Boiler DEFRO FIREWOOD DUO 15 kW
SKU: F170H
EAN: 2010000030134
Product details
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Defro FIREWOOD DUO Dual-Fuel Boilers
The Defro FIREWOOD DUO series boilers are versatile and modern heating devices that combine the convenience of automatic pellet burning with the option of manually loading logs. Designed with a focus on high efficiency and environmental friendliness, these boilers meet the Ecodesign directive requirements when operating on pellets, achieving an energy class rating of A+. The FIREWOOD DUO series offers flexible and reliable heating solutions for a variety of needs.
Key Features of the Defro FIREWOOD DUO Boilers:
- Two Operating Modes (DUO): Automatic pellet burning for maximum convenience and efficiency, along with the option for manual log loading as an alternative or additional heat source.
- High Energy Efficiency (A+): In automatic pellet burning mode, the boilers achieve high efficiency (up to around 86%) and a seasonal energy efficiency for space heating of 82-83%.
- Ecodesign Compliance: When operating on pellets, the devices meet stringent emission standards for pollutants (PM, VOC, CO, NOx) in accordance with EU Regulation 2015/1189.
- Wide Power Range: The series is available in models with nominal heating power of 12, 15, 19, and 24 kW, allowing for the suitable selection of a boiler to match various building heating demands.
- Low Energy Consumption and Quiet Operation: The optimized design ensures minimal electricity use for the boiler’s own needs and low noise levels during operation.
- Recommended for Use with a Buffer Tank: To ensure the most stable and efficient operation, especially in automatic mode, it is recommended to operate the boiler with a suitably sized thermal buffer tank.
Who is This a Good Choice For?
The Defro FIREWOOD DUO boilers are an ideal solution for users seeking a flexible heating system that combines the comfort of automatic pellet heating with the option to use logs. They are an excellent choice for homeowners who value both comfort and fuel independence while maintaining high ecological and efficiency standards when operating on pellets.
Technical Specification – DEFRO FIREWOOD DUO Boilers (12-24 kW)
| Parameter | FIREWOOD DUO 12 | FIREWOOD DUO 15 | FIREWOOD DUO 19 | FIREWOOD DUO 24 |
|---|---|---|---|---|
| Device Parameters | ||||
| Model Identifier | FIREWOOD DUO 12 | FIREWOOD DUO 15 | FIREWOOD DUO 19 | FIREWOOD DUO 24 |
| Fuel Feeding Method | Automatic fuel feeding: operation of the boiler requires a hot water storage tank with a capacity of 240 l | Automatic fuel feeding: it is recommended to operate the boiler with a hot water storage tank with a minimum capacity of 300 l | Automatic fuel feeding: it is recommended to operate the boiler with a hot water storage tank with a minimum capacity of 380 l | Automatic fuel feeding: it is recommended to operate the boiler with a hot water storage tank with a minimum capacity of 480 l |
| Condensing Boiler | No | No | No | No |
| Cogeneration Boiler for Solid Fuel | No | No | No | No |
| Multifunctional Boiler | No | No | No | No |
| Parameters According to Regulation 2015/1187 | ||||
| Energy Efficiency Class | A+ | A+ | A+ | A+ |
| Nominal Heat Power (kW) | 12 | 15 | 19 | 24 |
| Energy Efficiency Index (EEI) | 121 | 121 | 121 | 121 |
| Seasonal Energy Efficiency for Room Heating (ηs) (%) | 83 | 82 | 82 | 82 |
| Fuel and Emissions for Seasonal Room Heating | ||||
| Fuel | (recommended / other suitable) | |||
| Logs, moisture ≤ 25 % | No / No | No / No | No / No | No / No |
| Wood Chips, moisture 15-35 % | No / No | No / No | No / No | No / No |
| Wood Chips, moisture > 35 % | No / No | No / No | No / No | No / No |
| Compressed Wood in the form of Pellets or Briquettes | Yes / No | Yes / No | Yes / No | Yes / No |
| Sawdust, moisture ≤ 50 % | No / No | No / No | No / No | No / No |
| Other Wood Biomass | No / No | No / No | No / No | No / No |
| Non-Wood Biomass | No / No | No / No | No / No | No / No |
| Hard Coal | No / No | No / No | No / No | No / No |
| Lignite (including briquettes) | No / No | No / No | No / No | No / No |
| Coke | No / No | No / No | No / No | No / No |
| Anthracite | No / No | No / No | No / No | No / No |
| Briquettes of Mixed Fossil Fuel | No / No | No / No | No / No | No / No |
| Other Fossil Fuel | No / No | No / No | No / No | No / No |
| Briquettes from a Mixture (30-70 %) of Biomass and Fossil Fuel | No / No | No / No | No / No | No / No |
| Other Mixture of Biomass and Fossil Fuel | No / No | No / No | No / No | No / No |
| PM Emission (mg/m³) – Recommended Fuel | 17 | 17 | 16 | 17 |
| OGC Emission (mg/m³) – Recommended Fuel | 14 | 13 | 16 | 13 |
| CO Emission (mg/m³) – Recommended Fuel | 282 | 268 | 286 | 282 |
| NOₓ Emission (mg/m³) – Recommended Fuel | 119 | 120 | 114 | 111 |
| Characteristics When Operating on Recommended Fuel Only | ||||
| Generated Usable Heat | ||||
| at nominal heat power (Pn) (kW) | 12.2 | 15.2 | 19.3 | 24.2 |
| at 30% nominal heat power (Pp) (kW) | 3.5 | 4.2 | 5.3 | 7.1 |
| Operational Efficiency | ||||
| at nominal heat power (ηn) (%) | 85.4 | 85.5 | 85.8 | 85.5 |
| at 30% nominal heat power (ηp) (%) | 86.6 | 86.6 | 86.0 | 86.2 |
| For Solid Fuel Cogeneration Boilers: Electric Efficiency | ||||
| at nominal heat power (ηel,n) (%) | n/a | n/a | n/a | n/a |
| Electricity Consumption for Own Needs | ||||
| at nominal heat power (elmax) (kW) | 0.029 | 0.037 | 0.040 | 0.055 |
| at 30% nominal heat power (elmin) (kW) | 0.012 | 0.018 | 0.020 | 0.032 |
| Secondary Devices for Emission Reduction, where applicable | n/a | n/a | n/a | n/a |
| in standby mode (PSB) (kW) | 0.003 | 0.003 | 0.003 | 0.003 |
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