Electric Connections - AERMEC WRL Series Manual

6.

ELECTRIC CONNECTIONS

The WRL heat pumps are completely
wired at the factory and only require
connection to the electrical mains,
downstream 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:
− The electrical mains features
are suitable for the absorption
values indicated in the electrical
data table, TAB. also taking into
consideration any other machines
operating at the same time.
− The unit is only powered when
installation has been completed
(hydraulic and electric).
− Respect the connection indications
of the phase, and earth wires.
− The power supply line must have
a relevant protection mounted
upstream against short circuits and
dispersions to earth, which isolates
the system with respect to other
utilities.
− The voltage must be within a
tolerance of ±10% of the nominal
power supply voltage of the
machine (for unbalanced three-
phase unit max 3% between
the phases). Whenever these
parameters are not respected,
IWRLI2. 1810. 4900577_05
All the electrical operations must be carried out bySTAFF IN POSSESSION OF
THE NECESSARY QUALIFICATIONS BY LAW, suitably trained and informed on
the risks related to these operations.
The characteristics of the electrical lines and of the related components
must be determined by STAFF QUALIFIED TO DESIGN ELECTRICAL SYSTEMS,
in compliance with the international and national regulations of the place
of installation of the unit and in compliance with the regulations in force at
the moment of installation.
For the installation requirements refer only to the electrical diagram
supplied with the appliance. The electrical diagram along with the manuals
must be kept in good condition and ALWAYS AVAILABLE FOR ANY FUTURE
SERVICING ON THE UNIT.
IT ISmandatory to verify that the machine is watertight before making the
electrical connections and it must only be powered up after the hydraulic
and electrical works have been completed.
contact the electric energy public
body. For electric connections, use
the cables with double isolation
according to the Standards in
force on this subject in the different
countries.
− The use of an omnipolar magnet
circuit breaker switch is mandatory,
in compliance with the IEC-EN
Standards (contact opening at least
3 mm), with 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.
− It is mandatory to make an effective
earth connection. The manufacturer
cannot be considered responsible
for any damage caused by the lack
of or ineffective appliance earth
connection.
− For units with three-phase
power supply, check the correct
connection of the phases.
WARNING:
It is prohibited to use the water pipes
to earth the appliance.
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