Electrical Connections; Electrical Circuit; Table Of Electrical Connections - Ariston NIMBUS 40 M EXT Technical Instructions

ELECTRICAL CONNECTIONS

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 off 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.
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
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
Nominal running current / phase
Maximum running current / phase
Cutout - Circuit Breaker size
Differential Circuit Breaker size (RCCB)
Starting current
Nominal Voltage
Operating voltage limits
Cos phi
Power Sypply Cable
Comunication Cable
40 M EXT 50 M EXT
A 6.4
A 9
12-C type
A 16-C type
13-C type
mA 30 - F or B type
A
V 230 230
V 216-243 216-243
Reference
Min cable
3G2.5 3G4
section
Max diameter
14 16.2
[mm]
Recommended
3G4 3G4
cables section
Max diameter
16,2 16,2
[mm]
Reference
Cable section
70 M EXT 70 M-T EXT 90 M-T EXT 110 M-T EXT 90 M EXT 110 M EXT
8 11 3.8
11 16 5.4
20-C type 10-C type
< 3
230 400
216-243 376-424
> 0,9
H07RN-F
3G4 5G2.5
16.2 17
3G4 5G4
16,2 19,9
H05RN-F
2x0.75mm
6 7.3 18
8.4 10 23
12-C type
13-C type 32-C type 32-C type
13-C type
30 - B type 30 - F or B type
400 400 230
376-424 376-424 216-243
5G2.5 5G2.5 3G6
17 17 18
5G4 5G4 3G6
19,9 19,9 18
2
/ 75
(see the
22
27
230
216-243
3G6
18
3G6
18