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Designs; Connection And Wiring Diagram Internal Connections I - Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual

Compact energy tower with a gas fired condensing boiler as compact model; natural gas and lpg version
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Connection and wiring diagram
A1
Main PCB
X ...
Electrical interface
§
Boiler water temperature sen-
sor
%
Cylinder temperature sensor
internal connections I
aA
Ionisation electrode
aG
Flue gas temperature sensor
dÖ
Stepper motor for diverter
valve
dG
Gas solenoid valve

Designs

129
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Troubleshooting

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