Electrical Connections; External Unit Connection; Connection To The Electricity Mains - Ariston ELYOS Series Installation Manual

GB
3.

ELECTRICAL CONNECTIONS

WARNING:
- Before carrying out any electrical connection make sure that the units have been disconnected from the elec-
tricity supply and that the systems which the appliance must be connected to comply with applicable regula-
tions.
- Only use cables with a suitable section.
- Allow some extra length on the connection cables to allow for future maintenance.
- Never connect the power supply cable by cutting it in half as this could cause a blaze.
- If the power supply cable is damaged, it must be replaced by the manufacturer or by its technical assistance
service, or at least by a suitably qualifi ed individual, in order to prevent all hazards
3.1 Internal unit connection
1. Remove the terminal board cover.
2. Feed the internal unit/external unit connection cable from the rear of the in-
ternal unit and prepare the tip of the cable.
3. Connect the conductors to the screw terminals in accordance with the num-
bering.
4. Use the wire clamp situated underneath the terminal board of the electrical
connections.
5. Put the cover back in place, ensuring it is positioned correctly.
NOTE the connection cables must not pass near electrical boxes, wifi routers
or other cables.

3.2 External unit connection

1. Remove the cover.
2. Connect the conductors to the screw terminals using the same numbering
used in the internal unit. Screw the terminal board screws tightly to avoid any
loosening.
3. Fasten the cables using the cable clamp.
4. Put the cover back in place, ensuring it is positioned correctly.
NOTE: remove the sheath from both ends of the connection wires in the power
supply cable as illustrated in the fi gure. Make sure the connection wires do
not come into contact with the piping or other metal parts.
Type of electrical connection
Model Power supply
2,5 kW 220-240V˜50Hz
3,5 kW 220-240V˜50Hz
NOTE: Electrical connection between the internal and external units must be
performed using a HO7RN-F cable

3.3 Connection to the electricity mains

The internal unit is provided with power supply cable fi tted with a plug.
To disconnect the appliance from the mains, use an omnipolar switch comply-
ing with all applicable CEI-EN regulations in force (minimum distance between
contacts 3mm, switch preferably equipped with fuses).
The connection of the appliance must comply with European and national regula-
tions and must be protected by a 30 mA differential switch.
Proper connection to an effi cient earthing system is essential for ensuring the
safe operation of the device.
26
15 mm
70 mm
Switch type Connection wire
10 A 4G 1 mm
10 A 4G 1 mm
2
2
1N 2L 3S
1N 2L 3S