Nuos 300 Split - Boiler Ariston Thermo - Free user manual and instructions

USER MANUAL Nuos 300 Split Ariston Thermo

uple de serrage [Kgf x cm]

Activation / désactivation du m ode “PROGRAM” : P1, P2, P1+P2 (on/off).

Dear Customer: We wish to thank you for having purchased the heat pump water heater. We hope that it meets your expectations and may offer you optimal service coupled with maximum energy saving for many years to come. Our group invests a lot of time, energy and economic resources in creating innovative solutions aimed at reducing the energy consumption of its products. Your choice shows sensibility and awareness towards reducing energy consumption, an issue directly related to environmental protection. Our constant commitment to creating innovative and efficient products coupled with your responsible behaviour in the rational use of energy both actively contribute to safeguarding the environment and natural resources. Store this manual with care; it is intended to provide information, warnings and suggestions on the correct use and maintenance of the appliance, so that you may fully appreciate all its qualities. Our technical assistance centre closest to you is at your complete disposal for answering any of your queries.

INTRODUCTION This manual is intended for final users of the heat pump water heater and plumbers responsible for the latter’s installation. Failure to observe the indications contained in this manual shall void the warranty. This manual is an integral and essential part of the appliance. It must be stored with care by the user and should always be passed on to new owners or users of the appliance, and/or when the latter is transferred to another system. In order to ensure correct and safe use of the appliance, both installer and user, each for his/her respective requirements, must read the instructions and precautions contained in this manual carefully, as they provide important safety indications concerning installation, use and maintenance of the appliance. This manual is divided into three distinct sections: - GENERAL INFORMATION This section contains useful general information relating to the description of the appliance and its technical features, besides information on the symbols, units of measurement and technical terms used. This section includes the water heater’s technical data and dimensions. - INSTALLATION This section is intended for installers. It contains all the indications and instructions that professionally qualified personnel must observe in order to ensure optimal installation of the appliance.

- OPERATING AND MAINTENANCE INSTRUCTIONS

This section contains all the information necessary for operating the appliance correctly and for assisting the user in carrying out regular checks and maintenance operations on the appliance. The manufacturer reserves the right to modify the data and contents of this manual without prior notice, with the aim of improving the quality of the relative products. To facilitate understanding of the contents herein, given that the manual is published in multiple languages and is valid for use in several countries, all the illustrations are grouped in the final pages and are common to the various languages.26

1.1 Description of the symbols used

1.2 Field of application

1.3 Instructions and technical norms

1.4 Certifications – CE marking

1.5 Packaging and supplied accessories

1.6 Transport and handling

1.7 Identification of the appliance

2. TECHNICAL FEATURES

2.1 Operating principle

2.2 Internal unit construction features

2.3 External unit construction features

3.1 Installer qualification

3.2 Implementing the instructions

3.3 Safety regulations

4.1 Location of the internal unit

4.2 Location of the external unit

4.3 Discharge of condensate

4.4 Tools for the connection of refrigerant lines

4.5 Preparing of the refrigerating pipes

4.6 Connecting the internal unit

4.7 Connecting the external unit

4.8 Making the vacuum, the connection and check the seal

4.9 Charge of the refrigerant gas

4.10 Hydraulic connections

4.11 Electrical connections

6.1 Initial start-up

6.3 Safety regulations

7.2 Turning the water heater on/off

7.3 Setting the temperature

7.4 Mode of operation

7.8 Electrical connections “Check”

7.11 Operation with two-tier electricity rate

8.1 Draining the appliance

8.4 Routine maintenance performed by users

8.5 Water heater disposal

ILLUSTRATIONSHeat pump water heater – GENERAL INFORMATION

7.7 Description of the symbols used

In terms of installation and operation safety, the symbols described in the table below are used in order to stress the importance of the relative risk warnings: Symbol

Failure to comply with this warning may result in injury to persons or, in some cases, death.

Failure to comply with this warning may result in serious damage to property and plants or injury to animals.

It is mandatory to comply with the general and appliance-specific safety measures.

1.2 Field of application

This appliance is intended for hot water production for domestic use or similar, at temperatures below boiling point. The appliance must be hydraulically connected to a domestic water supply line and to a power supply network. Exhaust ducts may be used for the entry and discharge of processed air. It is forbidden to use of the appliance for uses other than those specified. Any alternative use of the appliance constitutes improper use and is prohibited; in particular, the appliance may not be used in industrial cycles and/or installed in environments exposed to corrosive or explosive materials. The manufacturer shall not be held liable for any damage due to faulty installation, improper use or uses deriving from behaviour that is are not reasonably predictable, and incomplete or careless implementation of the instructions contained in this manual.

This appliance should not be operated by individuals (including children) with reduced physical or sensory abilities, or by inexperienced or unskilled individuals, unless adequately supervised and trained regarding use of the appliance by persons responsible for their own safety. Children must be supervised by persons responsible for their safety so as to ensure that they do not use the appliance as a toy.

1.3 Instructions and technical norms

The purchaser pays for the appliance’s installation, which must be carried out by qualified personnel only, in conformity with national regulations in force and any provisions emitted by local authorities or bodies responsible for public health, and in accordance with the specific manufacturer indications contained in this manual. The manufacturer is responsible for the product’s conformity to the relevant construction directives, laws and regulations in force at the time the product is first commercialised. The designer, installer and user are each exclusively responsible, in their respective fields, for knowing and observing the legal requirements and technical regulations concerning the design, installation, operation and maintenance of the appliance. Any reference to laws, regulations or technical specifications contained in this manual is purely for information purposes; any new laws introduced or modifications to existing laws are not in any way binding on the manufacturer towards third parties. It is necessary to ensure that the power supply network to which the product is connected complies with the EN 50160 norm (under penalty of warranty invalidation). Relative to France, ensure that installation complies with the NFC 15- 100 norm. The tampering of product integral parts and/or supplied accessories invalidates the warranty.

