Solid fuel boiler with manual loading DEFRO KDR PLUS 3 A 50 kW

DEFRO KDR PLUS 3 A – a reliable and economical solid fuel boiler

The DEFRO KDR PLUS 3 A is a powerful heating boiler for private homes and cottages up to 500 m². It is equipped with a PID controller and a blower fan that automatically control combustion, maintaining the temperature up to 85°C. Upon reaching the set level, the system reduces or stops air supply, increasing energy efficiency and safety.

Supports the connection of two pumps (heating and domestic hot water) and a boiler temperature sensor, ensuring comfortable management.

Fuel flexibility:

Upper loading – fine coal.

Lower loading – firewood, coal, eco-pea, briquettes, wood chips.

Key features:

Durable heat exchanger – boiler steel P265GH (6 mm) from ArcelorMittal (Poland).

High efficiency (up to 83%) – multi-stage heat exchange reduces heat loss.

Effective thermal insulation – a layer of mineral wool minimizes heat loss and protects against burns.

Automatic control – the S3P controller regulates air supply and pump operation.

Multi-point air supply – uniform combustion and extended autonomous operation.

Convenience and ease of maintenance:

Movable grate – the foot pedal destroys slag, improving oxygen access.

Smoke removal system – adjustable damper and rear flue positioning.

Easy cleaning – convenient doors provide quick access to the heat exchanger and flue.

Advantages:

High efficiency (up to 83%) – fuel savings.

Spacious combustion chamber – requires less frequent loading.

Automatic air supply – stable temperature and reduced fuel consumption.

Robust construction – made from certified P265GH steel.

Fuel variety – suitable for firewood, coal, briquettes, and eco-pea.

Safety and comfort – thoughtful thermal insulation and ease of maintenance.

DEFRO KDR PLUS 3 A – reliability, efficiency, and convenience in every detail!