Function description
External extensions (accessories)
AM1 extension
Fig. 71
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
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
144
∼
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 parameters at the boiler
control unit.
Parameter ("General" group)
Output A2
34:0 (delivered condition)
34:1
34:2