Solid fuel boiler with automatic loading DEFRO AGRO DUO UNI R 15 kW

Maximum Efficiency and Reliability

Thanks to its thoughtful design, this boiler achieves a high efficiency of up to 88.7%, effectively using the thermal energy of combustion products. The special horizontal chimney system, combined with tubular heat exchangers, ensures maximum heat transfer efficiency.

Installation Flexibility and Ease of Operation

The boiler design allows the burner to be installed on either the left or right side, providing convenient integration into various heating systems. Cleaning the heat exchanger and burner is done with minimal effort.

Innovative New Generation Burner

The unique screw burner, made from a solid element, ensures reliable operation and a long service life. It supports the combustion of various types of fuel: crushed coal, coal waste, biomass pellets, and grain. The built-in electronic protection prevents the fuel feed motor from overheating.

Fuel Usage Versatility

Main fuel: crushed coal (5-25 mm), coal waste, biomass pellets, grain. Additional fuel (upper chamber): coal, wood, sawdust briquettes. The ability to use both chambers simultaneously expands the boiler's operational capabilities.

Thoughtful Control System

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

Top-level Safety

Fuel tank ignition protection system

Thermostatic fire extinguisher

Automatic fire extinguishing system with water-fuel

Fuel tank lid opening sensors

Pressure equalization system

Energy Efficiency and Economy

High-efficiency motor-reducer with reverse, preventing fuel feed blockage.

Ceramic catalysts, ensuring combustion process stability.

ADAPTIVE CONTROL – intelligent control system adapting the boiler's operation based on the airflow through the heat exchanger.

Warranty and Reliability

The boiler's heat exchanger is made of certified boiler steel with a thickness of 6-8 mm. The manufacturer provides a 5-year warranty on the integrity of the heat exchanger, confirming its durability and quality.