Solid fuel boiler with manual loading DEFRO KDR PLUS 3 A 30 kW

DEFRO KDR PLUS 3 A – Innovative Solid Fuel Boiler for Efficient Heating

DEFRO KDR PLUS 3 A is a modern heating system designed to heat country houses and cottages with an area of up to 300 m². Equipped with an intelligent PID control system, the boiler automatically regulates the air supply to the combustion zone. The built-in fan controls the fuel combustion process, ensuring a stable temperature of up to 85°C.

If the temperature exceeds the set value, the system reduces or completely stops the air supply, contributing to energy savings and safe operation. Uniform air distribution in the combustion chamber increases efficiency, ensuring optimal fuel combustion at various power levels.

The boiler supports the connection of two pumps (heating and hot water supply), as well as a boiler temperature sensor, making it functional and easy to use.

Support for Different Types of Fuel
Thanks to its universal design, DEFRO KDR PLUS 3 A can operate on the following types of fuel:

Top loading – fine coal (coal dust).

Bottom loading – wood, coal, eco-pea coal, briquettes, wood chips.

Technical Advantages and High Efficiency

Durable heat exchanger – made of certified P265GH boiler steel (6 mm) from ArcelorMittal (Poland), ensuring longevity and resistance to high temperatures.

High efficiency (up to 83%) – thanks to the multi-stage heat exchange system, the thermal energy of flue gases is used efficiently.

Effective thermal insulation – a layer of mineral wool minimizes heat loss and protects the user from burns when in contact with the casing.

Automated control – the S3P controller regulates the air supply and coordinates the operation of two circulation pumps.

Multi-point air supply system – promotes uniform fuel combustion, extends operating time without refueling, and stabilizes the combustion process.

Ease of Use and Cleaning

Movable grate – a foot pedal activates metal teeth that break up the slag layer, improving air supply and increasing combustion efficiency.

Optimized smoke removal system – thanks to the rear chimney position and built-in draft damper, the combustion intensity can be controlled.

Easy maintenance – convenient furnace doors ensure quick and easy cleaning of the heat exchanger and chimney.

Advantages of the DEFRO KDR PLUS 3 A Boiler

High efficiency (up to 83%) – economical fuel use.

Spacious combustion chamber – ensures long operation without frequent refueling.

Automated air supply regulation – maintains a stable temperature and reduces fuel consumption.

Robust construction – made of high-quality P265GH boiler steel.

Versatility in fuel choice – the ability to use wood, coal, briquettes, eco-pea coal.

Safety and convenience – reliable thermal insulation prevents burns, and the well-thought-out cleaning system simplifies maintenance.

DEFRO KDR PLUS 3 A – Reliable and Energy-Efficient Heating Equipment!
Comfort, durability, and fuel savings – in every detail!