The NunnaUuni-Aqua+ water circulating fireplace will improve the energy efficiency of your home

NunnaUuni-Aqua+ can be used as part of your home’s hydronic heating system or just for heating domestic water.

Only some of the heat produced by the fireplace is used for hot water, while the rest radiates slowly and evenly into your home.

The heat exchanger is at the core of the fireplace

  • Does not affect the external dimensions of the fireplace.
  • Can be installed in fireplaces that are already in use.
  • The water temperature range is high; also suitable for heating domestic water.
  • The water capacity of the heat exchanger is small, which means that you can safely use the fireplace during power outages.

The heat exchanger is made of a continuous steel pipe

  • No joints inside the fireplace.
  • Easy to install; an HVAC technician is not required.

Water heating values of the fireplace

  • Temperature range of incoming water: 20–70 °C
  • Temperature range of outgoing water: 40–80 °C
  • Thermal energy transferred to water: 5–10 kWh*
    *Depends on the temperature of the incoming water

Dimensioning values of the system:

  • Dimensioning pressure: 1.5 bar
  • Maximum pressure: 6 bar
  • Volume flow of water: 1 l/min

Considerations regarding the system

  • A coil or hybrid accumulator with a capacity of at least 300 litres is recommended.
  • The water circuit requires its own circulation pump and control unit that controls the pump based on the temperature difference between the fireplace and accumulator.
  • The system must be equipped with a deaerator, expansion tank and safety valve.
  • The recommended material of the piping is stainless steel or copper. Plastic and composite pipes are not suitable for the purpose due to their low temperature resistance.

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