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ELECTRICAL CONNECTIONS

WARNING!

Before you get access to terminals, all supply circuits must be disconnected.

IMPORTANT

Where an appliance is installed in a room containing a bath or show-

er, the appliance and any electrical switch or any appliance control,

utilitising mains electricity should be situated specifically in accord-

ance with current IEE wiring regulations, Health & Safety document

no. 635 (Electricity at Work Regulations). For unusual locations spe-

cial procedures may be necessary. BS 6798 gives detailed guidance

on this aspect.

The appliance is supplied with a power supply cable (should the lat-

ter need to be replaced, use only original spare parts supplied by the

manufacturer).

It is advisable to carry out a check on the electrical system to ver-

ify conformity to the regulations in force. Verify that the electrical

system can suitably withstand the water heater's maximum power

consumption values (refer to the data plate), in terms of the size of

the cables and their conformity to the regulations in force.

ELECTRICAL CONNECTION

Permanent power supply (cable supplied with the appliance)

Signal HC-HP (cable not supplied with the appliance)

Signal AUX/PV/SG (cable not supplied with the appliance)

Signal BUS* (cable not supplied with the appliance)

* IMPORTANT: in the bus connection, to avoid interference problems, use a shielded cable or twisted pair cable.

16 /EN

Nuos Flex

or 3183TQ Flex 3-Core x 2.5mm

heat resistant BS6500

13 amp Class A Double Pole Isolating

Swicth with at least 3 mm pole separation

and electric and mechanical indicators.

Fused 13 amp.

Zone 2

Zone 3

3G ø min. 1.5 mm²

2G ø min. 1 mm²

max. 50 m - 2G ø min. 1 mm²

It is forbidden to use multiple outlet sockets, extension cables or

adaptors. It is forbidden to use piping from the water, heating and

gas systems for earthing the appliance.

Prior to operating the machine, make sure that the electricity mains

voltage conforms to the value indicated on the appliance's data

plate. The manufacturer of the appliance shall not be held liable for

any damage caused by failure to earth the system or due to anom-

alies in the electric power supply. To disconnect the appliance from

the mains, use a bipolar switch complying with all applicable CEI-

EN regulations in force (minimum distance between contacts 3 mm,

switch preferably equipped with fuses).

The appliance must comply with the European and national stand-

ards, and must be protected by a 30mA RCD.

The main circuit board on the appliance is fitted with an earth contact

for operating purposes only, not for safety purposes.

CABLE

H05VV-F

FUSE

B 16A