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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.
H05V2V2-F
120
140
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.
Caution!
For the connection and positioning of the wires belonging
to optional peripheral units, please refer to the installation
manuals of these units.