Ardesto EWH-15OMWMI - Инструкция по эксплуатации - Страница 14

EN

14

INSTALLING NORMS (for the installer)

This product must be installed vertically to operate correctly. Once installation is complete, and before 

any water is added or the power supply is connected, use a measuring instrument (i.e. a spirit level) to 

check that the device has been installed perfectly vertical. 

The appliance heats water to a temperature below boiling point. It must be linked up to a mains water supply ac-

cording to the appliance performance levels and capacity. Before connecting the appliance, it is first necessary to: 

-   Check whether the characteristics (please refer to the data plate) meet the customer’s requirements. 

-   Make sure the installation conforms to the IP degree (of protection against the penetration of liquids) of the 

appliance according to the applicable norms in force. 

-   Read the instructions provided on the packaging label and on the appliance data plate.

This appliance was designed to be installed only inside buildings in compliance with the applicable norms in 

force. Furthermore, installers are requested to keep to the following advice in the presence of: 

-  

Damp

: do not install the appliance in closed (unventilated) and damp rooms. 

-  

Frost

: do not install the appliance in areas where the temperature may drop critically and there may be a risk 

that ice may form. 

-  

Sunlight

: do not expose the appliance to direct sunrays, even in the presence of windows. 

-  

Dust/vapours/gas

: do not install the appliance in the presence of particularly dangerous substances such as 

acidic vapours, dust or those saturated with gas. 

-  

Electrical discharges

: do not install the appliance directly on electrical supplies that aren’t protected against 

sudden voltage jumps. 

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

ent 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. We recommend installing the appliance 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 distances. To facilitate maintenance, make sure there is a clear-

ance of at least 50 cm inside the enclosure for access to the electrical equipment. 

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 materi-

als which cannot resist such high temperatures.

The appliance must not be supplied with water of hardness less than 12°F, nor with especially hard water (greater 

than 25°F); we recommend installing a water softener, properly calibrated and controlled - do not allow the re-

sidual hardness to fall below 15°F.

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. 1). On the other side of the 

“T” piece union screw the safety valve supplied (

A

 Fig. 1). 

Safety group complies with the European standard EN 1487

Some countries may require the use of hydraulic special safety devices; 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 appliance's drain outlet must be connected to a drain pipe of diameter at least equal to the of the outlet itself, 

with a funnel to permit an air gap of at least 20 mm for visual inspection. Use a hose to connect the safety group 

to the mains cold water supply; fit a cock if necessary (

D

 fig. 1). In addition, a water discharge tube on the outlet 

C

 Fig. 1 is necessary if the emptying tap is opened.

When installing the safety device, do not tighten it fully down, and do not tamper with its settings.

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 reducer 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. 

“Gravity drain” connection 

Specific taps must be used for this type of installation and the connection must be implemented as shown in the 

diagram in Fig. 2. With this solution, the water heater can work at any mains pressure and no type of tap must be 

connected on the outlet pipe, which acts as a vent.

Electrical connection 

It is mandatory, before installing the appliance, to perform an accurate control of the electrical system by verifying