1.3 Certifications – CE marking

The CE marking applied to the appliance certifies that the latter conforms to the essential requirements of the following European Directives: - 2006/95/EC concerning the safety of electrical equipment. - 2004/108/EC concerning electromagnetic compatibility. The inspection is carried out according to the following technical standards:Heat pump water heater – GENERAL INFORMATION

1.5 Packaging and supplied accessories

The device consists of an external unit (heat pump) and an internal one (water heater), this could be anchored to a wooden pallet (only 300L model), Both units are protected by polystyrene buffers and cardboard on the outside; all the materials are recyclable and eco-compatible. The following accessories are included: - Shielded probe connection cable between units; - Connection pipe for condensation water of the external unit; - Drainage pipe for condensation water; - Wall hole protection; - Instruction manual and warranty documents; - One 3/4” dielectric coupling. - Rubber grommets and cable clips with screws.

1.6 Transport and handling

Upon delivery of the product, check that the latter has not been damaged during transport and that no signs of damage appear on the packaging. In the event of damages, immediately notify any claims to the forwarder. WARNING! Absolutely imperative that the external unit is handled and stored in an upright position, with the aim of ensuring adequate provision of oil inside the cooling system and avoid damage to the compressor. The indoor unit can be moved both vertically and horizontally. The packaged unit can be moved by hand or with forklift trucks, taking care to respect the directions above. It is recommended to keep the product in its original packaging until you install it in the selected area, particularly in the case of a construction site. After unpacking, check for accuracy and completeness of the supply. In case of non-compliance, please contact the seller, taking care to make a communication within the law. WARNING! Keep the packaging elements out of the reach of children, as they are potentially dangerous. When transporting or handling the appliance after the initial start-up, observe the aforementioned indication concerning the allowed tilt angle of the external unit, and ensure that all water has been drained from the tank. If the original packaging missing, provide an adequate protection for the appliance to prevent any damages, for which the manufacturer shall not be held liable.

1.7 Identification of the appliance

The main information for identifying the appliance is contained on the adhesive data plate located on the water heater casing. Internal unit

power supply voltage.

aximum absorbed power

ressure of the refrigeration circui

heating element mode

thermal power yielded in heat pump mode

ower in heat pump mode

type of refrigerant and charge

maximum tank pressureHeat pump water heater – GENERAL INFORMATION

Design pressure of the circuit serial no.

2. TECHNICAL FEATURES

2.1 Operating principle

The heat pump water heater does not directly heat water using electrical energy, but makes a more rational use of the latter to obtain the same result in a more efficient manner, namely by consuming approx. 2/3 less water. The efficiency of a heat pump cycle is measured by the Coefficient of Performance (COP), i.e. the ratio between the energy supplied to the appliance (in this case, the heat transferred to the water to be heated) and the electrical energy used (by the compressor and the appliance’s auxiliary devices). The COP varies according to the type of heat pump and to its relative conditions of operation. For example, a COP value equal to 3 indicates that for every 1 kWh of electrical energy used, the heat pump supplies 3 kWh of heat to the medium to be heated, of which 2 kWh are extracted from the free source.Heat pump water heater – GENERAL INFORMATION

Internal unit construction features fig. 1-2.

Outlet hot water 3/4” pipe

Inlet cold water 3/4” pipe

Outlet gas pipe 3/8 “

G Inlet gas pipe 1/4 “

Housing electrical connections and heating element

Inlet cold water 3/4” pi

feets with adjustable height

Inlet gas pipe 1/4 “

V Outlet gas pipe 3/8 “

lectrical connections

Outlet hot water 3/4” pipe

External unit construction features fig. 3.

Gas connections housing cover

Hole for condensation drain

Power supply, cable not supplied with the product

NTC sensor for heating element zone

Impressed current anode

Serial connection board

Defrost four way valve

Safety pressure switch

NTC sensor for hot water pipe zo

NTC sensor for evaporator and inlet air

supplied with the product

cable not supplied with the productHeat pump water heater – INSTALLATION

Descale the components, in accordance with the instructions of the safety data sheet included with the product used, while ventilating the room and wearing protective clothing; avoid mixing different products and protect the appliance and surrounding objects. Personal injury caused by acidic substances coming into contact with skin or eyes; inhaling or swallowing harmful chemical agents.

Damage to the appliance or surrounding objects due to corrosion caused by acidic substances.

Make sure that any portable ladders are securely positioned, that they are sufficiently resistant, that the steps are intact and not slippery, that these do not move around when someone climbs on them and that someone supervises at all times.

Personal injury caused by falling from a height or cuts (stepladders shutting accidentally).

Make sure that the work area has adequate hygiene and health conditions in terms of lighting, ventilation and the solidity of relevant structures.

Personal injury caused by knocks, stumbling etc.

Wear individual protective clothing and equipment during all work phases. Personal injury caused by electrocution, falling splinters or fragments, inhalation of dust, shocks, cuts, puncture wounds, abrasions, noise and vibration.

All operations inside the appliance must be performed with the necessary caution in order to avoid sudden contact with sharp parts.

Personal injury caused by cuts, puncture wounds and abrasions.

Before handling, empty all components which may contain hot water and perform bleeding where necessary.

Personal injury caused by burns.

Make all electrical connections using suitably

Fire caused by overheating due to electrical current passing through undersized cables.

Protect the appliance and all areas in the vicinity of the work area using suitable material.

Damage to the appliance or surrounding objects caused by falling splinters, knocks and incisions.

Handle the appliance with the necessary protections and with due caution. When lifting loads with cranes or hoists to make sure of the lifting stability and efficiency in relation to the movement and weight of cargo, sling load correctly, apply ropes to control the movements, handle from a position with a full view of the entire path, do not allow the passage of persons under suspended load. Damage to the appliance or surrounding objects caused by shocks, knocks, incisions and crushing.

Arrange materials and equipment in such a way as to make handling easy and safe, and avoid the formation of any piles which could give way or collapse.

Damage to the appliance or surrounding objects caused by shocks, knocks, incisions and crushing.

Reset all safety and control functions affected by any work performed on the appliance and make sure that they operate correctly before restarting the appliance.

