emmeti XECO Series, Installation Manual

Page: 17 / 40

17
1. DESCRIZIONE DEI COMPONENTI
GB GB
6. EXTERNAL UNIT INSTALLATION
6.3.4 Connecting the pipes to the fittings
- Connect the pipes to the fittings on the unit.
-Secure by tightening the nuts to a torque of:
Fitting inch 1/4” 3/8” 1/2” 5/8”
Coppia di serraggio N.m 18 42 55 75
Connect earthing wire.
Earthing wire should not be con- nected to the gas pipe,
water pipe, lightning rod or phone line, incorrect earthing
may cause shock.
6.4.1 Preliminary checks
Check that the electric system providing the supply to the air conditioner has
voltage and frequency corresponding to the needs of the unit.
Check that the electrical power available to the user is sufficient for the air
conditioner and the other electrical appliances to work.
6.4.2 Power units
HI models for Single-Wall power is turned on the indoor unit (Fig. A).
Fig. B
Differential
switch magnetothermic
Power supply
For models Dual Wall and Trial Hi Hi Wall, the power is turned on the
outdoor unit (Fig B).
Alimentation
Fig. A
Please use an exclusive source of electrical power for the air conditioner
only, with a dedicated magnetothermic switch /differential
Nota:
Single Hi-Wall models are already equipped with electric power cable, a
length of 1.8 m.
6.4.3 Connection and alimentation cables
- All the feed and connection cables must be approved in conformance
with IEC standards, and for lengths up to 15m., must have a section
not less than:
Model Cable
of alimentation
Cable
connection
Single Hi Wall 3x2.5 mm 2 4x2.5 mm 2
Dual Hi Wall 3x2.5 mm
2
4x1.5 mm2
Trial Hi Wall 3x2.5 mm
2
4x1.5 mm
2
- Use a multi-pole cable of type N07RN-F
- For lengths over 15m., use the next higher standard section, always
checking that in every case the voltage drop during operation is lower
than 3% of the supply voltage.
- If a cable is damaged it must be replaced by service personnel or by
qualified personnel.
- All cables must have the certificate of conformity.
6.4 Electrical supply
Electrical connections have to be done by qualified personnel, by observing
the current rules in the place where the air conditioner unit has to be
installed.
Electrical connection has to be preceded by a careful control about com-
patibility between the electrical supply line and the features of the unit
you want to connect.
In the electrical supply line of the unit it is mandatory to foresee a bipolar
switch (a differential one) with a contact separation of at least 3mm in
every pole.
Attention!
Before doing any work on the units, make sure that the main electrical
supply has been disconnected.
Before interrupting the power supply by means of the switch, turn the air
conditioner off with the remote control.
Refrigerant oil
Flare-nut
Open-ended
spanner
Torque wrench
Differential
switch magnetothermic