Solid fuel boiler with automatic loading DEFRO AGRO DUO UNI R 25 kW

High Efficiency and Reliability

The innovative design of the boiler ensures maximum efficiency of up to 88.7%, allowing optimal utilization of the heat generated during combustion. The well-thought-out combination of a horizontal flue and tubular heat exchangers provides excellent heat transfer.

Easy Installation and User Convenience

The boiler is designed for flexible installation – the burner can be placed on either the left or right side, making integration into different heating systems much easier. Maintenance is also hassle-free: cleaning the heat exchanger and burner is quick and effortless.

Advanced Burner with Enhanced Capabilities

The monolithic burner design ensures high durability and a long service life. It supports the combustion of various fuel types, including crushed coal, coal waste, biomass pellets, and grain crops. The electronic protection system prevents overheating of the fuel feed motor, ensuring stable and safe boiler operation.

Versatile Fuel Compatibility

 -  Primary fuels: Crushed coal (5–25 mm), coal waste, biomass pellets, grain.
 - Additional fuels (for the upper combustion chamber): Coal, firewood, sawdust briquettes.
The ability to simultaneously use both combustion chambers significantly enhances the boiler’s performance and functionality.

Smart Control System

The modern K1Pv4 microprocessor controller with a touchscreen manages four circulation pumps (heating, underfloor heating, hot water supply, and recirculation) and regulates the mixing valve. Remote control via GSM or the internet makes operation even more convenient.

Comprehensive Safety Features

 -  Fuel tank fire protection
 - Thermostatic fire suppression system
 -  Automatic fire extinguishing with water-fuel technology
 -  Sensors monitoring the fuel tank lid opening
 - Pressure stabilization system to prevent malfunctions

Energy Efficiency and Cost Savings

 -  High-efficiency gear motor with reverse function prevents fuel feed blockages.
 -  Ceramic catalysts ensure stable and complete combustion.
 - ADAPTIVE CONTROL technology automatically adjusts boiler operation based on airflow volume, improving efficiency and reducing resource consumption.

Guaranteed Quality and Durability

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