Connection And Wiring Diagram - Viessmann EA1 Installation And Service Instructions Manual

Connection and wiring diagram

DE1 Digital input 1
DE2 Digital input 2
DE3 Digital input 3
0 - 10 V 0 - 10 V input
Power supply
fÖ
Power supply for additional
fÖ A
accessories
KM-BUS to the control unit
aVG
Fault message facility/feed
aBJ
pump/swimming pool heating
circulation pump/DHW circula-
tion pump (potential-free)
21