Damage or shutdown of the appliance caused by out-of-control operation.Heat pump water heater – INSTALLATION

WARNING! Observe the general warnings and safety instructions listed in the previous paragraphs and strictly adhere to the indications therein contained.

4.1 Location of the internal unit

WARNING! Prior to starting any installation activities, ensure that the location where the water heater is to be installed satisfies the following requirements: a) Respect the Minimum installation dimensions specified in Figure 5, b) Avoid installing the appliance in rooms which may favour frost build-up. The product is designed for indoor installations, the product’s safety and performance levels are not guaranteed in the event of outdoor installation. c) Ensure that the installation site and the electrical and hydraulic systems to which the appliance must be connected fully comply with the regulations in force. d) The chosen site must have, or must be suitable to house, a single-phase 220-230 V ~ 50 Hz power supply socket. e) The support surface must ensure a perfectly horizontal operating position, and can withstand the weight of the water heater filled with water. f) The chosen site must conform to the appliance’s IP protection rating (protection against the penetration of liquids) as specified by the regulations in force. g) The appliance must not be exposed to direct sunlight, even when windows are present. h) The appliance must not be exposed to particularly aggressive substances such as acidic vapours, dust or gas-filled environments.

i) The appliance must not be directly installed on lines that are unprotected against overvoltage.

j) The appliance must be installed as close as possible to the points of use to limit heat dispersion along the piping. Positioning on the ground – 300 litres floor standing model a) Once the suitable installation position has been located, remove the packaging and remove the fixings visible on the pallet where the product is based (fig.6). b) Fix the feet on the ground (through the appropriate holes) using suitable screws and rawlplugs. Positioning on the ground – 150-200 litres wall hung model a) Fix the product through the brackets on a bearing wall, using the installation template printed on the packaging. For each bracket using two bolts,and two chrome screws concrete type Fischer M10, M12 or M14, No. 2 nuts M10, M12 or M14, No. 2 washers M10, M12 or M14. Make sure the screws and bolts are tight. (see Figure 7). b) This model can be installed on a support tripod only use the appropriate model provided by the manufacturer of the water heater. In this case the product must be secured to a bearing wall over the upper bracket, or both.

4.2 Location of the external unit

WARNING! Prior to starting any installation activities, ensure that the location where the water heater is to be installed satisfies the following requirements: a) establish the most suitable position on the wall, allowing enough room to easily perform any maintenance (see fig. 3); b) Install the outdoor unit on a solid wall in a very secure way, in a place where noise and exhaust air do not cause trouble. Choose a place that does not obstruct the free passage and which is easy to evacuate the condensate produced. c) The plan of operation must be exactly horizontal, check with a level (Fig. 3). d) Follow the steps and only then start making the connections of the pipes and electric cables; e) secure the brackets to the wall using suitable fixings for the wall (be careful to cables and pipes in the wall), use dowels larger than the weight would require: while operating the machine vibrates and must be installed for years without any screw come loose.Heat pump water heater – INSTALLATION

Discharge of condensate The condensate or water, which is formed in the outdoor unit during heating operation, must be eliminated, freely or through the drain. Fix the drain connection into the hole which is located on the bottom of the unit and connect the plastic tube with the connector. Ensure that the condensate water runs out in a suitable drain and make sure the discharge is made without hindrance.

4.4 Tools for the connection of refrigerant lines

a) Group manometer suitable for use with R134a, with charge and vacuum tubes; b) Vacuum pump; c) Torque wrenches for nominal diameter of 1/4 “and 3/8” sizes on both sides to respond to the measures of the pipe unions; d) Flaring clamp ø nominal 1/4 “and 3/8”, equipped with a terminal receiving opening so that the projection of the copper tube can be adjusted from 0 to 0.5 mm in the working folder ; e) Pipe cutter; f) Pipe reamer; g) Leak Detector for R134a, a leak detector is used exclusively for HFC refrigerants. It must have a high detection sensitivity, minimum 5g per year.

4.5 Preparing of the refrigerating pipes

WARNING! Before carrying out any installation check the following: a) Use only copper tubes for air conditioners type (copper tubing for the refrigeration and the conditioning) or copper pipes with proper insulation (at least 6 mm thick), suitable for use with R134a; b) Never use piping with a thickness less than 0.8 mm; c) Provide a path of the pipes as short and simple as possible (maximum length 8 m with 3 m of fall). Do not provide a path that may obstruct the access to the cap and the removal of flange. See Figure 9. d) Protect the pipes and cables to avoid damage; WARNING! The re frigerant lines, and fittings for connection must be insulated to avoid dangerous burns, loss of performance and product malfunction. Ensure the insulating sheath of the tubes through fastening clamps to prevent it from moving. Remove the locking of the tubes shortly before making the connection: absolutely must prevent moisture or dirt from entering. If a pipe is bent too often becomes hard: Do not bend more than 2 times in the same section. Unwind the hose unwound without pulling (see fig. 8).

4.6 Connecting the internal unit

a) Shape the pipes according to the path; b) Remove the brass plug on the indoor unit and store them (check that no impurities are left); c) Cut the pipe to the fixed length, with a pipe cutter, avoiding any deformation; d) Remove burrs with pipe reamer avoiding to get impurities inside (keep down the tube); e) Insert the threaded brass flare nuts on the pipes in the correct direction; f) Insert the tube into the flaring tool and make the flange at the end of the connecting pipe, as indicated in the table (see fig. 10): ø NOMINAL ø EXTERNAL THICKNESS mm DIMENSION “A” mm FLARING TOOL DIMENSION “L” mm FLARING TOOL 1/4

After confirming that there are no wrinkles or tears on the flare, connect the pipes using two spanners, being careful not to damage the pipes. If the force is insufficient, then there will be leaks. Although the force is excessive, there may be losses because it is easy to damage the flange. The safest method is to tighten the connection by using a spanner and a torque wrench, in this case use the table:

Tightening torque [Kgf x cm]

Corresponding force (with 20 cm spanner)

We recommend leaving a few inches of copper pipe, for any subsequent operations in near the taps.Heat pump water heater – INSTALLATION

4.7 Connecting the external unit

Remove the gas connections plastic cover, screw the flare nuts to connect the outdoor unit with the same method described for the internal unit.

