Operating instructions

22
Power supply for accessories at plug lH (230 V~)
Where the boiler is installed in a wet
area, the power supply connection for
accessories must not be made at the
control unit. If the boiler is installed out-
side wet areas, then the power supply
connection for accessories can be made
directly at the control unit. This connec-
tion is switched directly with the ON/OFF
switch of the control unit.
If the total system current exceeds 6 A,
connect one or more extensions via an
ON/OFF switch directly to the mains sup-
ply (see next chapter).
Connection of accessories
Power supply and KM BUS
Power supply to all accessories via heat source control unit
145 145 40 A 40 145 145 40 A 40
B C
145 40 96
A
145 145 40 A 40
D
E
Some accessories with direct power supply
145 145 40 A 40 145 145 40 A 40
B C
145 40 96
A
145 145 40 A 40
D
E
A
Heat source control unit
B
Extension kit for heating circuit with
mixer M2
C
Extension kit for heating circuit with
mixer M3
D
Extension AM1, EA1 and/or solar
control module, type SM1
E
ON/OFF switch
Installation sequence
Electrical connections
(cont.)
5772 909 GB