Log boiler SMART-DUO 17-30 KW

pelletwith water heatercommercial

The Smart-DUO is a dual-mode combi boiler that combines the advantages of pellets and logs in a single compact unit, designed to deliver comfort and flexibility for both private and professional users. It integrates proven technologies (Smart-HV and Nano-PK) and HARGASSNER innovations for efficient, easy-to-operate performance.

Advantages

• Compact footprint (0.90 m²)
• Communicating combustion chambers
• Low smoke outlet connection
• Automatic ignition and cleaning
• eCleaner electrofilter available as option

Key features

• Hybrid boiler designed to operate on pellets and logs
• Accepts logs up to 50 cm
• Compact, ergonomic format delivered fully operational
• Two communicating combustion chambers lined with refractory material
• Reverse flame operation
• Option to fit an eCleaner electrofilter at any time
• Automatic exchanger and filter cleaning system
• Smart-Touch controller supplied: manages a buffer with 3 sensors included, manages a DHW cylinder and 2 zones (1 hot water cylinder, 1 sanitary circulation)
• Loading door illumination and smoke extraction when the door is open
• Optimized combustion control by lambda probe
• Immediate or delayed automatic ignition (300 W) for pellets; manual or automatic log ignition via the pellet chamber
• Automatic pellet feed by suction from remote silo
• Double rotary safety lock
• Automatic ash removal via moving grate and ash box with auger
• Possible compatibility with a solar thermal system

Brochure and demonstrations

• Product brochure available for download (Smart-DUO flyer)
• 3D view and augmented reality available via 3D viewer

Technical specifications

• General note: All values are to be assigned as follows: Log boiler / Pellet boiler.
• Maximum operating temperature: 85 °C
• Maximum operating pressure: 3 bar
• Electrical connection: 230 V AC, 50 Hz, 10 A protection
• Smart-DUO 17 — Nominal power: 17 kW (logs) / 17 kW (pellets); Maximum fuel call power: 18.1 kW / 17.9 kW; Minimum power: 17 kW / 5.1 kW; LHV efficiency at nominal power: 94.3 % / 94.9 %; HHV efficiency at nominal power: 86.6 % / 87.8 %; ETAs: 84 % / 81 %; Dimensions (W x H x D): 790 x 1540 x 1080 mm; Weight: 655 kg; Fill volume: 102 l / - ; Footprint: 0.9 m²; Flue outlet diameter: 130 mm; Ash box capacity: 15 l; Water content: 84 l; Flow/Return connections: 1 ¼ / 1 ½; Energy class: A++.
• Smart-DUO 20 — Nominal power: 19.4 kW / 21.7 kW; Maximum fuel call power: 21.3 kW / 21.1 kW; Minimum power: 15.1 kW / 6.5 kW; LHV efficiency at nominal power: 93.7 % / 94.6 %; HHV efficiency at nominal power: 86 % / 87.5 %; ETAs: 83 % / 81 %; Dimensions: 790 x 1540 x 1080 mm; Weight: 655 kg; Fill volume: 102 l / - ; Footprint: 0.9 m²; Flue diameter: 130 mm; Ash box capacity: 15 l; Water content: 84 l; Flow/Return: 1 ¼ / 1 ½; Energy class: A++.
• Smart-DUO 23 — Nominal power: 23 kW / 23 kW; Maximum fuel call power: 24.5 kW / 24.2 kW; Minimum power: 15.1 kW / 6.9 kW; LHV efficiency at nominal power: 93.1 % / 94.2 %; HHV efficiency at nominal power: 85.4 % / 87.2 %; ETAs: 82 % / 81 %; Dimensions: 790 x 1540 x 1080 mm; Weight: 655 kg; Fill volume: 102 l / - ; Footprint: 0.9 m²; Flue diameter: 130 mm; Ash box capacity: 15 l; Water content: 84 l; Flow/Return: 1 ¼ / 1 ½; Energy class: A++.
• Smart-DUO 30 — Nominal power: 23 kW / 30 kW; Maximum fuel call power: 24.5 kW / 31.6 kW; Minimum power: 15.1 kW / 9 kW; LHV efficiency at nominal power: 93.1 % / 93.4 %; HHV efficiency at nominal power: 85.4 % / 86.4 %; ETAs: 82 % / 81 %; Dimensions: 790 x 1540 x 1080 mm; Weight: 655 kg; Fill volume: 102 l / - ; Footprint: 0.9 m²; Flue diameter: 130 mm; Ash box capacity: 15 l; Water content: 84 l; Flow/Return: 1 ¼ / 1 ½; Energy class: A++.