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External Connection Diagram - Viessmann FB2A Installation And Service Instructions For Contractors

Compact energy tower with a gas condensing boiler, 4.8 to 26 kw natural gas and lpg version, g.c. no: 47-819-18/47-819-19 19 kw/26kw
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Designs

External connection diagram

A1
Main PCB
A2
Power supply unit
A3
Optolink
122
A4
Burner control unit
A5
Programming unit
A6
Coding card
A
B

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