Solid fuel boiler with automatic loading DEFRO AGRO DUO UNI R 20 kW

High Performance and Durability

Thanks to innovative design, the boiler demonstrates exceptional efficiency of up to 88.7%, effectively utilizing the heat from combustion products. The unique combination of a horizontal chimney and tubular heat exchangers ensures optimal heat transfer.

Ease of Installation and Maintenance

The boiler is designed with installation flexibility in mind: the burner can be positioned on either the left or right side, facilitating integration into various heating systems. The process of cleaning the heat exchanger and burner is maximally simplified, reducing the time required for maintenance.

Modern Burner with Enhanced Features

The burner, made from a monolithic element, is distinguished by its high reliability and long service life. It supports the combustion of various fuels, including crushed coal, coal industry waste, biomass pellets, and grain. The integrated electronic protection system prevents overheating of the motor responsible for fuel supply.

Wide Range of Fuels

Main fuel types: crushed coal (fraction 5-25 mm), coal waste, biomass pellets, and grain. Additionally, the upper chamber can be used for burning coal, wood, or sawdust briquettes. The ability to simultaneously use both chambers significantly expands the boiler's functionality.

Intelligent Control System

The boiler is equipped with a microprocessor control unit with a K1Pv4 color touch screen, which regulates the operation of four circulation pumps (heating, underfloor heating, domestic hot water, recirculation) and controls the mixing valve actuator. Remote control via GSM and the internet is supported (optional).

Maximum Safety

Protection against fuel tank ignition

Thermostatic fire extinguisher

Automatic fire extinguishing system using water-fuel mixture

Sensors for monitoring the opening of the fuel tank lid

Pressure stabilization system

Energy Saving and Cost Efficiency

High-performance gear motor with reverse function, eliminating fuel feed jamming.

Ceramic catalysts, ensuring stable combustion.

ADAPTIVE CONTROL technology – an intelligent management system that automatically adapts boiler operation depending on the intensity of the airflow through the heat exchanger.

Quality and Reliability Guarantee

The heat exchanger is made of high-quality boiler steel with a thickness of 6-8 mm, ensuring its strength and durability. The manufacturer provides a 5-year warranty on the integrity of the heat exchanger, confirming the high quality and reliability of the equipment.