Viessmann EA1 - General Information; Understanding Installation Instructions

5
1.
2.
Overview of electrical connections
aVG
A
L
N
L
N
fÖ
S
P
aBJ
Ö
[{S
DE
[{{]
0-10V
f-]
A
[{A
DE
[{D
DE
+ -5 61 2 1 2 3 4
A
EA1 extension
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 facility/
feed pump/DHW circulation
pump (floating switching con-
tact)
aVG
KM-BUS to the control unit
Wall mounting
5443233