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• Before carrying out any work, switch off the power
supply to the unit.
• Incorrect connection could cause the air conditioner
to malfunction or suffer damage. The wiring
diagrams are subject to a continuous update.
Therefore, it is mandatory to refer to those on the
machine.
• In particular, the electrical wirings require checks
relating to:
1. Measurement of the electrical system insulation
strength.
2. Continuity of the protection wires.
• If the power supply cables are damaged, it is
obligatory to replace them with new ones with the
same characteristics. Have repairs carried out by
“Personnel with specific technical skills”.
• Make sure the unit is connected to a power socket
with the correct voltage and frequency (as indicated
on the label on the machine). 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 joints on the power cable; replace
it with a new one with the same characteristics.
Junctions can cause overheating and/or fires.
• Do not modify the circuits inside the unit. The
manufacturer cannot be held responsible for
any damage or malfunction due to incorrect line
connections.
• The user must provide a safe earthling/grounding
connection.
• Check a suitable differential switch is installed
for earthling/grounding 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”.
NOTES:
• The thermomagnetic switch and the cross-section
of the cables are dimensioned in relation to the
maximum input current; this value indicates the
maximum input current while the unit is working, in
accordance with the indications in EN 60335-1 and
EN 60335-2-40 standards;
• Reference conditions for calculating the power
cable's cross-section (in conformity with IEC 60364-
5-52 standard):
• Multi-pole cable mounted in an insulated duct;
• Room temperature 40°C;
• Cable operating temperature 90°C;
• The thermomagnetic switch must have a magnetic
and thermal protection to protect the system against
short circuits and overloads;
ELECTRICAL CONNECTIONS
