Power Supply; Protection Devices; User Board - MAXA i-290 0106 Installer Manual

1. Unscrew screw M4 (number 3) using a cross screwdriver.
2. Release the box by first pulling it upwards and then outwards.
The above-mentioned operations must be carried out with the machine off and power disconnected (by means of the spe-
cific disconnector applied by the installer).
Operations to be carried out by qualified personnel (IEC 60335-2-40 Annex HH).
When the work is finished, close all of the removed covers applying the screws and seals (if included).
5.12.2 Power supply
Electrical connections must only be carried out by QUALIFIED PERSONNEL, in accordance with current regulations.
Make sure to install an adequate ground connection, incomplete grounding can cause electric shock. The manufacturer
cannot be held responsible for any damage caused by failure or ineffective earthing.
The power cables, electrical protections and line fuses must be sized in accordance with what is reported in the unit's wiring diagram and in the
electrical data contained in the technical characteristics table.
Use a dedicated power line, do not power the appliance through a line to which other users are connected. Fasten the power cables securely and
make sure they do not come into contact with sharp corners. Use double insulated cables with copper wires: for the power supply of the units,
it is recommended to use a cable with characteristics type H07VV-F or higher.
The ground connection must be carried out first during the connection phase, vice versa it must be removed last when the unit is disconnected.
In the event of any loosening of the power cable, it must be ensured that the tension of the active conductors takes place before that of the
ground wire.
Prepare the laying of the building's electrical cables through the wall feedthrough in the direction of the product. Depending on the type of
laying, the physical location and the length of the cables (whether less or more than 10 m), it will be the responsibility of the electrical system
designer to make an appropriate choice for the dimensioning of the system.
5.12.3 Protection devices
It is mandatory to install electrical separation devices upstream of the unit, sized according to the nameplate data on the unit:
• For electrical protection, delayed fuses with characteristic C must be used. In the case of connection to the three-phase mains, the fuses
must be able to be switched 3-pole. They must have a contact opening of at least 3 mm.
• Install an all-current sensitive differential magnetothermal switch type B (intervention threshold 30 mA, breaking capacity 4.5 kA).
Power supply Model i-290
230V / 1ph 0106
230 V / 1ph 0109
230V / 1ph 0112
400V / 3ph 0115 / 0118
The units comply with electromagnetic compatibility specifications, however, the electrical system designer must make the appropriate assess-
ments to ensure the absence of interference.
5.12.4 User board
The connection board is located under the machine cover. For access see Chapter 5.7.1.
The board must be connected respecting the notes below. The connections shown below are standard. Other connections are given in the MCO
manual of the board-machine control (see "USER AND INSTALLER CONFIGURATION TABLES"), according to the configurations adopted.
CAUTION: It is important to keep the high voltage cables separated from the very low voltage ones.
TERMINAL
PE
N
L
L2
L3
36
DELAYED FUSES WITH CHARACTERISTIC
C (Alternatively DIFFERENTIAL SWITCH
TYPE B)
16 A
25 A
32 A
20 A
CONNECTION
Connect the earthing cable
Connect the neutral cable from mains
Connect phase L1 cable from mains
Connect phase L2 cable from mains
Connect phase L3 cable from mains
i-290
Inverter air/water heat pumps with axial fans
Recommended cables cross-section
(max. length 10 m)
(lunghezza max 10 m)
3 x 4 mm²
3 x 6 mm
2
3 x 6 mm
2
5 x 4 mm
2
Input for 1-Ph/N/PE power supply, 230 V, 50
(only for sizes 0106/0109/0112)
Input for 3-Ph/N/PE power supply, 400 Vac,
Tightening torque clamps
N-L-PE: 0,8 Nm
N-L-PE: 0,8 Nm
N-L-PE: 0,8 Nm
N-L-L2-L3-PE: 0.8 Nm
TYPE
Hz.
50 Hz.
(only for sizes 0115 / )