External Extensions (Accessories); Am1 Extension - Viessmann Vitodens 242-F Installation And Service Instructions Manual

External extensions (accessories)

AM1 extension

Fig. 85
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 the heating circuit without
mixer
Circulation pump for cylinder heating
■
■ DHW circulation pump
Connect DHW circulation pumps with standalone
functions directly to the 230 V
∼
supply
A Power supply for additional accessories
fÖ
KM BUS
aVG
Select the output functions by means of the codes on
the boiler control unit.
Function description
115