32
For the next operations refer to the manual of the
paired outdoor unit.
3�15 Electric connections
The appliance leaves the factory fully wired and only needs
to be connected to the external unit and any accessories.
3�15�1 Preliminary warnings
All operations of an electrical nature must be carried
requirements, trained and informed about the risks re-
lated to such operations.
All connections must be made following the regulations
in force in the country of installation.
Before carrying out any work, make sure that the power
The unit must only be powered after all plumbing and
electrical work has been completed.
Forallsafetywarnings,pleaserefertothemanual
of the combined outdoor unit.
Preliminary warnings for R32
metre of the air outlet.
All precautions concerning the treatment of the refrig-
erant must be observed following the regulations in
force.
Avoid proximity to sources of ignition in continuous
lighted cigarettes, etc.).
Smoking in the vicinity of the appliance is prohibited.
Using a mobile phone near the appliance is prohibited.
Perform the following checks:
• carry out safety checks to ensure that the risk of com-
bustion is minimised
•
• delimit the area around the workspace
• ensure safe working conditions around the area by
3�15�2 Connection of heating element kit
Preliminary warnings
Make sure that:
• the characteristics of the electric network are adapt-
ed to the absorption of the apparatus, considering
also any other devices in parallel operation
• the power supply voltage and system frequency
match to the values indicated on the device's plate
data
• the cables must be appropriate for the type of instal-
lation in accordance with the applicable IEC standards
• the cable terminals are provided with pin terminals
of a cross-section proportionate to the connecting
cables before inserting them into the terminal block
• the power supply is provide with protection against
overload and/or short-circuit
It is required:
•
• install a dedicated switch-disconnector equipped with
delayed fuses or an omnipolar magneto-thermal cir-
cuit breaker complying with CEI-EN standards, suited
with a maximum setting equal to that prescribed by
the individual electrical standards
Ensure that an earth connection is established. Do not
connect the appliance to earth using distribution pip-
ing, surge arresters or to the telephone plant earth. Im-
proper earthing can result in electric shock. Momentary
high-voltage surges caused by lightning or other caus-
es could damage the heat pump.
It is recommended to install a residual-current device.
Failure to install this device may result in electric shock.
Electrical connections must be made following the in-
structions in this manual and with the standards or
practices governing the connection of electrical equip-
incomplete electrical connections may result in electric
The power supply line must be adequately sized to
avoid voltage drops or overheating of cables or other
devices placed on the line itself.
Use a dedicated power circuit. Never use a power sup-
ply to which another appliance is also connected be-
For the electrical connection, use a cable that is long
enough to cover the entire distance without any con-
nection. Do not use extension cables. Do not apply oth-
er loads on the power supply.
After connecting the interconnection and power cables,
make sure that the cables are routed so that they do
not apply excessive forces on the covers or electrical
panels. Incomplete connection of the covers may result
If you need to replace the power cable, contact only
-
tional laws.
The manufacturer is not liable for any damage caused
by the lack of earthing or failure to comply with the
It is forbidden the use of gas and water pipes for
grounding the appliance.
Power line dimensioning of heating
elements
In case of installation of the accessory Electric Heating Kit,
use the tables below for the dimensioning of the power
supply line and its protection device.
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