Installation 3. Installation 3.1 Preliminary warnings i The appliance must be installed exclusively by the Technical Service or by professionally qualified personnel who MUST wear adequate accident-prevention protective equipment. The outdoor unit uses a HFC R-32 (GWP 675) type eco-friendly liquid refrigerant, which does not deplete the ozone layer. Make sure that all the materials used for maintenance and for filling the components can be used with the R-32 refrigerant. (*) Global warming potential Refrigerant GWP (*) R-32 675 This unit is charged in the factory with the quantity of refrigerant shown on the data plate and, depending on the length of the pipes, for certain systems it may be necessary to charge an additional quantity. If the circuit must be filled after maintenance or repairs, see the information appearing in this manual. The appliance must be filled with the refrigerant specified, namely R-32. a To prevent damages to the compressor, do not fill the circuit with a quantity of refrigerant exceeding the amount specified by the manufacturer. The canisters containing the R-32 refrigerant are equipped with a dip tube which allows liquid to flow out only when placed in a vertical position with the valve on top. The R-32 refrigerant, as occurs with all HFC refrigerants, is compatible only with oils recommended by the compressor manufacturer. POE-type oils rapidly absorb moisture. Do not expose the oil to the air. a a Never open the appliance when it is under a vacuum. Do not disperse the R-32 refrigerant into the environment. a – Ensure that all applicable national safety standards are observed throughout the course of the installation. – Ensure that the system is adequately earthed. – Ensure that the power supply voltage and frequency match those required by the outdoor unit, and that the installed power is sufficient for its operation. – Ensure that the power circuit impedance matches the electrical power absorbed by the outdoor unit, as shown on the rating plate of the outdoor unit (EN 61000-3-12). – Ensure that residual-current devices and safety switches are adequately sized and connected to the outdoor and indoor units. Never use equipment other than that recommended by the manufacturer to speed up defrosting or for cleaning purposes. The appliances must be stored in a room without ignition sources operating continuously (for example: open flames, a running gas-fired device or a running electric heater). During tests, never raise the appliance’s pressure beyond the level recommended by the manufacturer. a a In the event of refrigerant leakages, immediately ventilate the area. Do not perforate or give fire to the appliance. Potential risks linked to refrigerant leakages: – Reduction of the oxygen in the installation zone – If the R-32 refrigerant comes into contact with flames, it can generate toxic gases. The pipes must be kept as short as possible to reduce load losses. The pipes must be installed in such a way that they are protected against accidental damages during operations and/or maintenance. Install vibration-dampers to prevent vibrations or excessively pulsating effects on piping. The protection devices, pipes and couplings must be protected against environmental effects (for example, freezing of the water in discharge pipes). The joints made on the refrigeration circuit’s pipes must be subjected to a tightness test in accordance with the regulations on fluorinated gases. 16 / EN

3.2 Receiving the product The NIMBUS PLUS S NET R32 system is supplied in multiple items protected by a cardboard pack: 1 outdoor unit 2 indoor unit The following material is supplied in a plastic bag contained in the packaging: – Instruction manual – Warranty certificate – Energy label Remove the packaging taking care not to damage the appliance. 1 Outdoor unit i i i Installation Upon receiving the product, make sure that its contents are intact and complete and, if they do not match the order, contact the branch that sold the appliance. IT IS FORBIDDEN to disperse the packaging material in the environment or leave it within reach of children, as it may be potentially dangerous. The appliance must be lifted exclusively using suitable lifting equipment, such as, for example, hoists or forklift trucks with adequate load-bearing capacity in relation to the weight to be lifted. 3.3 Installing the outdoor unit 3.3.1 Place of installation 1 Packaging label 2 Indoor unit 1 1 Fig. 20 – Install the outdoor unit outdoors only. – Avoid positioning the outdoor unit in places which are difficult to access for subsequent installation and maintenance operations. – Avoid positioning the units close to heat sources. – Do not position the outdoor unit in places subject to continuous vibrations. – Do not position the outdoor unit on load-bearing structures that are not designed to withstand its weight. – Avoid positioning the appliance close to combustible gas tanks or pipes. – Avoid positions exposed to oil vapours. – Choose a position where the noise and air emitted by the outdoor unit will not disturb the neighbours. – Choose a position sheltered from wind. – Choose a position that guarantees the necessary installation distances. – Avoid positioning the appliance in a spot preventing access to doors and/or corridors. – The floor supporting the appliance must be able to sustain the outdoor unit’s weight and minimise all possible vibrations. – If the outdoor unit is installed in a location normally subject to heavy snowfall, it must be positioned at least 200 mm above the usual level of snowfall, or else an adequate supporting structure must be mounted. 1 Packaging label Fig. 21 17 / EN

