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Electrical connection
It is mandatory, before installing the appliance, to perform an accurate control of the electrical system by verifying compli-
ance with current safety standards, which is adequate for the maximum power absorbed by the water heater (refer to the
data plate) and that the section of the cables for the electrical connection is suitable and complies with local regulations.
The manufacturer is not liable for damage caused by lack of grounding or anomalous power supply. Before starting up
the appliance, check that the power rating matches that given on the nameplate.
The use of multiplugs, extensions or adaptors is strictly prohibited.
It is strictly forbidden to use the piping from the plumbing, heating and gas systems for the appliance earthing con-
nection. If the appliance is supplied with a power supply cable, should the latter need replacing, use a cable featuring
the same characteristics (type H05VV-F 3x1.5 mm
, 8.5 mm in diameter. The power cord (H05VV-F 3x1 mm
dia. 8.5 mm)
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2
must be routed into the hole in the back of the appliance and connected to the thermostat terminals (M Fig. 4).
Use a two-pole switch conforming with national laws in force (contact gap of at least 3 mm, preferably equipped with
fuses) to disconnect the appliance's power supply.
The appliance must be grounded with a cable (yellow/green and longer than the phase cable) connected to the termi-
nals marked
(G Fig. 4).
Before starting up the appliance, check that the power rating matches that given on the nameplate. If the appliance is
not supplied with a power supply cable, choose one of the following installation modes:
- connection to mains with a rigid pipe (if the appliance has no cable clamp); use a cable with a minimum 3x1.5 mm
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section;
- with a flexible cable (type H05VV-F 3x1.5mm
, 8.5 mm in diameter) if the appliance is supplied with a cable clamp.
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Testing and ignition of the device
Before powering up the appliance, fill the heater with mains water. To do so, open the mains cock and the hot water
tap until all the air has been vented from the boiler. Check for leaks from the flanges, tighten down the fittings (not too
much!) if necessary.
Turn on the appliance with the switch.
MAINTENANCE REGULATIONS (for qualified personnel)
Before calling your Technical Servicing Centre, check that the fault is not due to lack of water or power failure.
Caution: disconnect the appliance from the mains before conducting any maintenance work.
Emptying the appliance
To drain the appliance, proceed as follows:
- close the tap, if installed (D Fig. 2), otherwise the central tap domestic power supply;
- turn on the hot water tap (wash basin or bathtub);
- open the drain valve B (Fig. 2).
Possible replacement of components
To work on the electronic board (Ref. T), first disconnect the power cord from the outlet.
Remove it from its housing, as shown in the figure 3, paying attention to the components that compose it (figure 3 )
by disconnecting the cable (Rif Y) from the card.
Periodical maintenance
The heating element (R fig. 8) should be descaled every two years (the frequency must be increased, if water is very hard)
to ensure it works properly. If you do not wish to use a liquid descaler (in this case please read the safety data sheets of des-
caling), you can simply break off the deposit, taking care not to damage the heating element's cladding. The magnesium
anode (N fig. 8) must be replaced every two years, otherwise the decay of the warranty. In the presence of aggressive or
waters rich in chloride it is recommended to check the status of the anode annually.
To remove this, disassemble the heating element and unscrew from the support bracket.
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