4.8 Making the vacuum, the connection and check the seal (see fig 11).

Bleeding from the circuit should take place with a vacuum pump and pressure gauge assembly suitable for R134a. Make sure the vacuum pump is full of oil up to the level indicated by the oil gauge.

loose the caps of the taps of the 2 and 3 way valves (E), and of the service valve ©; verify that the two valves on the outdoor unit are closed (D);

connect the vacuum pump (B) to the service valve (C) by the attack of low pressure gauge (A);

After opened the valves of the vacuum pump (B), start it and let it run. Create a vacuum for about 20 / 25 minutes;

verify that the low pressure gauge (A) indicates a pressure of 1 bar-(or -76 cm Hg);

close the valves of the pump and shut off (B). Verify that the gauge needle does not move for about 5 minutes. If the needle moves, there are air leaks in the system, then you must check all the tightening and execution of flare at this point repeat the procedure from step c;

Disconnect the vacuum pump, (if you want to add refrigerant gas see the next paragraph);

completely open the taps on 2 and 3 way valves (D);

Screw in the cap on the service outlet © and valves (E);

after having tightened the plugs, make sure there are no gas leaks with the appropriate detector. CAUTION: Always protect hoses and cables to prevent their being damaged, as once damaged can cause gas leaks (personal injury from frostbite).

4.9 Charge of the refrigerant gas (Fig. 11)

The product can be installed with refrigerant connection between internal and external unit up to 8 m. The warranty does not cover installation with refrigerant connection longer than 8 m. The declared performances are referred to refrigerant connection pipes of 6 m; different types of installation may lead to different values of performance. In case you are adding R134a gas in the circuit, will be needed: - R134a refrigerant tank. In this case it is necessary a charge attack 1/2 UNF 20 threads per inch and corresponding seal; - Electronic scale for refrigerant charging with sensitivity 10g. Dur ing installation

Through the installer menu activate the C2 (Charge), you have 30 minutes to perform the charge with the circuit in low pressure.

Carry out the procedure of paragraph 4

create a vacuum and check the seal” until the passage “f”;

Connect the manometer on the low pressure service valve , and connect the refrigerant cylinder to the center tap of the the manometer. Open the container of the refrigerant then open the main valve cap pressure gauge and adjust the needle valve until you hear the coolant leak, and release the pin and close the valve of the the pipe;

Keep under control the weight of the refrigerant tank through the electronic scale;

Open the ball valve and to flow the refrigerant gradually;

After reaching the mass of gas to be loaded close the tap; f) Remove the manometer and charging hose from the valve;

Fully open taps 2 and 3 way valves (D), turn the product in heat pump mode with the detector and check for leaks of refrigerant;

Remove the container from the manifold and replace all the plugs (E).

Connect the manometer on

the low pressure service valve, and connect the refrigerant cylinder to the center tap of the the manometer. Open the container of the refrigerant then open the main valve cap pressure gauge and adjust the needle valve until you hear the coolant leak, and release the pin and close the valve of the the pipe; b) Keep under control the weight of the refrigerant tank through the electronic scale; c) Open the ball valve and to flow the refrigerant gradually; d) After reaching the mass of gas to be loaded close the tap; e) Remove the manometer and charging hose from the valve; f) with the detector and check for leaks of refrigerant; g) Remove the container from the manifold and replace all the plugs (E). h) Once finished the time for the “Charge”, verify proper product functioning.Heat pump water heater – INSTALLATION

4.10 Hydraulic connections

Connect the water heater inlet and outlet to pipes or pipe fittings that can withstand the operating pressure and temperature of the hot water, which may reach 75 °C. It is not advisable to use materials that cannot withstand such temperatures. The dielectric union fitting (supplied with the product) must be applied to the hot water outlet pipe, prior to performing the connection. Screw a “T” fitting identified by a blue collar onto the appliance’s water inlet pipe. It is mandatory to fit a safety valve onto the appliance’s water inlet pipe. The device must comply with the EN 1487:2002 standard and must have a maximum pressure of

0.7 Mpa (7 bar). Moreover, it must at least include the following components: 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. The device’s relief outlet must be connected to a relief pipe with a diameter no less than that of the appliance’s connection (3/4”), with the aid of a siphon creating an air gap of at least 20 mm to allow for visual inspection; this is to prevent any harm to persons and animals or damage to objects should the device activate and for which the manufacturer shall not be held liable. Use a flexible pipe to connect the pressure safety device inlet to the cold water system pipe, using a cut-off valve if necessary. Additionally, a water discharge pipe must be fitted to the outlet in case the drainage tap is opened. Avoid overtightening the pressure safety device and do not tamper with it. It is normal for water to trickle from the pressure safety device during the heating phase; for this reason, it is necessary to connect the outlet, which must always be left exposed to the atmosphere, to a drainage pipe that slopes downwards and towards an area not subject to frost. It is advisable to also connect the condensate outlet to the same pipe, through the connection located on the lower side of the water heater. The appliance must not operate with water hardness levels below 12 °F; on the other hand, it is advisable to use a suitably calibrated and monitored water softener in the event of particularly hard water (>25 °F); in this event, the residual hardness must not fall below 15 °F. If the mains pressure is close to the calibrated valve values, a pressure reducer must be installed as far as possible from the appliance. FIG 12. Caption: A:hot water outlet pipe / B: cold water inlet pipe / C: safety assembly / D: interception tap / E: dielectric connection. WARNING! It is advisable to carefully wash the system’s pipes in order to remove any residues of screw thread, welding or dirt which may hamper the correct operation of the appliance.

