Ariston NIMBUS COMPACT M NET 40 M EXT Technical Instructions For Installation And Maintenance page 60

ELECTRICAL WIRING
ATTENTION
The electrical connections shall be made after completing all hydraulic connections.
The internal and external units must be powered separately according to what is indicated on the tables. Between the internal
and external units should also be made a MOD BUS connection. This connection may be made through the use of a cable of
reduced section (recommended section 0,75 mm
Electrical circuit
• Check that the voltage and frequency of power supply from the network coincide with the data shown in the data plate of the
appliance (see table)
• In order to ensure greater security, the main electrical system should be checked by a qualifi ed technician before proceeding
with the installation (see note).
• The manufacturer is not liable for any damage caused by installation with improper grounding or abnormalities in the electrical
system.
• Check that the installation is adequate to support the power consumption of the installed units, indicated on the data plate of
the product.
• The electrical connections must be carried out with the aid of a fi xed supply connection (do not use mobile sockets) and equip-
ped with a bipolar switch, having a distance between the contacts of at least 3 mm.
• It is essential to connect the appliance to a correctly grounded electrical circuit, as to ensure the safety of the installation.
It is also forbidden to use for the grounding of the system and the hydraulic connection of the heating tubes.
• The manufacturer is not liable for any damage caused by installation with improper grounding or implant level anomalies elec-
tric.
• Connect the power cord to a 230V-50Hz or (400V-50Hz), verifying the polarizations of the L-N (or L1, L2, L3, N) connection and
the connection to the earth. The section of the used cables must comply with the power of the installation (see plate characte-
ristic).
• For the electrical connection of the installation, you shall not use power strips, extension cords and adapters. It is also prohibited
to use the hydraulic pipes and heating system pipes to ground the installation.
The system is not protected against lightning. If you need to change the fuses, use fast fuses.
Warning: Before obtaining access to terminals, all supply circuits must be disconnected.
TABLE OF ELECTRICAL CONNECTIONS
EXTERNAL UNIT
Nominal running current / phase
Maximum running current / phase
Circuit breaker size (*)
Nominal Voltage
Operating voltage limits
Cos phi
Power supply cable
Communication cable
INTERNAL UNIT
Electrical supply
Admitted voltages fi eld
Rated power input
Max current
Thermal cutout/ diff erential circuit breaker
Supply cable dimensions *
*if cable length < 20m
Wiring signal EDF, AFR, PV
N.B. It is strongly recommended to separate the supply cables from the communication cables.
60 / GB
2
). Do not let this cable walk along a power connection.
A
A
A
V
V
Reference
Max φext
Reference
Type
V - ph - Hz 230 - 1 -50
V 196 ÷ 253
kW
A
A
3G2.5
2
mm H05RN-F 2 x 0,75 mm2 or H07RN-F 2 x 1.0 mm2
40 M EXT 50 M EXT
6.4 8
9 11
16-C type 16-C type
230 230
216-243 216-243
H07RN-F
3G2.5 3G2.5
16.2 16.2
H05RN-F
2x0.75mm
FSP – 1 Zone
400 - 3 -50
340 ÷ 440
4
18
20A - type C
5G2.5
70 M EXT 70 M-T EXT
11
16
20-C type 10-C type
230 400
216-243 376-424
> 0,9
3G2.5 5G2.5
16.2 19.9
2
FSP – 2 Zones
230 - 1 -50 400 - 3 -50
196 ÷ 253 340 ÷ 440
3G2.5 5G2.5
3.8
5.4