1. ELECTRICAL WIRINGS
• Before carrying out any work, switch off the power
supply to the air conditioner.
• All the parts and materials supplied on site must
comply with the local laws and regulations.
• All the connection lines must comply with the
electrical wiring diagram. Incorrect connection
could cause the air conditioner to malfunction or
suffer damage. The wiring diagrams are subject to
continuous updates, so it is essential to use those on
the machine as your reference.
• The unit and its accessories must only be installed
and wired by professionals with the necessary
technical qualifications in installation, conversion,
extension and maintenance of the systems and who
are trained to perform operational and safety checks
on these systems. In this manual, these will generally
be referred to as “Personnel with specific technical
skills”.
• In the specific case of electrical wirings, the following
must be checked:
1. Measurement of the electrical system insulation
strength.
2. Continuity of the protection wires.
• To protect the unit against short circuits, mounted
on the supply line of an thermomagnetic isolator
switch (IG) with a minimum contact separation of at
least 3mm in all poles. Respect the measurements
given in the table.
• Check the earth cable is connected to the earthing
system of the building itself.
• Ensure that the installation is wired in compliance
with the laws and standards in force, and with the
instructions in this manual.
• If the power supply cables, earth cables,
communication cables or wired panel cables are
damaged, they must be replaced with cables with
the same specifications. Have repairs carried out by
“Personnel with specific technical skills”.
• Ensure that the air conditioner is connected to
the power supply or to a power socket with the
correct voltage and frequency as indicated on the
data plate. Using power supplies with the incorrect
voltage and frequency could damage the unit and
consequently risk starting a fire. The voltage must be
stable, without major fluctuations.
• The available electric power should be sufficient to
supply the air conditioner.
• The power supply cable should be safe and secure,
in order to avoid damage caused by pulling out the
cable terminal.
• Do not make junctions on the power supply cable:
use a longer cable. Replacement cables must
have the same specifications. Junctions can cause
overheating and/or fires. Have repairs carried out by
“Personnel with specific technical skills”.
• All the power supply lines must use terminals with
wire-end ferrules or single-wire terminals. Stranded
cables without wire-end ferrules could cause
electrical bridges.
• Do not leave any cables in contact with the cooling
pipe, the compressor or moving parts such as the
fans.
• Do not modify the circuits inside the air conditioner.
The manufacturer cannot be held responsible for
any damage or malfunction due to incorrect line
connections.
• Before accessing the terminals all of the power
supply circuits need to be connected.
• The air conditioner is a Class I electrical appliance,
so it is essential to provide a reliable earthing
connection.
• The yellow and green wire in the air conditioner and
the earth wire cannot be used for other purposes.
The cable cannot be secured with a screw through
the wire as this could result in an electric shock.
• The user must provide a safe earthing connection.
Check the earth cable is connected to the earthing
system of the building itself.
• Check a suitable differential switch is installed for
earthing electrical discharge. Do not connect the
earth cable to the following components:
1. Water pipes
2. Gas pipes
3. Drain pipes
4. Lightning conductor
5. Telephone earth cable
6. Other locations considered unsafe by “Personnel
with specific technical skills”.
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17. ELECTRICAL WIRINGS
