Ea1 Extension - Viessmann Vitodens 222-F Installation And Service Instructions For Contractors

External extensions (accessories)
Function assignment
Function
DHW circulation pump sK
Heating circuit pump
sÖ
Circulation pump for cylinder heating

EA1 extension

Fig. 83
F1 MCB/fuse
DE1 Digital input 1
DE2 Digital input 2
DE3 Digital input 3
0 10V 0 10 V input
– –
(cont.)
Output A1
33:0
33:1 (delivered condition)
33:2
sA
fÖ
A
fÖ
Function description
Code ("General" group)
Output A2
34:0 (delivered condition)
34:1
34:2
Power supply
Power supply for additional accessories
125