Electrical Diagram - Bosch 940 ES Installation And Operating Instructions Manual

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Electrical diagram

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20
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Fig. 63 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
940 ES – 6 720 644 930 (2019/09)
15
M
21
22
13 12
M M
PS
E
16 16 ... ... 1 1 20 20
14
[15] Secondary fan
[16] AC plug
[17] Main connection
[18] Ignition electrodes
[19] Ground post
[20] Antifreeze kit connection
[21] Fuse
[22] Fuse
11
T=104°C
9
T=220°F
T=110°C
T=230°F
8
7
FS
... ... 1 1
JP2
JP8
JP7
JP6
JP5
6720608158-92.1AL
Electrical diagram
10
6
Casc.
5
input
Casc.
4
output
3
Back flow
2
1
63