1
Fig. 26. Accessing the High Voltage Terminal
I-48
B-070343_EN • B
P
roduct
I
nstallatIon
Connections
Any damaged power supply cable
must be replaced using cables as
described below and installed by a
qualified professional.
The cross-section of the wires should be
>1.5 mm
2
, equipped with sleeves at L
and N ends.
High voltage wiring is connected to a terminal strip
located at the back of the boiler. See below.
The main board and electrical connec-
tions, as well as the low-voltage termi-
nal strip, are located at the front of the boiler
See
“Accessing the Low Voltage Terminal
Strip and Electronic board” on page I-49.
i
Safety Instructions for the Electrical
Connections
Conditions:
Tools and Material:
î
Wrench, hex head, size 4
Procedure:
1.
Remove two screws (
1
) from the panel. Re-
tain the panel and hardware for reinstallation.
OFF
Accessing the High Voltage Terminal Strip
Make sure that the power supply to
the appliance is deactivated (power
supply cable disconnected from the
boiler) before accessing the high
voltage terminal strip.
Route the electrical cables
through the holes at the back of
the appliance.
i
When the appliance is con-
nected to the electrical net-
work, it must be earthed.
Make sure that a fuse or circuit breaker
of the recommended rating is installed
outside the appliance, to allow electri-
cal isolation.
Do not touch the appliance with any
wet body parts when it is supplied with
electrical power.
Before performing any operation on
the electrical circuit, isolate the electri-
cal supply of the appliance through the
external power-cutting device (fuse,
circuit-breaker, etc.)
When routing the cables through
sharp-edged holes in the panels, make
sure to install glands or grommets, and
to secure the cables in order to prevent
any damage.
Make sure to make the con-
nections to the correct termi-
nals, as indicated on the wir-
ing diagram. If high voltage
cables are installed on a
low-voltage terminal, the elec-
tronic board will be damaged.
When connecting wires to the termi-
nals, check that the connection is se-
cure and that all the wire strands are
tightly held
Electrical connections must be carried
out by a qualifi ed professional in accord-
ance with current standards and regula-
tions in force.
