Internal Extensions Ea1 - Viessmann Vitocrossal 300 Series Service Instructions Manual

Function Description

Internal Extensions EA1

Legend
DE1 Digital input 1
DE2 Digital input 2
DE3 Digital input 3
0 – 10V 0 - 10V input
Power supply
fÖ
fÖ A Power supply for additional
A
accessories
Central fault message/
aBJ
feed pump/DHW recirculation
pump (potential-free)
KM BUS
aVG
98
Vitocrossal 300 CU3A 26 to 199 Service
Refer to main wiring diagram on page 101.