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Ariston NUOS FIRST standing


The heat pump water heaters Ariston NUOS FIRST standing provide domestic hot water by a heat pump that heats a kettle, with a monobloc system.

The heat pump mainly uses the outside air as a renewable energy source to achieve maximum energy efficiency and high energy savings.

Ariston NUOS FIRST stand is available in 200 and 240 liters of volume of the kettle and the main features are:

  • eligible outside air temperatures from -5 to 42 ° C
  • Ecological gas R134A to heat water up to 62 ° C
  • Model 240 (SYS) with coil for integration with solar thermal or boilers, …
  • Low noise fan
  • Additional electric heater
  • LCD display

Operating mode: green, car, boost

The operation of the heat pump water heaters Ariston NUOS FIRST standing is based on the thermodynamic cycle of the heat pumps which allows to heat the hot water stored in the tank through the energy of the outside air is sucked from the ducted pipe or directly from the local.

The ecological gas R134A, using status changes due to compression and expansion cycles, draws its energy from the outdoor air and transfers it to the sanitary water stored in the tank.

The electrical energy required by the water heater in the heat pump is only that required to operate the fan and one for powering the compressor (which allows the movement of gas R134A). In case of need the electrical heater is activated which ensures the production of hot water. The main features are:

  • Ecological gas R134A order to heat the sanitary water up to 62 ° C only with the use of the heat pump
  • Eligible outside air temperatures from -5 to 42 ° C
  • COP EN 16147 = 2,41  200; 2.64 mod. 240-240 (SYS)
  • Electrical power consumption mean = 500 W
  • Compact product by weight = 87 kg mod. 200; 92 kg mod. 240; 107 kg mod. 240 (SYS)
  • DHW capacity suitable for a substitution of an existing traditional electric kettle
  • Low noise thanks to Silent – 53 db (A) function
  • Kettle enameled steel with active anode and magnesium anode
  • Exchanger wound on the outside of the tank (not immersed in healthcare)
  • Immersion heater 2000W
  • Model 240 (SYS) with coil dipped from 0.65 sq.m.
  • LCD display

Operation: green, car, boost and ability to time programming and sampling and legionella function



Dati tecnici

Taglia 200 240 240 (SYS)
N. indicativo persone 3-5 4-6 4-6
Tipo di installazione basamento
Tipo di prodotto Monoblocco
Capacità accumulo 200 litri 242 litri 238 litri
Dimensioni 1706 x 584 x 614 mm 1926 x 584 x 614 mm 1926 x 584 x 614 mm
Peso a vuoto 87 kg 92 kg 107 kg
Temperatura aria min/max -5 / 42 °C
Temperatura max acqua con Pdc 62 °C
Quantità massima di acqua a 40 °C 284 litri 348 litri 348 litri
Refrigerante R134a
COP 2.41 2.64 2.64
Tempo di riscaldamento 7.45 h,mm 9.33 h,mm 9.33 h,mm
Potenza elettrica assorbita media 500 W
Potenza resistenza elettrica 2000 W
Livello di pressione sonora 53 db(A)
Pressione massima esercizio 6 bar
Scambiatore di calore aggiuntivo 1 x 0.65 mq