Boiler DEFRO GAMMA 30 kW Left/Right
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Defro GAMMA Series Pellet Boilers
The Defro GAMMA series boilers are modern, automated heating devices designed for wood pellets, combining high energy efficiency rated A+ with eco-friendly operation in accordance with Ecodesign standards. Offering a wide range of power options, the 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 recommended fuel, ensuring a high level of user convenience.
- High Energy Efficiency (A+): An A+ energy class and seasonal energy efficiency for space heating of 79-81% guarantee economical fuel consumption.
- Compliance with Ecodesign: The devices meet the stringent requirements of Commission Regulation (EU) 2015/1189 (Ecodesign) regarding low emissions of pollutants (PM, VOC, 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 heating demand of buildings of various sizes.
- Optimal Operation with Buffer Storage: Recommended cooperation with a properly sized hot water buffer storage tank (with a minimum capacity depending on the model) to ensure the most stable and efficient operation of the heating system.
- Low Electricity Consumption: Boilers are characterized by low power consumption for their own needs, further reducing operating costs.
Who is This a Good Choice For?
The Defro GAMMA boilers are an excellent solution for single-family homeowners, as well as smaller commercial buildings or public utility facilities, seeking an efficient, eco-friendly, and automated pellet heating system. Their high energy class and compliance with standards make them an ideal choice for those who value savings, ease of use, and care for the natural environment.
Technical Specification – DEFRO GAMMA Boilers (10-40 kW)
Parameter | GAMMA 10 | GAMMA 15 | GAMMA 20 | GAMMA 25 | GAMMA 30 | GAMMA 40 |
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Device Parameters | ||||||
Model Identifier | GAMMA 10 | GAMMA 15 | GAMMA 20 | GAMMA 25 | GAMMA 30 | GAMMA 40 |
Fuel Feed Method | Automatic fuel feed: it’s recommended to operate the boiler with a domestic hot water tank with a minimum capacity of 200 l | Automatic fuel feed: it’s recommended to operate the boiler with a domestic hot water tank with a minimum capacity of 300 l | Automatic fuel feed: it’s recommended to operate the boiler with a domestic hot water tank with a minimum capacity of 400 l | Automatic fuel feed: it’s recommended to operate the boiler with a domestic hot water tank with a minimum capacity of 500 l | Automatic fuel feed: it’s recommended to operate the boiler with a domestic hot water tank with a minimum capacity of 600 l | Automatic fuel feed: it’s recommended to operate the boiler with a domestic hot water tank with a minimum capacity of 800 l |
Condensing Boiler | No | No | No | No | No | No |
Co-generative Boiler for 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 Room Heating (ηs) (%) | 80 | 79 | 80 | 81 | 80 | 80 |
Fuel and Emissions Related to Seasonal Room Heating | ||||||
Fuel | (recommended / other suitable) | |||||
Logs, moisture ≤ 25 % | No / No | No / No | No / No | No / No | No / No | No / No |
Wood Chips, moisture 15-35 % | No / No | No / No | No / No | No / No | No / No | No / No |
Wood Chips, moisture > 35 % | No / No | No / No | No / No | No / No | No / No | No / No |
Pressed 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 Wooden 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 |
Hard 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 mixture (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 | ||||||
Generated Useful 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 Solid Fuel Co-generative Boilers: Electrical Efficiency | ||||||
at nominal thermal power (ηel,n) (%) | n/a | n/a | n/a | n/a | n/a | n/a |
Electrical Energy Consumption for Own Needs | ||||||
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 |