EN-14
11
English
11 Electric connections
NOTE
The electrical installation and maintenance must be carried out by an
engineer IN POSSESSION OF THE NECESSARY QUALIFICATIONS
REQUIRED BY LAW. They must be suitably trained and informed of the
risks related to this work.
NOTE
The specification of the electrical cables and the related components
must be determined by an ENGINEER QUALIFIED TO DESIGN
ELECTRICAL SYSTEMS, in accordance with the international and local
regulations.
NOTE
During installation, refer to the electrical diagram supplied with the
appliance. The electrical diagram along with the manuals must be kept in
good condition and KEPT FOR FUTURE REFERENCE FOR ANY FUTURE
MAINTENACNE ON THE UNIT.
NOTE
It is mandatory 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.
The LAB heat pumps are completely wired at the factory and only
require connection to the electrical mains supply. It is essential to
verify that the electrical supply is capable of supplying the heat
pump when also taking into consideration any other machines
that may operate at the same time.
Lines and electrical data of the unit
NOTE
The cables for connecting to the mains are not provided.
The cross-sections of the cables shown in the table below are
recommended for a maximum length of 50 m. For greater
lengths, the Installation ENGINEER is responsible for the cable
sizing and the earth connection, according to:
The length
The type of cable
The absorption of the unit and the physical location, and the
ambient temperature.
NOTE
Check the tightening of all power wire clamps on commissioning and
after 30 days from start-up. Subsequently, check the tightening of all the
power clamps every six months. Loose terminals can cause overheating
of the cables and components.
12 Initial Start-up
12.1 Preliminary operations
ATTENTION!
Before carrying out the checks indicated below, make sure that the unit is
disconnected from the electricity supply.
Make sure that the air inlet grills are clean and free from ob-
stacles.
Make sure that the fans can operate freely without any ob-
struction. In particular, ensure that packaging, leaves, snow
or any other obstacle could prevent the fans from turning
have been removed.
12.2 Electrical checks, on the unit
without power
Check that the main power cables are suitably sized, for the
electrical load and local environmental conditions, and that
the unit has been appropriately earthed.
Check that all the electrical connections have been made
correctly and all the terminals adequately tightened.
12.3 Electrical controls on the live
unit
The following operations are to be carried out when the unit is not
live.
Use a Voltmeter, to check that the RMS supply voltage is
equal to 230V ±10%
Turn on the master switch. Check that the display comes on
after a few seconds and indicates that the heat pump is off.
LAB - (230 V Single-phase)
Model
Power
supply
voltage
Sect A
(mm^2)
Sect B
(mm^2)
Earth
(mm^2)
IL
(A)
LAB 07M
230 V
4
0.5
4
20
LAB 09M
230 V
6
0.5
6
25
LAB 11M
230 V
6
0.5
6
32
Key:
Sect A = Power supply
Sect B = Remote panel
IL = Line switch
Содержание LAB 07M
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