Ariston 3300761 Istruzioni tecniche - Pagina 14

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INSTALLATION

CAREFUL

BEFORE ANY INTERVENTION AT THE

POWER PLANT, SWITCH OFF THE POWER

SUPPLY WITH THE HELP OF THE EXTERNAL BIPOLAR

SWITCH.

Electrical connections

For greater safety, have qualified personnel inspect the electrical system

carefully.

The manufacturer is not responsible for any damage caused by failure

to ground the system or power outages.

Check that the installation is suitable for the maximum power absorbed

by the boiler and indicated on the stamp plate.

Check that the cable section is suitable, not less than 0.75 mm2 in any

case. Proper connection to an efficient earthing system is essential to

ensure the safety of the device.

The power cord must be connected to a 230V-50Hz mains with respect

to LN polarization and grounding.

If the power cord is damaged, it must be replaced by a qualified

technician using original parts available from the manufacturer or an

authorized service center.

Power cord

IMPORTANT!

CONNECTIONS TO THE ELECTRICAL NETWORK MUST

BE MADE WITH A FIXED CONNECTION (NOT WITH A

MOBILE PLUG) AND EQUIPPED WITH A BIPOLAR

SWITCH WITH A CONTACT OPENING DIST OF AT

LEAST 3 MM.

Multiple sockets, extension cords or adapters are prohibited.

It is forbidden to use the pipes of the sanitary, heating and gas

installation for the construction of the earthing installation of the appliance.

The boiler is not protected against the effects of lightning. If

network fuses need to be replaced, use fast 2A fuses.

14 /

H05V2V2-F

Connecting accessories and peripheral equipment

To access the connection of accessories and a

peripheral equipment:

- Disconnect the boiler from the power supply

- Unlock and remove the control panel cover

TA1

I KNOW

peripheral

BUS - = camera sensor connection (device

modulating)

SE - External Probe

TA1 - Room thermostat 1

Note: The limit thermostat for underfloor heating can be connected in series

with TA1 thermostat - see diagram on next page.

Connecting the room thermostat

- Insert the thermostat wires into the opening next to it

connector

- Connect the wires to terminal

TA1, removing the factory

connected bridge

- Replace the control panel cover

BUS