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Combi Boiler

Smart-DUO
17-30 kW

Pellet & log module in one boiler
Energy label up to A++

Smart double heating system

The compact combi boiler for pellets and wood log

The compact Smart-DUO combi boiler has a 2-zone combustion chamber for pellets and logs under a shared panelling. This makes the new wood log and pellet combination heating system impressive both in technical terms and in terms of its compact appearance. The advantages of the proven log boiler Smart-HV and the pellet boiler Nano-PK are combined, resulting in a sophisticated combustion technology for both fuels. The Smart-DUO impresses with its modern, timeless design, compact size, functionality and, of course, its attractive price-performance ratio. An integrated eCleaner particle separator (optional) filters fine dust emissions to a minimum. The advantages of Hargassner pellet and log boilers are summarised.

  • Compact design with only 0.90 m² space requirement
  • Quick installation: delivery completely ready for operation
  • Pellet & log module in one boiler
  • 2 optimised fireclay combustion chambers for pellets & wood logs
  • Automatic boiler cleaning device for both fuels
  • Control of buffer, boiler & 2 heat circuits
  • Optional and retrofittable at any time: integrated eCleaner (particle separator)
  • Especially suitable for renovations: Flue pipe connection height 50 cm
  • User-friendly operate TouchPro control system with smart energy management
Wood logs
  • Optimal filling chamber size for half-metre logs
  • Filling chamber lighting as standard
  • Smouldering gas extraction to reduce smoke emissions during refuelling
  • Automatic primary & secondary air control
  • Automatic ignition via pellet combustion chamber
Pellets
  • Automatic ignition with only 300 W power consumption
  • Suction system with intermediate container
  • Double rotary valve as a safety device against burn-back
  • Automatic sliding grate
  • Ash pan with compaction system

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Specifics
of Smart-DUO

Discover the new Smart-DUO 17-30 kW combi boiler

Welcome to our latest innovation in heating technology – the Smart-DUO 17-30 kW combi boiler. This compact combi boiler impresses with its unique 2-zone combustion chamber, which burns both pellets and logs efficiently and in an environmentally friendly way under a single cladding.

Thanks to state-of-the-art technology, you can experience the Smart-DUO directly on our website with the help of our 3D boiler view and the augmented reality (AR) function. Get a comprehensive first impression of the technology and the compact look of this heating system. With the AR function, you can even place the boiler virtually in your own boiler room and see how perfectly it fits into your surroundings.

See the technical sophistication and elegant, space-saving design of the Smart-DUO 17-30 kW for yourself. Heating convenience and efficiency redefined – with the combination boiler that leaves nothing to be desired.

Open 3D model in a new window
  1. Fully fireclayed pellet combustion chamber
  2. Sliding grate
  3. Automatic ignition with 300 W
  4. Insertion screw
  5. Double cell wheel dosing sluice
  6. Pellet storage hopper
  7. Pellet suction turbine
  8. Fill level indicator
  9. Filling chamber for 1/2 m logs (up to 53 cm)
  10. Filling chamber lining – prevents tar formation
  11. Smouldering gas extraction at the top
  12. Cooling coil for thermal safety circuit
  13. Turbulators with automatic boiler cleaning device
  14. Particle filter eCleaner with automatic cleaning (optional)
  15. Suction draught fan
  16. Low flue pipe connection height (50 cm)
  17. High-quality, solid wood log fireclay combustion chamber
  18. Return flow boost (optional)
  19. Pellet ash pan
  20. Wood log ash drawer
  21. TouchPro control system with smart energy management
View 3D model View cross section

Technical
details

    Smart-DUO 17
    Nominal capacity (NC) 17 / 17 kW
    Fuel heat output 18,1 / 17,9 kW
    Minimum capacity 17 / 5,1 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 94,3 / 94,9 %
    NCV efficiency at 30 % nominal output (np) - / 91,4 %
    GCV efficiency at nominal output 86,6 / 87,8 %
    GCV at 30 % nominal output - / 84,5 %
    Seasonal energy efficiency ETAs 84 / 81 %
    Boiler temperature range 85 °C
    Measures (w x h x d) 790 x 1505 x 1135 mm
    Weight 655 kg
    Filling volume 102 / - l
    Space requirement 0,9 m²
    Flue pipe diameter 130 mm
    Ash box volume 15 l
    Water content 84 l
    Flow/Return 5/4 "
    Energy label A++
    Smart-DUO 20
    Nominal capacity (NC) 19,4 / 21,7 kW
    Fuel heat output 21,3 / 21,1 kW
    Minimum capacity 15,1 / 6,5 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 93,7 / 94,6 %
    NCV efficiency at 30 % nominal output (np) - / 91,4 %
    GCV efficiency at nominal output 86 / 87,5 %
    GCV at 30 % nominal output - / 84,5 %
    Seasonal energy efficiency ETAs 83 / 81 %
    Boiler temperature range 85 °C
    Measures (w x h x d) 790 x 1505 x 1135 mm
    Weight 655 kg
    Filling volume 102 / - l
    Space requirement 0,9 m²
    Flue pipe diameter 130 mm
    Ash box volume 15 l
    Water content 84 l
    Flow/Return 5/4 "
    Energy label A++
    Smart-DUO 23
    Nominal capacity (NC) 23 / 23 kW
    Fuel heat output 24,5 / 24,2 kW
    Minimum capacity 15,1 / 6,9 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 93,1 / 94,2 %
    NCV efficiency at 30 % nominal output (np) - / 91,4 %
    GCV efficiency at nominal output 85,4 / 87,2 %
    GCV at 30 % nominal output - / 84,5 %
    Seasonal energy efficiency ETAs 82 / 81 %
    Boiler temperature range 85 °C
    Measures (w x h x d) 790 x 1505 x 1135 mm
    Weight 655 kg
    Filling volume 102 / - l
    Space requirement 0,9 m²
    Flue pipe diameter 130 mm
    Ash box volume 15 l
    Water content 84 l
    Flow/Return 5/4 "
    Energy label A++
    Smart-DUO 30
    Nominal capacity (NC) 23 / 30 kW
    Fuel heat output 24,5 / 31,6 kW
    Minimum capacity 15,1 / 9 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 93,1 / 93,4 %
    NCV efficiency at 30 % nominal output (np) - / 91,4 %
    GCV efficiency at nominal output 85,4 / 86,4 %
    GCV at 30 % nominal output - / 84,5 %
    Seasonal energy efficiency ETAs 82 / 81 %
    Boiler temperature range 85 °C
    Measures (w x h x d) 790 x 1505 x 1135 mm
    Weight 655 kg
    Filling volume 102 / - l
    Space requirement 0,9 m²
    Flue pipe diameter 130 mm
    Ash box volume 15 l
    Water content 84 l
    Flow/Return 5/4 "
    Energy label A++

    All values given are for wood logs / pellets
    Max. operation temperature 85°C, max. operating pressure 3 bar, boiler temperature range 85 °C, obligatory back-end protection with mixing valve, electrical supply 230 AC, 50 Hz, 13 A

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