4.11 Electrical connections

Shielded probe connection cable between units cable supplied 4G

The batteries ensure that the product is protected against corrosion, when the appliance is not powered. It is advisable to carry out a check on the electrical system to verify 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. It is forbidden to use multiple outlet sockets, extension cables or adaptors. The earth connection of the appliance is required. 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 anomalies in the electric power supply. To disconnect the appliance from the mains, use a bipolar switch complying with all applicable IEC-EN regulations in force (minimum distance between contacts 3 mm, switch preferably equipped with fuses). The appliance must comply with the European and national standards, and must be protected by a 30 mA RCD.Heat pump water heater – INSTALLATION

WARNING connecting cables between the two units should not go near electrical boxes, data transmission systems and wireless (wi-fi router) or in close proximity to other cables. To perform electrical connections refer to fig. 4 PERMANENT ELECTRICAL CONNECTION (24h/24h)

Fig. 13 Use this configuration whenever users do not have a two-tier electricity rate. The water heater will always be connected to the power supply network to ensure 24 h operation.

ELECTRICAL CONNECTION WITH TWO

Fig. 14 If users have a two-tier electricity rate and a suitable meter, the product may be powered only while the lowest rate applies. During the period in which the appliance is not powered, protection against corrosion through the impressed current anode is ensured by the rechargeable batteries.

Fig. 15 Offers the same cost advantages compared to the two-tier rate configuration but, additionally, it allows for obtaining rapid heating thanks to the BOOST mode that activates heating even with the HP rate.

1) Connect a bipolar cable to the appropriate signal contacts on the meter.

2) Connect the signal bipolar cable to the indicated terminal which is located inside the product, close to

the supply terminal.

WARNING: the signal cable must be inserted in the hole beneath the power supply cable then anchored

with suitable cable clips located inside the product, along the same route of the power supply cable, and tightened in the cable glands near the appropriate terminal; make a suitably-sized hole in the rubber rings for the passage of the cable.

3) Activate the HC-HP function through the installer menu (see Paragraph 7.6).

Once the appliance is connected to the hydraulic and electric systems, the water heater must be filled with water from the domestic water supply network. In order to fill the water heater, it is necessary to open the central tap of the domestic network supply and the nearest hot water tap, while making sure that all the air in the tank is gradually expelled. Visually inspect for possible water leaks from the flange and pipe fittings and gently tighten them, if necessary. Remove the tab from the batteries, the battery housing is located beneath the frames indicated in pictures nr. 1 and 2.Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS

6.1 Initial start-up

WARNING! The installation and initial start-up of the appliance must be performed by qualified personnel in compliance with the national regulations in force regarding installation, and in conformity with any regulations issued by local authorities and public health bodies. If the water heater to be installed not only replaces an existing appliance, but is part of a broader renovation project of the existing hydraulic system or part of a new hydraulic system, the company installing the water heater must issue the customer a declaration of conformity to the laws and regulations in force, once installation is completed. In both cases, the company installing the water heater must carry out the safety and operational checks on the entire system. Before starting up the water heater, verify whether the installer has completed all the relative installation operations. Make sure to have clearly understood the installer’s indications on how to operate the water heater and perform the main operations on the appliance. The heat pump requires 5 minutes to become fully operational when starting it for the first time.

In the event of a malfunction and/or faulty operation, turn the appliance off and do not attempt any repairs, but contact qualified personnel. Only original spare parts must be used and any repairs must be carried out exclusively by qualified personnel. Failure to comply with the above-mentioned recommendations may 40isualize40 the appliance’s safety and void the manufacturer’s liability. In the event of prolonged inactivity of the water heater, it is advisable to carry out the following: - Disconnect the appliance from the power supply or, if a switch is mounted upstream from the appliance, turn the switch itself to the “OFF” position. - Close all taps of the domestic water supply system. WARNING! It is advisable to drain the appliance whenever it is left inactive in a room subject to frost. This operation must be carried out by qualified personnel only. WARNING! Hot water at temperatures above 50 °C running from taps may immediately cause serious burns. Children, the disabled and the elderly run a greater risk in this regard. Therefore, it is advisable to use a thermostatic mixing valve connected to the appliance’s water outlet pipe, which is identified by a red collar.

6.3 Safety regulations

Refer to paragraph 1.1 for the description of the symbols used in the table below. Ref.

Do not perform operations that involve removing the appliance from its housing. Electrocution due to exposure to live components.

Flooding caused by water leaking from disconnected piping.

Do not leave objects lying on the appliance. Personal in jury caused by the object falling off the appliance as a result of vibrations.

Damage to the appliance or any underlying items caused by the object falling off as a result of vibrations.

3 Do not climb onto the appliance. Personal injury caused by the appliance falling down.

Damage to the appliance or any underlying objects caused by the appliance detaching from its fixing brackets and falling.Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS

Do not perform any operations that involve opening the appliance. Electrocution due to exposure

Personal injury caused by burns due to overheated components, or wounds caused by sharp edges or protrusions.

5 Do not damage the power supply cable. Electrocution from non-insulated live wires.

Do not climb onto chairs, stool s, ladders or unstable supports to clean the appliance.

Personal injury caused by falling from a height or cuts (stepladders shutting accidentally).

Do not attempt to clean the appliance without first switching it off, removing the plug or turning the external switch to the OFF position.

Electrocution due to exposure to live components.

Do not use the appliance for any purpose other than normal household operation.

Damage to the appliance caused by operation overload. Damage to objects caused by improper use.

Do not allow children or inexperienced persons to operate the appliance.

Damage to the appliance caused by improper use.

Do not use insecticides, solvents or aggressive detergents to clean the appliance.

Damage to plastic or painted parts.

Avoid placing any objects and/or appliance beneath the water heater

Damage due to possible water leakage.

12 Do not drink the water of condensation Injury from positioning

Refer to Fig. 16. The control panel, constructed in a simple and rational way, comprises two buttons and a central knob. In the upper section, a DISPLAY shows the set temperature or the detected temperature, besides other specific indications such as the operation mode signal, fault codes, settings and information of the product’s condition. The SMILE LED is positioned below the control and 41isualize zones: it signals the operating status of water heating in the heat pump or heating element.

