ARISTON Electric Water Heaters Instruction Manual

: October 27, 2023
: Ariston

ARISTON Electric Water Heaters

GENERAL SAFETY INSTRUCTIONS

This manual is included in the water heater delivery set. It should be kept alongside the appliance even if the latter is transferred to another user and/or moved to another location.
Read this manual carefully. It provides important safety precautions for the installation, use, and maintenance of the water heater.
The appliance is installed at the expense of the user.
The use of the appliance for purposes other than those specified is strictly forbidden. The manufacturer is not to be held responsible for any damage due to failure to comply with the instructions set in the manual.
All installation and maintenance works must be carried out by a qualified technician in conformity with the current rules and regulations, as well as the directions provided by the manufacturer.
Incorrect installation can cause personal injury and property damage. The manufacturer is not to be held responsible for damage due to incorrect installation.
Keep all packing material (clips, plastic bags, polystyrene foam, etc.) out of children’s reach. The packing material is hazardous to health.
The appliance is not intended for use by persons (including children)with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.
It is strictly forbidden to touch the appliance barefoot or with wet hands and/or feet.
Repair works should be carried out by a qualified technician using original spare parts produced by the manufacturer. Failure to comply with this requirement invalidates all warranties on the part of the manufacturer.
The temperature of the hot water is adjusted by a thermostat that acts as a protection against overheating.
Water supply must be done in accordance with paragraph «Hydraulic Connection».
Electric wiring must be done in accordance with the paragraph «Electrical Connection».
It is strictly forbidden to modify or replace the safety valve with the other one which does not meet the current rules and regulations, if it is not included in the delivery set.
No inflammable items should be kept near the appliance.
The water heater is a technically sophisticated electrical appliance for household purposes.
Whenever electrical water heater installation involves re-equipment (rearrangement) of residential and non-residential premises in residential
buildings, installation should be performed only after relevant permissions have been obtained in a proper manner.
The water heater must be transported in a vertical or a horizontal position (depending on the model) by any covered kind of transport. The water
the heater must be fixed securely in order to avoid any possible damage, drift or drop inside the vehicle.
It is forbidden to subject impact loads to the water heater during cargo handling operations.
If it is necessary to grab the box by clips during transportation, it is recommended to grab the sides of the packaging where following symbolis
printed.
In the warehouse, which stores the product, air temperature must be from +5°C to + 40°C and relative humidity must be less than 80% at +25°C. If the temperature is lower, there must be no condensation.
The product must be stored in containers in storage areas, protected from exposure to precipitation, in the absence of acids, alkalis, and other impurities vapors.

SYMBOLS

Symbol	Meaning
Failure to comply with this requirement can result in severe injuries and

even death
| Failure to comply with this requirement can result in damage to property, plants, or animals
| General requirements and safety precautions for use

GENERAL SAFETY STANDARDS

Ref.	Warning	Risk	Symbol
1

Do not open the water heater body

| Electric shock. Burns due to the contact with overheated components. Injuries due to the contact with sharp edges or protrusions|
2|

Do not start or stop the water heater by plugging it into or out of the wall outlet. Use the power switch for this purpose

|

Electric shock in case of cable, plug, or socket damage

|
3|

Do not use the water heater with a damaged power supply cable

|

Electric shock from live unsheathed wires under voltage

|

4

|

Do not leave anything on top of the appliance

| Injury from an object falling off the appliance due to its vibrations|
Damage to the appliance or any objects underneath it due to the object falling off following vibrations|

5

|

Do not climb onto the appliance

|

Injury from the falling appliance

|
Damage to the appliance or any objects underneath it due to the appliance falling off from its place of installation|

6

8

| Make electrical connections using cables with conductors of suitable section| Incorrect conductor section results in cables overheating. It may cause fire.|

9

|

Make sure all control and protection functions operate correctly before start the appliance

|

Shutdown or damage of the appliance due to out-of-service or unregulated control system operation

|

Anti-legionella recommendations

Informative
Legionella are small rod shaped bacteria which are a natural constituent of all fresh waters. Legionaries’ disease is a serious pneumonia infection caused by inhaling the bacteria Legionella pneumophilia or other Legionella species. This bacterium is frequently found in domestic, hotel and other water systems and in water used for air conditioning or air cooling system. Hence the main intervention against the condition is prevention, through control of the organism in water systems. The European standard CEN/TR 16355 gives recommendations for good practice concerning the prevention of Legio-nella growth in drinking water installations but existing national regulations remain in force.

