Boiler DEFRO CALORI 20 kW
Product details
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Defro CALORI Pellet Boilers
The Defro CALORI series boilers are modern and eco-friendly heating devices designed for the automatic burning of wood pellets. They are engineered to deliver high energy efficiency and user comfort while meeting the stringent emission standards of the Ecodesign directive. With a wide range of power outputs, CALORI boilers are a reliable source of heat for various buildings.
Key Features of Defro CALORI Boilers:
- Automatic Pellet Burning: The boiler is designed to operate in automatic mode, using recommended pellets or wood briquettes as fuel, ensuring convenient operation.
- High Thermal Efficiency: These devices offer a high operational efficiency of over 84% at nominal power, which translates to effective fuel usage.
- Ecodesign Compliance: The boilers meet the requirements of Commission Regulation (EU) 2015/1189 (Ecodesign), characterized by low emissions of particulate matter (PM), carbon monoxide (CO), organic gaseous compounds (OGC), and nitrogen oxides (NOx).
- Wide Power Range: The series includes models with various nominal powers (approximately 11 kW to 30 kW), allowing for the selection of a device that fits the heating demand of the building.
- Automated and Efficient Operation: The boilers are designed for optimal performance, recommending collaboration with a suitably selected hot water buffer tank to maximize efficiency and stability of the heating system.
Who is this a good choice for?
The Defro CALORI pellet boilers are an excellent choice for homeowners of single-family houses, both new and modernized, who are looking for a reliable, eco-friendly, and mostly maintenance-free heat source. The wide range of available power outputs allows for selecting the appropriate model for different building sizes, ensuring thermal comfort while respecting the environment and complying with current standards.
Technical Specification – DEFRO CALORI Boilers (11-30 kW)
Parameter | CALORI 11 | CALORI 15 | CALORI 20 | CALORI 24 | CALORI 30 |
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Device Parameters | |||||
Model Identifier | CALORI 11 | CALORI 15 | CALORI 20 | CALORI 24 | CALORI 30 |
Fuel Feeding Method | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank of at least 220 l capacity | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank of at least 300 l capacity | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank of at least 400 l capacity | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank of at least 480 l capacity | Automatic fuel feeding: it is recommended to operate the boiler with a domestic hot water storage tank of at least 600 l capacity |
Condensing Boiler | no | no | no | no | no |
Combined Heat and Power Boiler for Solid Fuel | no | no | no | no | no |
Multi-functional Boiler | no | no | no | no | no |
Fuel and Emissions Related to Seasonal Space Heating | |||||
Fuel | (recommended / other suitable) | ||||
Logs, moisture ≤ 25 % | no / no | no / no | no / no | no / no | no / no |
Chips, moisture 15-35 % | no / no | no / no | no / no | no / no | no / no |
Chips, moisture > 35 % | 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 |
Sawdust, moisture ≤ 50 % | no / no | no / no | no / no | no / no | no / no |
Other wood biomass | no / no | no / no | no / no | no / no | no / no |
Non-wood biomass | no / no | no / no | no / no | no / no | no / no |
Hard coal | no / no | no / no | no / no | no / no | no / no |
Lignite (including briquettes) | no / no | no / no | no / no | no / no | no / no |
Coke | no / no | no / no | no / no | no / no | no / no |
Anthracite | 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 |
Other fossil fuel | 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 |
Other mix of biomass and fossil fuel | no / no | no / no | no / no | no / no | no / no |
Seasonal energy efficiency for space heating (ηs) (%) – Recommended fuel | 80 | 79 | 80 | 80 | 80 |
PM Emission (mg/m³) – Recommended fuel | 15 | 18 | 15 | 16 | 16 |
VOC Emission (mg/m³) – Recommended fuel | 18 | 15 | 15 | 14 | 15 |
CO Emission (mg/m³) – Recommended fuel | 346 | 403 | 433 | 287 | 321 |
NOₓ Emission (mg/m³) – Recommended fuel | 151 | 146 | 149 | 155 | 140 |
Properties When Operating Exclusively with Recommended Fuel | |||||
Produced Useful Heat | |||||
at nominal thermal power (Pn) (kW) | 11.2 | 15.5 | 21.0 | 24.2 | 29.8 |
at 30 % of nominal thermal power (Pp) (kW) | 3.0 | 4.0 | 6.0 | 6.9 | 8.9 |
Operational Efficiency | |||||
at nominal thermal power (ηn) (%) | 84.7 | 84.0 | 84.3 | 84.4 | 84.3 |
at 30 % of nominal thermal power (ηp) (%) | 85.1 | 83.5 | 84.1 | 83.9 | 83.8 |
For Solid Fuel Combined Heat and Power Boilers: Electrical Efficiency | |||||
at nominal thermal power (ηel,n) (%) | n/a | n/a | n/a | n/a | n/a |
Electricity Consumption for Own Needs | |||||
at nominal thermal power (elmax) (kW) | 0.078 | 0.081 | 0.118 | 0.127 | 0.125 |
at 30 % of nominal thermal power (elmin) (kW) | 0.026 | 0.030 | 0.031 | 0.038 | 0.034 |
secondary devices for emission reduction, where applicable | 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 |