Installation 3. Installation 3.1 Preliminary warnings i The appliance must be installed exclusively by the Technical Service or by professionally qualified personnel who MUST wear adequate accident-prevention protective equipment. The outdoor unit uses a HFC R-32 (GWP 675) type eco-friendly liquid refrigerant, which does not deplete the ozone layer. Make sure that all the materials used for maintenance and for filling the components can be used with the R-32 refrigerant. (*) Global warming potential Refrigerant GWP (*) R-32 675 This unit is charged in the factory with the quantity of refrigerant shown on the data plate and, depending on the length of the pipes, for certain systems it may be necessary to charge an additional quantity. If the circuit must be filled after maintenance or repairs, see the information appearing in this manual. The appliance must be filled with the refrigerant specified, namely R-32. a To prevent damages to the compressor, do not fill the circuit with a quantity of refrigerant exceeding the amount specified by the manufacturer. The canisters containing the R-32 refrigerant are equipped with a dip tube which allows liquid to flow out only when placed in a vertical position with the valve on top. The R-32 refrigerant, as occurs with all HFC refrigerants, is compatible only with oils recommended by the compressor manufacturer. POE-type oils rapidly absorb moisture. Do not expose the oil to the air. a a Never open the appliance when it is under a vacuum. Do not disperse the R-32 refrigerant into the environment. a – Ensure that all applicable national safety standards are observed throughout the course of the installation. – Ensure that the system is adequately earthed. – Ensure that the power supply voltage and frequency match those required by the outdoor unit, and that the installed power is sufficient for its operation. – Ensure that the power circuit impedance matches the electrical power absorbed by the outdoor unit, as shown on the rating plate of the outdoor unit (EN 61000-3-12). – Ensure that residual-current devices and safety switches are adequately sized and connected to the outdoor and indoor units. Never use equipment other than that recommended by the manufacturer to speed up defrosting or for cleaning purposes. The appliances must be stored in a room without ignition sources operating continuously (for example: open flames, a running gas-fired device or a running electric heater). During tests, never raise the appliance’s pressure beyond the level recommended by the manufacturer. a a In the event of refrigerant leakages, immediately ventilate the area. Do not perforate or give fire to the appliance. Potential risks linked to refrigerant leakages: – Reduction of the oxygen in the installation zone – If the R-32 refrigerant comes into contact with flames, it can generate toxic gases. The pipes must be kept as short as possible to reduce load losses. The pipes must be installed in such a way that they are protected against accidental damages during operations and/or maintenance. Install vibration-dampers to prevent vibrations or excessively pulsating effects on piping. The protection devices, pipes and couplings must be protected against environmental effects (for example, freezing of the water in discharge pipes). The joints made on the refrigeration circuit’s pipes must be subjected to a tightness test in accordance with the regulations on fluorinated gases. 16 / EN

3.2 Receiving the product The NIMBUS PLUS S NET R32 system is supplied in multiple items protected by a cardboard pack: 1 outdoor unit 2 indoor unit The following material is supplied in a plastic bag contained in the packaging: – Instruction manual – Warranty certificate – Energy label Remove the packaging taking care not to damage the appliance. 1 Outdoor unit i i i Installation Upon receiving the product, make sure that its contents are intact and complete and, if they do not match the order, contact the branch that sold the appliance. IT IS FORBIDDEN to disperse the packaging material in the environment or leave it within reach of children, as it may be potentially dangerous. The appliance must be lifted exclusively using suitable lifting equipment, such as, for example, hoists or forklift trucks with adequate load-bearing capacity in relation to the weight to be lifted. 3.3 Installing the outdoor unit 3.3.1 Place of installation 1 Packaging label 2 Indoor unit 1 1 Fig. 20 – Install the outdoor unit outdoors only. – Avoid positioning the outdoor unit in places which are difficult to access for subsequent installation and maintenance operations. – Avoid positioning the units close to heat sources. – Do not position the outdoor unit in places subject to continuous vibrations. – Do not position the outdoor unit on load-bearing structures that are not designed to withstand its weight. – Avoid positioning the appliance close to combustible gas tanks or pipes. – Avoid positions exposed to oil vapours. – Choose a position where the noise and air emitted by the outdoor unit will not disturb the neighbours. – Choose a position sheltered from wind. – Choose a position that guarantees the necessary installation distances. – Avoid positioning the appliance in a spot preventing access to doors and/or corridors. – The floor supporting the appliance must be able to sustain the outdoor unit’s weight and minimise all possible vibrations. – If the outdoor unit is installed in a location normally subject to heavy snowfall, it must be positioned at least 200 mm above the usual level of snowfall, or else an adequate supporting structure must be mounted. 1 Packaging label Fig. 21 17 / EN