General recommendations

“Conditions for Legionella growth”. The following conditions encourage Legionella growth:
water temperature between 25 °C and 50 °C. To restrict the growth of Legionella bacteria, the water temperature shall be in a range that the bacteria will not grow or have minimum growth, wherever possible. Otherwise, it is necessary to disinfect a drinking water installation by means of a thermal treatment;
stagnation of the water. To avoid long periods of stagnation, the water in every part of the drinking water installation should be used or flushed at least weekly;
nutrients, biofilm and sediment within the installation including water heaters, etc. Sediment can support the growth of Legionella bacteria and it should be removed on a regular basis from e.g. storage systems, water heaters, non-flown through expansion vessels (e.g. once a year).

Regarding to this storage water heater, if

the product is switched-off for a period of time [months] or
the water temperature is kept constant in the range 25 – 50°C and the Legionella bacteria could grow in the tank. In such circumstances, reduce the proliferation of the bacteria by running a “thermal sanitisation cycle”.

Water heaters are sold with software that allows a “thermal sanitisation cycle” to be run when it is activated in order to reduce the proliferation of Legionella in the tank. This cycle is suitable for domestic hot water systems and complies with the guidelines for the prevention of Legionella stipulated in Table 2 of standard CEN/TR 16355 (see below).

Table 2 – Types of hot water system

Electromechanical water heaters are sold with the thermal sanitisation cycle disabled (default setting). If, for some reason, any of the above “conditions in favour of the proliferation of Legionella” occurs, it is strongly recommended to enable this function according to the instructions found in this manual [see <>]. However, the thermal disinfection cycle does not kill all Legionella bacteria in the storage tank. It follows that if the function is disabled, the Legionella bacteria may reoccur. Note: when the software performs the thermal sanitisation treatment, it is likely that the power consumption of the water heaters increases. Electromechanical water heaters are sold with the thermal sanitisation cycle disabled (default setting). If, for some reason, any of the above ‘’Conditions in favour of the proliferation of Legionella’’ occurs, it is strongly recommended to enable this function according to the instructions found in this manual [see <>]. However, the thermal disinfection cycle does not kill all Legionella bacteria in the storage tank. It follows that if the function is disabled, the Legionella bacteria may reoccur. Note: when the software performs the thermal sanitisation treatment, it is likely that the power consumption of the water heaters increases. Caution: the water temperature in the tank can cause immediate serious burns when the software runs the thermal disinfection treatment. Children, disabled persons and the aged are particularly at risk of burns. Check the water temperature before taking a bath or shower.

TECHNICAL CHARACTERISTICS

Product range| 30 SLIM| 40 SLIM| 50 SLIM| 65 SLIM| 80 SLIM| 50| 65| 80| 100| 120| 150
---|---|---|---|---|---|---|---|---|---|---|---

Weight (kg)

| Enamel| 12| 14| 17| 19| 21| 15| 17| 19| 23| 28| 32
Inox| 9| 11| 12| 14| 16| 12| –| 15| 17| 20| 25

This appliance is conforming with the international electrical safety standards IEC 60335-1 and IEC 60335-2-21.

The products are compliant according to:

TP TC 004/2011 “Technical regulations of the Customs Union on safety of low voltage equipment”
TP TC 020/2011 “Technical regulations of the Customs Union on electro-magnetic compatibility”.

INSTALLING NORMS

Attention! The installation and set-up of the water heater must be carried out by a qualified technician in conformity
with the applicable rules and hygiene and sanitary standards in force and with any provisions set forth
in this manual.

Hot-water boiler bonding against the wall

Water heater mounting is made on the main wall using brackets and fastening hooks. Fastening hooks (not included in the supply) with a diameter of at least 12 mm are recommended. Depending on the model, you will need 2 or 4 of the fastening hooks.
Prepared fastening must support a weight that is three times higher than the weight of the water heater filled with water.
The appliance should be installed as close as possible to the point of water intake to limit heat (A in Fig. 1).
Allow for a clearance of at least 50 cm under the appliance and a clearance of 10 cm from the ceiling for maintenance.
Fastening of hooks to the wall must prevent inadvertent movement of the bracket of the water heater over them. After installation, be sure to check security of the fastening.
To prevent the property of the customer and (or) third party from damage caused by failures of hot water supply system, it is recommended to mount the water heater in the premises provided with waterproof floor and sewer drain. Never put objects sensitive to water under the water heater.
During mounting water heater in the unprotected areas, you must install underneath the protective tray with drainage into the sewer.

