Ariston VLS EVO INOX 80 PW O 3700632 - Инструкция по эксплуатации - Страница 54

EN

In the case of walls made of bricks or perforated blocks, partition walls featuring limited static, or masonry different 

in some way from those stated, you first need to carry out a preliminary static check of the supporting system.

The wall-mounting fastening hooks must be designed to support a weight that is three times higher than the 

weight of the water heater filled with water. 

Fastening hooks with a diameter of at least 12 mm (Fig. 3) are recommended.

We recommend installing the appliance (A Fig. 1) as close as possible to the delivery points to minimise heat loss 

along the pipes.

Local regulations may provide for restrictions on installation in bathrooms; observe any regulatory minimum dis-

tances.

To facilitate maintenance, make sure there is a clearance of at least 50 cm inside the enclosure for access to the 
electrical equipment.

Multi position installation

The product can be installed both vertically and horizontally (Fig.  2). During horizontal installation, rotate the 
appliance clockwise so that the water pipes are located to the left (cold water pipe at the bottom).

HYDRAULIC CONNECTION 

Connect the water heater’s inlet and outlet with pipes or fittings that are able to withstand temperature in excees 

of 90 °C at a pressure exceeding that of the working pressure. Therefore, we advise against the use of any materials 

which cannot resist such high temperatures. 

Screw a “T” piece union to the water inlet pipe with the blue collar. On one side of the “T” piece union, screw a tap 

for draining the appliance that can only be opened with the use of a tool (

B 

fig. 2). On the other side of the “T” 

piece union screw the safety valve supplied (

A 

fig. 2). 

CAUTION! For those nations that have taken on European norm EN 1487, the pressure safety device pro- vid-

ed with the product does not comply with that norms. According to the norm, the device must have a maxi-

mum pressure of 0.7 MPa (7 bar) and have at least: a cut-off valve, a non-return valve, a control mechanism 

for the non-return valve, a safety valve and a water pressure shut-off device. 

Some countries may require the use of alternative safety devices, as required by local law; the installer must check 

the suitability of the safety device he tends to use. Do not install any shut-off device (valve, cock, etc.) between the 

safety unit and the heater itself. 

The device relief must be connected to a relief pipe that has a diameter at least identical to the one of the equip-

ment connection. Use a funnel that creates an air gap of at least 20 mm and allows visual checks so that no person-

al injury, property damage or damage to animals will occur in case of safety device enabling. The manufacturer will 

not be held responsible for such damage. Connect the inlet of the pressure safety device to the cold water system 

using a flexible pipe, using a cut-off valve if necessary (D fig. 2). In addition, a water discharge tube on the outlet C 

fig. 2 is necessary if the emptying tap is opened. 

When tightening the pressure safety device, do not over tighten and do not tamper with it. It is normal for water 

to trickle from the tap during the heating phase; for this reason, it is necessary to connect the drain, which must 

always be left exposed to the atmosphere, with a drainage pipe that is installed sloping downwards in a place with 

no ice. If the network pressure is closed to the calibrated valve pressure, it will be necessary to apply a pressure re-

ducer far away from the appliance. To avoid any possible damage to the mixer units (taps or shower) it is necessary 

to drain any impurities from the pipes. The appliance must not be supplied with water of hardness less than 1 2°F, 

nor with especially hard water (greater than 25 °F); we recommend installing a water softener, properly calibrated 

and controlled - do not allow the residual hard- ness to fall below 15 °F. Before using the appliance, we recommend 

filling its tank with water and draining it completely so as to remove any residual. 

Electrical connection 

Before performing any operations, disconnect the appliance from the electricity mains using the external 

switch.

Before installing the appliance it is recommended to thoroughly check the electrical system to verify compliance 

with established regulations; the manufacturer is not liable for damage caused by lack of grounding or anoma-

lous power supply.

Check that the system is suitable for the maximum power absorbed by the water heater (please refer to the data 

plate) and that the cross-section of the electrical connection cables is suitable and complies with current laws.

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 

connection.

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 mm2, 8.5 mm in diameter. The power cord (H05 V VF 3x1.5 mm2 

diameter 8.5 mm) must be positioned in the special seat in the back of the appliance until it reaches the terminal 

(M Fig. 7 and 8) then lock the individual wires, tightening the appropriate screws. Secure the power cord with the 

included cable clamp.

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