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Electrical connections
ON
1
91
91
A
Fig. 15
Power supply for accessories at plug
When positioned in wet rooms, accessories outside
the wet area must not be connected to the power sup-
ply at the HMU heat management unit. If the boiler is
not sited in a wet room, the power supply for accesso-
ries can be connected directly to the HMU heat man-
agement unit. This connection is switched directly with
the ON/OFF switch of the appliance.
(cont.)
/
(230 V ~)
lH
aBH
If the device is not integrated into a CAN bus sys-
■
tem:
Switch
must not be set to "ON".
A
■
If the device is integrated into a CAN bus system and
is located at the beginning or end of this system (not
in the middle) of the CAN bus system (connected to
only one plug
lA
): Set switch
C
A
ON
91 91
B
Fig. 16
Heat generator / HMU heat management unit
A
CAN bus cable
B
CAN bus other subscribers
C
■
If the device is integrated into a CAN bus system and
is not located at the beginning or end of the CAN
bus system (both plugs
switch
to "ON".
A
A
C
ON
91 91
B
Fig. 17
If the total system current exceeds 6 A, connect one or
more extensions directly to the mains supply via an
ON/OFF switch (see next chapter).
Installation sequence
A
to "ON".
C
B
connected): Do not set
lA
C
B
23
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