Hydraulic connection
Attention! Installation of safety valve Included In the delivery set Is necessary.
Do not install any stop valve between the safety valve and cold water inlet of the water heater and do not block
the drain hole of the safety valve.
Demountable connectors should be used for the water heater connection to the water supply system.

Standard connection

Safety valve (A in Fig. 2) supplied must be installed on the cold water inlet of the water heater (marked with the blue ring).
Connect the inlet of the safety valve to the cold water line with a tube or flexible hose.
Connect a tube or flexible hose to the hot water outlet of the water heater (marked with the red ring) for hot water
removal to the draw-off point.
For easy maintenance, it is recommended to install a T-piece with shut-off (B in Fig. 2) between the cold water inlet and safety valve of the water heater. It will help to drain water from the water heater without safety valve removal.
To facilitate the access of air into the tank when draining water, it is recommended to install an additional T-piece with shut-off valve at the hot water output.
When water pressure exceeds 5 bar, place before the safety valve a reducer to reduce the pressure.
The device cannot work with water where hardness is less than 12°F. If water is with hardness above 25°F,
it is necessary to use softener to reduce the formation of scale and the probability of failure of the heating element.
The water hardness should not fall below 15°F Connection to open tank filled with water
Water is supplied to the water heater from the tank by gravity. Safety valve is not necessary in this type of connection.

Electrical connection

Attention! Electrical wiring should be done by a qualified technician, ensuring it complies with safety rules. The manufacturer is not to be held responsiable for any damage caused by the incorrect earthing of system or for fault defaults of electricity supply.

If the product is already equipped with a cable and plug, simply connect it to a power supply source.
If the water heater is supplied without a power supply cable, use a cable featuring the same characteristics (type H05VV-F 3×1,5 mm2, Ø 8,5 mm) for connection. Remove the cover. The power supply cable should be threaded through the relevant hole on the cover of the appliance and fixed to the thermostat terminals. Then every wire should be fixed in place by the corresponding screw.
The water heater must be earthed. Grounding scheme should ensure the absence of electric potential on the body of the water heater. The earth cable (of yellow-green color) should be fixed to the terminal marked by the symbol . Fix the power supply cable using the cable clamps.

Make sure that the power supply voltage conforms to the water heater technical characteristics indicated on the data plate.

USER INSTRUCTIONS

CAUTION Observe all general warnings and safety standards listed at the beginning of this text in full; all such instructions are obligatory.

Advice for user

Avoid positioning any objects and/or appliances that could be damaged by water leaks beneath the water heater.
Should you not use any water for an extended period of time, you should: disconnect the appliance from the electrical supply by switching the external switch to “OFF”; turn off the plumbing circuit taps.
Hot water at above 50°C flowing out of the taps at the point of use could cause serious scalds or even death from
burns. Children, the disabled and the elderly are more exposed to the risk of burns. It is strictly forbidden for the
user to perform any routine or extraordinary maintenance.
To clean the external parts use a damp cloth soaked in soap and water.

Adjusting the temperature and activating the functions
The product is set to “Manual” by default, with a temperature set to 70 °C and the function “ECO EVO” is active.
In case of a power failure or if the product is switched off using the button ON/OFF (Ref. A), the last temperature set remains saved.
Slight noise may occur during the heating phase due to the water being heated.

For models equipped with user interface shown in figure 9 and 11:
Switch the appliance on by pressing the ON/OFF button (Ref. A). Set the desired temperature by selecting a level between 40°C and 80°C using the “ + ” and “ – ”. buttons. During the heating phase, the LEDs (Ref. 1-5) related to the temperature reached by the water remain on; the subsequent ones, until the temperature is set, flash progressively. If the temperature drops, for example due to water being drawn, the heating is automatically reactivated and the LEDs between the last one on (steady) and that related to the set temperature start
to flash progressively again.

