16 21.05 - 6068956_00
NXP 0500 - 1650 2-PIPE SYSTEM / 4-PIPE SYSTEM
EN
The units are completely wired at the factory and only
from a unit switch, according to that envisioned by
the Standards in force on this subject in the country of
installation.
It Is also advised to check that:
1. The electrical mains features are suitable for the
input values indicated in the electrical data table,
also taking any other machines operating at the
same time into consideration.
2. The unit must only be powered when installation
3. Respect the connection indications of the phase
and earth wires.
4. The power supply line must have a relevant protec-
tion against short circuits mounted upstream and
dispersions to earth, which isolate the system with
respect to other utilities.
5. The voltage must be within a tolerance of ±10% of
the nominal power supply voltage of the machine
not respected, contact the electric energy public
body.
For electric connections, use the cables with dou-
ble isolation according to the Standards in force on
this subject in the different countries.
THE FOLLOWING ARE MANDATORY
1. The use of an omnipolar magnet circuit breaker
suitable cut-off power and differential protection
on the basis of the electric data table shown below,
installed as near as possible to the appliance.
2. It is mandatory to make an effective earth connec-
tion. The manufacturer is not liable for any damage
caused by the lack of or ineffective appliance earth
connection.
3. For units with three-phase power supply, check the
correct connection of the phases.
4. It is mandatory to verify that the machine is water-
electrical works have been completed.
STAFF
IN POSSESSION OF THE NECESSARY QUALIFICATIONS
BY LAW, suitably trained and informed on the risks related
The features of the electrical lines and of the related
components must be determined by STAFF QUALIFIED
TO DESIGN ELECTRICAL SYSTEMS, in compliance with
diagram supplied with the appliance.
THE WIRING DIAGRAM ALONG WITH THE MANUALS
MUST BE KEPT IN GOOD CONDITION AND ALWAYS
BE AVAILABLE FOR ANY FUTURE INTERVENTIONS ON
THE UNIT.
ATTENTION
1. It is prohibited to use the water pipes to earth the
appliance.
2. Check the tightening of all power wire clamps on
commissioning and after 30 days from start-up.
Successively check them every six months.
Loose terminals can cause overheating of the
cables and components.
ELECTRIC CONNECTIONS
1.
2. Open the front panel.
3. Use th e plates t o pass the m ain ele ctri c power su pply
cable and the cables of the other
the installer.
4.
sioned in this manual with electric cables.
5. Avoid direct contact with non-insulated copper
piping and with the compressor.
and always refer exclusively to the wiring dia-
gram supplied with the unit.
7.
the power supply cable to the electric control
board inside the unit and connect it to clamps.
L1-L2-L3 as phases, and PE as earth;
powering the unit electrically.
10.
1. ELECTRIC POWER CONNECTION TO THE ELECTRICAL MAINS
ON
OFF
Holes for passage of electric cables
Master Switch ON/OFF
Restoring the
protection degree of
the electrical box by
the installer
9. ELECTRIC CONNECTIONS
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