For higher lengths or differ-
ent types of cable installa-
tion, it will be the DESIGNERS
responsibility to carefully
measure the line main
switch, the supply power line
and the earthing protection
connection, and the work-
ing connection cables:
− the length
− the type of cable
− Absorption of the unit
and its physical position,
and room temperature.
WARNING:
Check that all power cables
are correctly secured to the
terminals when switched on
for the fi rst time and after
30 days of use. Afterwards,
check the connection of
the power cables every six
months.
Slack terminals could cause
the cables and components
to overheat.
22.2. CONNECTION TO
THE POWER SUPPLY
− Check there is no voltage
on the electric line you
want to use.
22.2.1. To access the elec-
tric box:
− Turn the electrical panel
screws ¼ in counter-
clockwise direction
− Turn the handle of the
door-block disconnecting
switch to OFF (see figure).
In this way, the electrical
panel can be accessed
22.3. ELECTRICAL POWER
CONNECTION
− For the functional
connection of the unit,
run the power supply
cable to the electrical
panel inside the unit
fi g. 1 and connect it
to the disconnecting
switch terminals ob-
serving the phase and
the earth. fi g. 2
22.4. AUXILIARY CON-
NECTIONS AT THE
USER/INSTALLER
EXPENSE
For installation requirements,
refer to the wiring diagram
supplied with the unit. The
wiring diagram together with
the manuals must be kept in
good conditions and readily
ACCESSIBLE FOR FUTURE OP-
ERATIONS ON THE UNIT.
Key fig. 2
L1 Line 1
L2 Line 2
L3 Line 3
PE Earth
Fig.2
Fig.1
50
INXWPY. 1004. 4438805_00
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