|
|
| 10 |
|
|
| |
|
| T=104°C |
|
|
|
|
|
| |
|
| T=220°F | 9 |
|
|
|
|
| |
|
|
|
| T=110°C |
|
|
|
|
|
|
|
|
| T=230°F |
|
|
|
|
|
|
|
|
| 8 |
|
|
|
|
|
|
|
|
| FS | 7 |
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
| 6 | Casc. | 5 |
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
| input |
|
| |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
| Casc. | 4 |
| |
|
|
|
|
|
| output |
| ||
|
|
|
|
|
|
|
| ||
|
|
|
|
|
| Backflow | 3 | ||
|
|
|
|
|
|
|
|
| 2 |
|
|
|
|
|
|
|
|
| 1 |
|
| 16...1 20...1 |
|
|
|
|
| ||
| 14 | JP2 | JP8 |
|
|
|
|
|
|
| JP7 |
|
|
|
|
|
| ||
|
| JP6 |
|
|
|
|
|
| |
|
| JP5 |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
| ||
6 720 608 542 | 45 |
