Ariston E-Combi 30 - Electrical Connections; Peripheral Unit Connection

25
installation
WARNING
Before performing any work on the boiler,
rst disconnect it from the electrical power
supply using the external bipolar switch and
remove the fuse.
Electrical connections
For increased safety, ask a qualied technician to
perform a thorough check of the electrical system.
The manufacturer is not responsible for any damage
caused by the lack of a suitable earthing system or by
the malfunctioning of the electricity mains supply.
Make sure that the system is able to withstand the
maximum power used by the boiler (this is indicated
on the appliance data plate). Check that the section
of the wires is suitable and is not less 0.75 mm
2
The appliance must be connected to an ecient
earthing system if it is to operate correctly.
The power supply cable must be connected to a
230V-50Hz network, where the L-N poles and the
earth connection are all respected.
Important!
In the event that the power supply cable has to
be changed, replace it with one with the same
specication.
Power supply cable
Important!
The appliance is supplied with a y-lead
already connected, this must be connected
to a 240V supply fused at 3 amp it must
give complete electrical isolation of the
appliance, by use of a fused double pole
isolator having a contact separation of at
least 3mm in all poles or alternatively by
means of a 3A fused three pin plug and
unswitched shuttered socket outlet both
complying with BS1363.
The use of multiplugs, extension leads or adaptors is
strictly prohibited.
It is strictly forbidden to use the piping from the
hydraulic, heating and gas systems for the appliance
earthing connection.
The boiler is not protected against the eects caused by
lightning. If the boiler fuses need to be replaced, use 2A
rapid fuses.
Peripheral unit connection
To access peripheral unit connections carry out the
following steps:
- Disconnect the boiler from the power supply
- Remove the casing by unhooking it from the
instrument panel
- Rotate the control panel while pulling it forwards
- Unscrew the three screws on the back cover of
the instrument panel
- Unhook the right side clip and the right front clip;
then lift the ap
The following connections are located here:
- the room thermostat 1.
Modulating device connection (BUS)
For connection of the modulating device accessed
directly via the electronic PCB - see the wiring dia-
gram on the next page.
If there are several modulating devices, connect
them in parallel.
Caution!
For the connection and positioning of the
wires belonging to optional peripheral
units, please refer to the installation manu-
als of these units.
H05V2V2-F
120
140