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Electrical diagram
9 Electrical diagram
Fig. 72 Electrical scheme
1 Inlet 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 Exhaust temperature sensor
12 Water valve
13 Primary fan
14 ON/OFF switch
15 Secondary fan
16 Power supply cord
17 Power connection
18 Ignition electrodes
19 Ground post
20 Antifreeze kit connection
21 Fuse
22 Fuse