For models equipped with user interface shown in figure 10:
Switch the appliance on by pressing the ON/OFF button (Ref. A) During the heating phase, the lines on both sides of the display (Ref. C) remain on.
On first installation, the display must be oriented according to the installation of the product. If vertical no action is required; if horizontal, the display must be oriented accordingly by pressing the “MODE” + “ECO” simultaneously for 5 seconds.

MAINTENANCE AND REPAIR WORKS

Attention! Do not try to repair the appliance by yourself. All maintenance and repair works should be carried out by a qualified technician in conformity with the safety norms and with any provisions set forth in this manual.

Water Drain
If there is a possibility that the ambient temperature drops below 0°C in the room where the appliance is installed, drain water from the water heater.

Disconnect the appliance from the electrical supply;
Make sure that the water in the appliance is of safe temperature;
Turn off the tap of cold water supply to the water heater;
Turn on the hot water tap on mixer for pressure relief inside the tank;
Turn on the T-connector stop valve installed at hot water outlet (marked with red ring) for air access into the tank. If it is absent, remove the connections at the water heater outlet;
Connect drain hose directed into the sewer to the T-connector stop valve installed at the cold water inlet of the water heater (marked with the blue ring) and open it. If there is no T-connector, connect the hose to water heater inlet;
After draining, make sure there is no water inside the water heater.

Freezing of water inside the water heater leads to irreversible changes and defects. It invalidates all warranty liability on the part of the manufacturer

Replacing internal parts

Prior to work, disconnect the appliance from the power supply and drain the water from the water heater.
Remove the appliance cover.
To replace the thermostat pull it straight out ot the cluster and disconnect from power supply.
To replace heating element and magnesium anode (models with an autoclave flange) remove the nut (D in Fig. 3), remove the
flange holder (S in Fig. 3) and open the flange (F in Fig. 3) by pressing it inside. Remove the flange by turning it on its axis.
To replace heating element and magnesium anode (models with a flange on the 5 bolts) remove 5 nuts (C in Fig. 4) and remove
the flange (F in Fig. 4)

During reassembly, make sure that all components are put back in their original positions.
We recommend replacing the flange gasket every time when reassembling.
Prior to any repair or maintenance procedure, disconnect the unit from power source. Use original spare parts of the manufacturer only

CONNECTION STATUS DESCRIPTION

ARISTON-Electric-Water-Heaters-
FIG-18

USEFUL INFORMATION

If the water comes out cold, have the following checked:
the presence of voltage on the power terminal block (M Fig. 7 and 8);
the circuit board;
the heating parts of the heating element;
inspect the bypass pipe (X Fig. 7 and 8);
the sensor holder rods (K Fig. 7 and 8).
If the water comes out boiling hot (steam in the taps)
Disconnect the appliance from the electricity supply and have the following checked:
the circuit board;
the amount of scale on the boiler and components;
the sensor holder rods (K Fig. 7 and 8).
If the hot water delivery is insufficient:
Have the following checked:
the pressure of the water mains;
the condition of the deflector on the cold water intake pipe;
the condition of the hot water pipe;
the electrical components.
Water trickling from the pressure safety device
During the heating phase, some water may trickle from the tap. This is normal. To prevent the water trickling, a suitable expansion vessel must be installed on the flow system. If the trickling continues even after the heating phase, have the following checked:
device calibration;
the pressure of the water mains.
Caution: Never obstruct the appliance outlet!

NEVER ATTEMPT TO REPAIR THE APPLIANCE YOURSELF – ALWAYS HAVE THIS DONE BY A QUALIFIED TECHNICIAN.

The indicated data and specifications are not binding; the manufacturer reserves the right to modify them at his own discretion notification or replacement.

This product is in conformity with REACH regulations.
This product conforms to Directive WEEE 2012/19/EU.
The symbol of the crossed waste paper basket on the appliance and its packaging indicates that the
product must be scrapped separately from other waste at the end of its service life. The user must therefore hand the equipment over to a sorted waste disposal facility for electro-technical and electronic equipment at the end of its service life.
Alternatively, he may return the equipment to the retailer at the time of purchase of a new equivalent type of appliance. Electronic equipment of size less than 25 cm can be handed over to any electronics equipment retailer whose sales area is at least 400 m2 for disposal free of charge and without any obligation to purchase new product.