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Attention
Carry out the electrical connections after having completed all the hydraulic connections.
Attention
After the Power OFF of the external unit, is needed to wait at least 5 minutes before turn it ON again.
Attention
If Alteas or Genus range boilers are used, the BUS decoupling board (supplied with the product) must be installed, by rigorously ob-
serving the instructions contained in the kit. Failing to install the board, or its faulty installation, will cause the boiler to stop working
and display error 804. If this error appears, it is necessary to shut o the powern supply to the boiler and check whether the board has
been installed correctly, in order to reset the error and start the system.
ELECTRICAL CONNECTIONS
The hybrid module, the boiler and the external unit must be powered separately in conformity to the applicable national and
local regulations. Connect the BUS cable of the hybrid module to the boiler’s BUS connection using the orange connector
supplied. The hybrid module and the external unit must be connected through a BUS connection, to be made using a shielded
cable with reduced cross-sectional area (0.25 mm2 recommended cross-sectional area). Make sure that the cable is not posi-
tioned in the vicinity of a power connection.
Electric circuit
• Check that the mains power supply voltage and frequency are in line with the data indicated on the system data plate (“Tech-
nical Data” table).
• For greater safety, ask a qualified technician to perform a thorough check of the electrical system.
• It is recommended to verify the presence of surge protection devices (SPD), in compliance with the national regulations in
force (IEC 60364 and its national harmonizations), in the power supply line and the presence of residual-current devices
and magneto-thermal switches on the electrical board which powers the external and internal unit separately. However, it is
recommended to install an SPD even if the risk level resulting from CRL calculation is low.
• The electrical system must meet all the legal requirements in force.
• The power supply connection is type Y and replacing the connection cable should only be performed by an authorised
service centre, in order to avoid any damages.
• Check that the installation is adequate to support the power consumption of the installed units, as indicated on the product
data plate.
• The electrical connections must made with the help of a fixed support (do not use portable socket-outlets) and fitted with a
bipolar switch, with a distance between contacts of at least 3 mm.
• It is essential that you connect the system to an electrical system with grounding which will ensure the safety of the installa-
tion.
It is also prohibited to use the hydraulic and heating system connection pipes for grounding of the system.
• The manufacturer is not liable for any damage caused by a system with improper grounding or electrical system anomalies.
• Connect the power supply cable to a 230V - 50Hz network, checking for LN polarity compliance and grounding (see the
table of electrical connections).
The cross-section of power supplier's cables, indicated on the table, must be considered as minimal.
The cross-section of the cables used must be in accordance with the system power (see data plate).
The system is not protected against lightning. In the event that you need to change the fuses, using fast-acting fuses.
Warning: Prior to accessing the terminals, all the supply circuits must be disconnected.
TABLE OF ELECTRICAL CONNECTION
EXTERNAL UNIT 40 M EXT 50 M EXT 70 M EXT 70 M-T EXT 90 M-T EXT 110 M-T EXT 90 M EXT 110 M EXT
Nominal running current / phase A 6.4 8 11 3.8 6 7.3 18 22
Maximum running current / phase A 9 11 16 5.4 8.4 10 23 27
Cutout - Circuit Breaker size A
12-C type
13-C type
16-C type 20-C type 10-C type
12-C type
13-C type
13-C type 32-C type 32-C type
Dierential Circuit Breaker size (RCCB) mA 30 - F or B type 30 - B type 30 - F or B type
Starting current A < 3
Nominal Voltage V 230 230 230 400 400 400 230 230
Operating voltage limits V 216-243 216-243 216-243 376-424 376-424 376-424 216-243 216-243
Cos phi > 0,9
Power Sypply Cable
Reference H07RN-F
Min cable
section
3G2.5 3G4 3G4 5G2.5 5G2.5 5G2.5 3G6 3G6
Max diameter
[mm]
14 16.2 16.2 17 17 17 18 18
Recommended
cables section
3G4 3G4 3G4 5G4 5G4 5G4 3G6 3G6
Max diameter
[mm]
16,2 16,2 16,2 19,9 19,9 19,9 18 18
Comunication Cable
Reference H05RN-F
Cable section 2x0.75mm
2
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