Function description
External extension (accessories)
AM1 extension
Fig. 54
A1
Circulation pump
A2
Circulation pump
Power supply
fÖ
Functions
One of the following circulation pumps can be connec-
ted to each of the connections A1 and A2:
Heating circuit pump for heating circuit without mixer
■
Circulation pump for cylinder heating
■
■
DHW circulation pump (only for weather-compensa-
ted control units)
Connect DHW circulation pumps with standalone
functions directly to the 230 V
Function assignment
Function
DHW circulation pump
sK
Heating circuit pump
sÖ
Circulation pump for cylinder heating
106
∼
supply.
Output A1
33:0
33:1 (delivered condition)
33:2
sA
A Power supply for additional accessories
fÖ
KM-BUS
aVG
Select the output functions via the codes on the boiler
control unit.
Code ("General" group)
Output A2
34:0 (delivered condition)
34:1
34:2