7.2 Turning the water heater on/off

Turning the appliance on: simply press the ON/OFF button to turn the water heater on.

The DISPLAY 41isualize41 the “set” temperature and operation mode, while the HP symbol and/or heating element symbol indicate the operation of the heat pump and/or heating element respectively. Turning the appliance off: simply press the ON/OFF button to turn the water heater off. The “SMILE LED” turns off, as does the DISPLAY light and other previously active signals; only “OFF” appears on the display. The protection against corrosion is still ensured, while the product will automatically ensure that the temperature of the water in the tank does not fall below 5°C.Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS

The desired temperature for the hot water can be set by turning the knob clockwise or anti-clockwise (the 42isualize42 temperature will flash temporarily). To 42isualize the current temperature of the water in the tank, press and release the knob; the relative value will appear for 8 seconds then the set temperature will reappear once again. The temperatures that can be obtained in the heat pump mode vary between 50 °C and 55 °C, by factory default setting. By accessing the installer menu (illustrated in Paragraph 7.7), the interval range can be extended to between 40 °C and 62 °C (bear in mind that temperatures exceeding 55 °C in the heat pump mode may lead to greater wear of the compressor). The maximum temperature that can be obtained with the heating element is 65 °C, by factory default setting, and 75 °C, by varying the setting on the installer menu.

7.4 Mode of operation

In normal operating conditions, the “mode” button can be used to vary the operating mode through which the water heater reaches the set temperature. The selected mode will be 42isualize42 on the line below the temperature. If the heat pump is active, the following symbol will appear:

If the heating element is active, the following symbol will appear:

• AUTO: the water heater understands how to reach the desired temperature in a few hours, through the rational use of the heat pump and, only if necessary, of the heating element. The maximum number of hours it takes depends on the P9 – TIME_W parameter (see Paragraph 7.7), which is set to 8 hours by default. (recommended for winter to ensure the better comfort).

• BOOST: by activating this mode, the water heater simultaneously uses the heat pump and heating element to reach the desired temperature in the shortest possible time. Once this temperature is reached, the AUTO operating mode is restored.

• BOOST 2 (to be activated through the installer menu): Compared to Boost, the Boost2 mode remains active even after the set temperature is reached.

• GREEN: the water heater will use the heat pump, thereby ensuring maximum energy saving! The maximum temperature that can be reached depends on the value of the P3 parameter (51 °C-62 °C) – refer to Paragraph 7.7. The heating element may turn on only in the event that occurs inhibition of operation of the heat pump (errors, air temperature out of operating range, defrosting process in progress, anti-legionnaire’s disease). This function is recommended for air temperatures above 0 °C during the hours of heating.

• PROGRAM (to be activated through the installer menu): You have two programs P1 and P2, which may act either individually or in combination with each other during the day (P1 + P2). The device will be able to activate the heating phase to reach the selected temperature set in the timetable, giving priority to heating by heat pump and, if necessary, through the heating elements. Press the mode button to select the desired Program mode, turn the knob to set the desired temperature, press it again to confirm, turn the knob to set the desired time and press to confirm; mode P1 + P2 can set the information for both programs. In the case of electrical connection with two-tier price signal HC / HP, you still possible program the water heater at any time of day. For this function is required the setting of the current time, see the next paragraph. Note: To ensure comfort, in the case of P1 + P2 mode operation with very close times between them, it is possible that the temperature of water is higher than the temperature set, in which case it may appear the symbol of the waves.

• VOYAGE (to be activated through the installer menu): studied for situations in which users are absent from the appliance’s operating location; this mode allows for programming the number of days of absence, during which the water heater will remain turned off. The appliance will activate only to supply hot water on the day of arrival; protection against corrosion will continue to be guaranteed while the product will automatically ensure that the temperature of the water in the tank does not fall below 5 °C. Press the “mode” button until selecting the VOYAGE mode, turn the knob to set the number of days (“days”) then press the knob to confirm. The display will only 42isualize the number of days that remain until the product’s reactivation. In the event of an electric connection with a day/night contactor or with HC-HP signal, the number of nights of absence must be specified, taking into account that the product only operates during the night.Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS

For example, when leaving home on a Saturday morning to return on the Sunday of the successive week, on Saturday morning it will be necessary to programme 7 nights of absence so as to have hot water available upon returning home on Sunday. To stop this function press the button “mode”.

The time setting is required if:

• Program mode has been enabled by the installer menu (P11 parameter set to ON, see

• The Program is activated and occur simultaneously absence of power from the mains and battery (the product will restart in Auto mode). You can also change the current time through the parameter L0 (paragraph 7.6). The display flashes up showing hours and minutes. Turn the knob until you find the current time and confirm by pressing the knob. Repeat the procedure to set the minutes.

The information menu allows for 43isualize4343 data for monitoring the product. To enter the menu, press the relative knob and hold for 5 seconds. Turn the knob to select the parameters L1, L2, L3 … L14. The description of the parameter appears on the line below. Upon reaching the desired parameter, press the knob to 43isualize its value. Press the knob or “MODE” button to return to the parameter selection area once again. To exit the information menu, press the “mode” button (the appliance will ensure that the menu is automatically exited after the latter has been idle for 10 minutes). Parameter

L0 TIME Visualization and setting of the current time (changeable parameter, available only if “Program” mode is activated).

Activated/deactivated st atus of the two

tier rate operation mode.

Maximum accepted hours of powering.

Activated/deactivated status of the anti

legionnaire’s disease function (on/off).

set temperature of the pump assembly.

Tempe rature recorded by the heating element unit sensor 1.

Temperature recorded by the heating element unit sensor 2.

Temperature recorded by the hot water pipe sensor.

Temperature recorded by the inlet air sensor.

Temperat ure recorded by the evaporator sensor.

Activated/deactivated status of the defrost function (on/off).

