Boiler DEFRO GAMMA 25 kW Left/Right
SKU: F170M
EAN: 2010000030196
Product details
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Defro GAMMA Pellet Boilers
The Defro GAMMA series boilers are modern, automated heating devices that use wood pellets, combining high energy efficiency rated A+ with environmentally friendly operation in accordance with Ecodesign regulations. Offering a wide range of power options, GAMMA boilers provide comfortable and economical heating for various applications.
Key Features of Defro GAMMA Boilers:
- Automatic Pellet Combustion: The boiler operates fully automatically, using pellets or wood briquettes as the recommended fuel, ensuring a high level of user comfort.
- High Energy Efficiency (A+): With an energy class rating of A+ and seasonal space heating efficiency of 79-81%, these boilers guarantee economical fuel consumption.
- Ecodesign Compliance: The devices meet the stringent requirements of Commission Regulation (EU) 2015/1189 (Ecodesign) regarding low emissions of pollutants (PM, VOCs, CO, NOx) during pellet combustion.
- Wide Power Range (10-40 kW): The availability of models with rated power from 10 kW to 40 kW allows for precise matching of the boiler to the heat demand of buildings of various sizes.
- Optimal Operation with a Buffer: Recommended to work with a properly sized hot water buffer tank (minimum capacity dependent on the model) to ensure the most stable and efficient operation of the heating system.
- Low Electricity Consumption: The boilers feature low power consumption for their own needs, further reducing operational costs.
Who is it a good choice for?
Defro GAMMA boilers are an excellent solution for homeowners, as well as smaller commercial or public utility buildings, looking for an efficient, eco-friendly, and automated pellet heating system. Their high energy class rating and compliance with standards make them an ideal choice for those who value savings, user comfort, and care for the natural environment.
Technical Specifications – DEFRO GAMMA Boilers (10-40 kW)
| Parameter | GAMMA 10 | GAMMA 15 | GAMMA 20 | GAMMA 25 | GAMMA 30 | GAMMA 40 |
|---|---|---|---|---|---|---|
| Device Parameters | ||||||
| Model Identifier | GAMMA 10 | GAMMA 15 | GAMMA 20 | GAMMA 25 | GAMMA 30 | GAMMA 40 |
| Fuel Feeding Method | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank with a minimum capacity of 200 l | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank with a minimum capacity of 300 l | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank with a minimum capacity of 400 l | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank with a minimum capacity of 500 l | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank with a minimum capacity of 600 l | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank with a minimum capacity of 800 l |
| Condensing Boiler | No | No | No | No | No | No |
| Co-generation Boiler on Solid Fuel | No | No | No | No | No | No |
| Multi-functional Boiler | No | No | No | No | No | No |
| Parameters According to Regulation 2015/1187 | ||||||
| Energy Efficiency Class | A+ | A+ | A+ | A+ | A+ | A+ |
| Nominal Thermal Power (kW) | 10 | 15 | 20 | 25 | 30 | 40 |
| Energy Efficiency Index (EEI) | 119 | 117 | 118 | 119 | 118 | 118 |
| Seasonal Energy Efficiency for Space Heating (ηs) (%) | 80 | 79 | 80 | 81 | 80 | 80 |
| Fuel and Emissions for Seasonal Space Heating | ||||||
| Fuel | (recommended / other suitable) | |||||
| Logs, moisture ≤ 25 % | No / No | No / No | No / No | No / No | No / No | No / No |
| Chips, moisture 15-35 % | No / No | No / No | No / No | No / No | No / No | No / No |
| Chips, moisture > 35 % | No / No | No / No | No / No | No / No | No / No | No / No |
| Peeled wood in the form of pellets or briquettes | Yes / No | Yes / No | Yes / No | Yes / No | Yes / No | Yes / No |
| Sawdust, moisture ≤ 50 % | No / No | No / No | No / No | No / No | No / No | No / No |
| Other Wood Biomass | No / No | No / No | No / No | No / No | No / No | No / No |
| Non-wood Biomass | No / No | No / No | No / No | No / No | No / No | No / No |
| Coal | No / No | No / No | No / No | No / No | No / No | No / No |
| Lignite (including briquettes) | No / No | No / No | No / No | No / No | No / No | No / No |
| Coke | No / No | No / No | No / No | No / No | No / No | No / No |
| Anthracite | No / No | No / No | No / No | No / No | No / No | No / No |
| Briquettes from mixed fossil fuel | No / No | No / No | No / No | No / No | No / No | No / No |
| Other fossil fuel | No / No | No / No | No / No | No / No | No / No | No / No |
| Briquettes from a mix (30-70 %) of biomass and fossil fuel | No / No | No / No | No / No | No / No | No / No | No / No |
| Other mixture of biomass and fossil fuel | No / No | No / No | No / No | No / No | No / No | No / No |
| PM Emission (mg/m³) – Recommended Fuel | 14 | 15 | 15 | 14 | 14 | 15 |
| OGC Emission (mg/m³) – Recommended Fuel | 17 | 15 | 15 | 16 | 16 | 16 |
| CO Emission (mg/m³) – Recommended Fuel | 262 | 278 | 279 | 284 | 283 | 309 |
| NOₓ Emission (mg/m³) – Recommended Fuel | 184 | 186 | 191 | 198 | 176 | 184 |
| Properties When Operating with Recommended Fuel Only | ||||||
| Produced Usable Heat | ||||||
| at nominal thermal power (Pn) (kW) | 10.2 | 15.3 | 19.8 | 25.0 | 30.1 | 38.8 |
| at 30 % nominal thermal power (Pp) (kW) | 2.9 | 4.5 | 5.9 | 7.1 | 8.9 | 11.6 |
| Operational Efficiency | ||||||
| at nominal thermal power (ηn) (%) | 85.3 | 84.7 | 84.9 | 85.1 | 84.6 | 84.6 |
| at 30 % nominal thermal power (ηp) (%) | 85.6 | 83.6 | 84.3 | 84.8 | 84.3 | 83.8 |
| For Co-generation Boilers on Solid Fuel: Electrical Efficiency | ||||||
| at nominal thermal power (ηel,n) (%) | n/a | n/a | n/a | n/a | n/a | n/a |
| Electricity Consumption for Own Use | ||||||
| at nominal thermal power (elmax) (kW) | 0.075 | 0.081 | 0.101 | 0.116 | 0.126 | 0.132 |
| at 30 % nominal thermal power (elmin) (kW) | 0.026 | 0.028 | 0.032 | 0.036 | 0.038 | 0.041 |
| Secondary devices for emission reduction, where applicable | n/a | n/a | n/a | n/a | n/a | n/a |
| in standby mode (PSB) (kW) | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 | 0.002 |
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