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Electrical Diagram - Bosch 940 ESO Manual

940 eso - natural gas / 940 eso - liquefied petroleum (lp) gas
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14

Electrical diagram

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20
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Fig. 60 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
940 ESO
15
13
M
M
22
12
M
E
PS
T=104°C
T=220°F
16
16
...
...
1
1
20
20
...
...
14
JP2
JP8
JP7
JP6
JP5
6720608158-92.1AL
Electrical diagram | 39
11
10
9
T=110°C
T=230°F
8
7
FS
6
Casc.
5
input
Casc.
output
Back flow
1
1
6 720 644 956 (2016/05)
4
3
2
1

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