To exit the installer menu, press the “mode” button (the appliance will ensure that the menu is automatically exited after the latter has been idle for 10 minutes). Parameter

T Max Adjustment of the maximum o btainable temperature (from 65

A higher temperature value allows for using a greater amount of hot water. P2 T Min Adjustment of the minimum obtainable temperature (from 50 °C to 40 °C). A lower temperature setting allows for more energy-efficient operation in the event of limited hot water consumption. P3 T HP Adjustment of the maximum temperature obtainable with the heat pump unit (from 50

°C). Bear in mind that operating at temperatures above 55 °C with the heat pump may lead to greater wear of the compressor. P4 GREEN Activation/deactivation of the Green function (on/off).

Acti vation/deactivation of the anti

legionnaire’s disease function (on/off).

See Paragraph 7.9. P6 VOYAGE Activation/deactiva tion of the Voyage function (on/off).

See Paragraph 7.4. P7 DEFROS Activation/deactivation of the defrost mode (on/off).

If activated, this mode allows the heat pump to function at air temperatures as low as -5 °C. P8 HC-HP Activation/deactivation of th e two

tier rate operation mode

with HC HP signal (Warning: activate it only if signal cable HC-HP is connected). See Paragraph 7.11.

Maximum number of hours of daily heating (from 5h to 24h).

Resetting of all factory default settings. P11

Activation/deactivation of the

Program function : P1, P2, P1+P2 (on/off).

Activation/deactivation of the Boost2 function (on/off).

electric connection check (activate this only in presence of mains alimenta tion and air temperature below 30 °C). C2 CHARGE Activation of the cycle inversion procedure, to allow the gas charging (see paragraph 4.9) (activate this only in presence of mains alimentation).Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS

7.8 Electrical connections "Check" (function activated by the installer menu)

With this function you can control the electrical connections made during installation. You can start the procedure from the installer menu, setting the parameter C1 ON and confirm by pressing the knob. The procedure takes about 8 minutes during which the progress symbols flashes on the display. To stop this procedure press "mode ". If at the end of the procedure has the response "OK", the electrical connections were made properly. If the response is "KO " recheck the electrical connections between indoor and outdoor units paying attention to the numbers indicated on the terminals. Check probes cable.

legionnaire’s disease protection function. The water is brought to a temperature of 65 °C on a monthly basis and for a maximum time of 15 minutes, so as to avoid germs from developing in the water tank and piping (provided the water has not been brought to T>57 °C at least once for at least 15 minutes). The first heating cycle is performed 3 days after the function has been activated. As these temperatures may cause burns, it is advisable to use a thermostatic mixer. The achievement of temperatures above the set is marked with the symbol of the waves. During the cycle of antilegionella will be displayed “ANTI_B” alternately to the mode of operation, once the cycle is done the set temperature remains the original one. In the event that is enabled the two-tier rate signal HC-HP, the function will take place during the economic tariff. To stop press "on/off".

7.10 Default settings

The appliance is manufactured with a series of default modes, functions or values, as indicated in the table below: Parameter

P7 DEFROST (active defrost activation) ACTIVATED P8 HC-HP (two-tier rate operation mode) DEACTIVATED P9 TIME_W (no. of accepted hours of powering) 8 h P11

7.11 Operation with two-tier electricity rate

To be able to operate also on appliances with a two-tier rate system, the control logic calculates the number of average hours a day during which the power supply is available in the economy mode (HC). A self-learning function ensures that the appliance reaches the pre-set temperature in the time range during which the economy rate applies; the maximum limit of hours is determined by the P9 TIME_W parameter; after the initial start-up (or after switching off the hardware), the default setting is 8 hours.Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS

In any event, if the temperature of the water in the tank falls below 5 °C while the appliance is powered, the heating element (1000 W) will be automatically activated to heat the water up to 16 °C.

As soon as a fault occurs, the appliance enters into the fault mode while the display emits flashing signals and visualises the error code. The water heater will continue supplying hot water provided the fault affects only one of two the heating units, by activating the heat pump or heating element. If the fault involves the heat pump, the symbol "HP" will flash on the screen, while the heating element symbol will flash if the fault involves this component. If both components are affected, both symbols will flash. Error code Cause Heating element operation Heat pump operation What to do

Heating occurs without any water in the water tank OFF OFF Turn off the appliance. Verify the causes of the lack of water (leakage, faulty hydraulic connections, etc.)

Excessive temperature of the water in the tank OFF OFF Turn the

appliance off then wait until the water temperature decreases; if the problem persists, contact the technical assistance service E4 Sensor fault – heating element zone OFF OFF Check or replace the heating element zone sensors, if necessary

Excessive difference between the temperatures of the heating element zone sensors OFF OFF Check or replace the sensors, if necessary H2 Circuit in low pressure or fan fault ON OFF Turn off the appliance

Check that the fan is not broken and that the evaporator is not obstructed. Check whether the hot gas valve functions properly and replace it if necessary. Check the evaporator sensor. H3 Compressor fault or gas leak ON OFF Turn off the appliance. Check that the evaporator is not obstructed. Verify whether the wirings and the compressor functions properly and/or check for any refrigerant gas leakages. Check or replace the evaporator sensor. H4 Evaporator obstructed ON ON Turn off the appliance. Check that the evaporator and the external unit casing is not obstructed. H5 Fan fault ON OFF Turn off the appliance. Verify that there are no physical impediments to the movement of fan blades, check the wiring of connection with circuit boards. Check the evaporator sensor. H6 Air sensor fault ON OFF Check the proper co nnection of the probe cable between the two units, Verify whether the sensor is properly connected and positioned, and replace it if necessary. H7 Evaporator sensor fault ON OFF Check the proper connection of the probe cable between the two units, Verify whether the sensor is properly connected and positioned, and replace it if necessary. H8 Hot water sensor fault ON OFF Verify whether the sensor is properly connected and positioned, and replace it if necessary H9 Active defrost fault ON OFF

(if air temperature il below 5°C) Check that the fan is not broken and that the evaporator is not obstructed. Check whether the hot gas valve functions properly and replace it if necessary. Check that the external unit casing is not obstructed. F1 PCB fault OFF OFF Try turning the appliance off then on again and verify the operation of the control boards, if necessary replace it.

