146
Extension EA1
A1 PCB
F1 Fuse/MCB
DE1 Digital input 1
DE2 Digital input 2
DE3 Digital input 3
0 – 10 V 0 – 10 V input
fÖ
Power supply
fÖ A
Power supply for additional
accessories
aBJ
Central fault message/feed
pump/DHW circulation pump
(potential-free)
aVG
KM BUS
Function description
External extensions (accessories)
(cont.)
5772 909 GB
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