HED-HCAT SE FREE COOLING
ENGLISH
8
POWER CONNECTIONS
The direct expansion terminals leave the factory complete-
ly wired and ready for connection to the mains electricity
supply, accessories and the receiver. The receiver must be
connected using shielded cable to avoid radio interference
which could lead to malfunctioning. All electrical connec-
tions must be carried out by qualified personnel.
For all electrical work, refer to the electrical wiring dia-
grams in this manual.
You are also recommended to check that:
- that the characteristics of the mains electricity supply are
adequate for the absorptions indicated in the electrical
characteristics table below, also bearing in mind the pos-
sible use of other equipment at the same time.
Power to the unit must be turned on only after
installation work (mechanical, hydraulic and electri-
cal) has been completed.
All electrical connections must be carried out
by qualified personnel in accordance with legislation
in force in the country concerned.
Respect instructions for connecting phase, neu-
tral and earth conductors.
The power line should be fitted upstream with a
suitable device to protect against short-circuits and
leakage to earth, isolating the installation from other
equipment.This protection device should also act as
a main switch and, if not visible from the electrical
panel of the unit, should be lockable.
Voltage must be within a tolerance of ±10 of the
rated power supply voltage for the unit.
If this is not the case, contact the electricity supply
company.
For electrical connections, use double insulation
cable in conformity with current legislation in the
country concerned.
An efficient earth connection is obligatory.
Failure to earth the appliance absolves the manufac-
turer of all liability for damage.
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ELECTRICAL POWER CONNECTIONS
To connect the unit to make it operative, insert the power
cable of the electric control panel inside the unit and con-
nect to the terminals (U) phase, (N) neutral and (PE) earth,
inserting a suitable residual current circuit breaker with
on/off switch between the power outlet and the unit.
2
1
5
4
3
1
Flared gas pipe connection
2
Flared liquid pipe connection
3
Finned coil
4
Fan
5
Expansion device
REFRIGERANT CIRCUIT
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