Excessive number of ON/OFF (RELEASE) OFF OFF Temporarily disconnect the product mains and the batteries.

WARNING! Obse rve the general warnings and safety instructions listed in the previous paragraphs and strictly adhere to the indications therein contained. All maintenance operations and interventions should be performed by qualified personnel (i.e. with the necessary requirements as outlined in the applicable norms in force).

8.1 Draining the appliance

The appliance must be drained if left inactive in a room subject to frost. When necessary, empty the appliance as follows: - Disconnect the appliance from the mains. - Close the shut-off valve, if installed, or the central tap of the domestic water supply network. - Open the hot water tap (washbasin or bathtub). - Open the tap located on the safety valve.

8.2 Routine maintenance

It is advisable to clean the evaporator on an annual basis in order to remove any dust or obstructions. To access the evaporator, placed on the external unit, it is necessary to remove the fixing screws of the grid casing; clean the evaporator with a flexible brush taking care not damage it. In the case you found some bended fins, straighten them with a special comb, according to the fins spacing (1.6 mm). Still on external unit, ensure that the condensate water runs out in a suitable drain and make sure the discharge is made without hindrance. Use only original spare parts.

Water comes out cold or insufficiently warm Low temperature set

Increase the temperature set for the outlet water

Device functioning errors Check for errors on the display an d act in the wa y specified on the chart "Faults" No electrical connection, disconnected or damaged wirings Check the voltage at the supply terminals, verify the integrity and connections of the cables. Absence of HC/HP signal (if the product is installed with the HC/HP signal cable) Try to put the product in “Boost” mode, if is ok in this way, check the connection of the meter, check the integrity of the HC/HP cable. Malfunctioning of the timer for two

tier rate (if the product is installed in this configuration) Check the operation of the contactor day / night and that the set time is enough to heat water Funcioning in “Voyage” mode verify is not the programming period "Voyage", in that case deactivate the function Product off Check availability of electricity, turn on the product Usage of a large amount of hot water when the product is heating up phase Probe error

Control the presence, even if occasional E5

The water is boiling (with the possible presence of steam from the taps) High level of scaling of the boiler and components Turn off the power, drain the unit, remove the sheath of the resistance and remove lime scale inside the boiler, be careful not to damage the enamel of the boiler and the sheath resistance. Repackage the product as in the original configuration, it is recommended to replace the flange gasket. Probe error

Control the presence, even if occasional E5

Reduced functioning of the heat pump, semi- permanent operation of the electrical resistance Air temperature out of rang

Depending from the climatic conditions

“Time W” value too low

temperature or a longer

Installati on done not in accordance with e lectric voltage (too low) Provide a proper Electric voltage Evaporator clogge d or frozen

Problems with the heat pump circuit

Make sure that there are no errors on the display

Are not yet past 8 days by:

Insufficient flow of hot water Leaks or obstructions by the water circuit Verify that there are no leaks along the circuit, ch eck

the integrity of the the deflector pipe the integrity of incoming cold water pipe and hot water pipe Overflowing water by the the safety valve A drip of water by the device should be considered normal during the heating If you want to avoid the drip,

install an expansion vessel on the plant supply. If leakage continues during the period of no heating, check the calibration of the device and the pressure of the water network. Caution: Do not obstruct the hole for evacuation of the device! Increase of the noise of the outdoor unit (heat pump) Presence of obstructive elements inside Check the components in movement, clean the fan and the other parts who can generate noise or vibrations Components vibration Check the components fixed with screws, be s ure that the screws are tight. Problems of visualization or display off Damage or disconnection of the wiring connecting electronic board and interface board Check the integrity of the connection, check the operation of electronic boards No power from mains in absence of batteries or exhausted batteries. Check if there is electric mains supply and check the conditions of the batteries Bad odor coming from the the product Absence of a siphon or siphon empty Provide a siphon, with the proper quantity of water. Abnormal or excessive consumption than expected Loss or partial obstruction of the gas refrigerant circuit Visually ve rify that the connecting pipes and taps aren’t

Start the product in heat pump mode, use a for R134a leak detector to check for leaks Bad environmental conditions or

installation Partially clogged evaporator

Incorrect installation

Contact the technical support

8.4 Routine maintenance performed by users

It is advisable to rinse out the appliance after each routine or extraordinary maintenance intervention. The pressure safety device must be operated regularly to verify that it is not clogged and to remove any limescale deposits. Check that the condensate drainage pipe is not obstructed. The batteries must be replaced every 2 years or in case of losses. Make sure that they are correctly disposed of and exclusively replace them with 3 AA-type rechargeable batteries (minimum 2100 mAh); observe the polarities as illustrated in the battery housing. The battery housing is located beneath the frame, to the right of the interface – refer to the picture 1 and 2. The appliance should be unplugged when you remove the batteries.

8.5 Water heater disposal

The appliance contains R134a-type refrigerant gas which must not be released into the atmosphere. In case of permanent decommissioning of the water heater, ensure that disposal procedures are carried out by qualified personnel only. This product conforms to EU Directive 2002/96/EC. The barred dustbin symbol appearing on the appliance’s data plate indicates that the product must be disposed of separately from household waste once it reaches the end of its lifespan, and transferred to a waste disposal site for electric and electronic equipment, or returned to the dealer when purchasing a new appliance of the same kind. The user is responsible for delivering the decommissioned appliance to a suitable waste disposal site. Proper separated collection of the decommissioned appliance and its successive eco-compatible recycling, treatment and disposal contributes to preventing negative effects on the environment and health and favours the reuse of the materials comprising the product. For further details on the available waste collection systems, contact your local waste disposal office, or the dealer from which the product was purchased. This appliance includes rechargeable batteries: these must be removed before disposing of the appliance and placed in specific disposal containers. The batteries are located in figures 1 and 2.49

/uitschakeling Green functie (on/off).

/uitschakeling Voyage functie (on/off).

/uitschakeling ontdooi functie (on/off).

P1, P 2, P1+P2 (on/off).

/uitschakeling Boost2 functie (on/off).