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NUOS Plus - User Manual

  • Text
  • Appliance
  • Heater
  • Heating
  • Installation
  • Operating
  • Discharge
  • Maintenance
  • Electrical
  • Technical
  • Regulations
  • Nuos
  • Manual

Heat pump water heater

Heat pump water heater – GENERAL INFORMATION 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! The appliance should be handled and stored in a vertical position. The product may be handled in a horizontal position only for short distances, while resting on the rear end indicated; in this case, wait at least 3 hours before starting the appliance once it has been correctly repositioned in a vertical position and/or installed; this is to ensure that the lubricating oil inside the refrigeration circuit is suitably distributed and to avoid damages to the compressor. The packaged appliance may be handled either manually or with the aid of a forklift truck, while ensuring that the above indications are observed. It is advisable to keep the appliance in its original packaging until installing it in its chosen location, particularly when construction work is under way on-site. Upon removing the packaging, check whether the appliance is intact and that no parts are missing. In the event of defects or missing components, notify the dealer within the time limits specified by 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 and ensure that all water has been drained from the tank. Should the original packaging be missing, provide an adequate protection for the appliance to prevent any damages, for which the manufacturer shall not be held liable. Allowed positions for transportation Non-allowed positions 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. A B C D E F G H I L M N Model Tank capacity Serial no. Power supply voltage. frequency. maximum absorbed power Max./min. pressure of the refrigeration circuit Tank protection Absorbed power – heating element mode Marks and symbols Max./min. power in heat pump mode Type of refrigerant and charge Maximum tank pressure Product weight 2. TECHNICAL FEATURES 2.1 Operating principle 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 extract from the free sour 5

2.2 Construction features 1 Fan 12 Heat pump water heater – GENERAL INFORMATION Top NTC temperature probe (hot water) 2 Hot gas valve 13 Hermetic rotary compressor 3 Safety pressure switch 14 Lateral connections 4 Electronic expansion valve 15 Pressure transducer 5 Evaporator inlet NTC temperature probe 16 Low pressure outlet 6 Electronic box 17 Air NTC temperature probe 7 Bottom NTC temperature probe (heating element zone) 8 Electric heating element 19 Evaporator filter 9 MG Anode 20 Evaporator 18 Compressor suction NTC temperature probe 10 Condensate drain pipe 21 Thermostat (only 250L) 11 Middle NTC temperature probe 22 T&P valve 2.3 Overall dimensions. A Inlet cold water ¾” pipe B Outlet hot water ¾” pipe C Condensate drainage connection D Auxiliary circuit ¾” inlet pipe (250I version only) E Auxiliary circuit ¾” outlet pipe (250I version only) F Sheath for bottom probe (S2) (250I version only) 2.4 Electrical diagram 1 Power supply (220-230V 50Hz) 12 Electric heating element (1500 + 1000 W) 2 Mainboard (motherboard) 13 Bottom NTC temperature probe (heating element zone) 3 Interface board (display or HMI) 14 Middle NTC temperature probe 4 Connection board 15 Top NTC temperature probe (hot water) 5 Hermetic rotary compressor 16 Safety pressure switch 6 Operation condenser (15µF 450V) 17 Batteries (4x1,2V AA rechargeble) 7 Hot gas valve 18 Electronic expansion valve 8 Fan 19 Filter 9 Earth pole 20 HC-HP signal (EDF) - cable not supplied with the product 10 Pressure transducer 21 PV/SG signal - cable not supplied with the product 11 Air/Evaporator/Suction NTC temperature probes 22 AUX signal - cable not supplied with the product 6

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