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External Connection Diagram - Viessmann FB2B Installation And Service Instructions Manual

4.8 to 26 kw gas condensing/solar storage combi boiler natural gas and lpg version gas council no.: 47-819-18 19 kw 47-819-19 26 kw
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Designs

External connection diagram

A1
Main PCB
A2
Power supply unit
A3
Optolink
146
A4
Burner control unit
A5
Programming unit
A6
Coding card

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Vitodens 242-f

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