Solid fuel boiler with manual loading DEFRO OPTIMA KOMFORT PLUS A 8 kW

DEFRO OPTIMA KOMFORT PLUS A – energy-efficient long-burning solid fuel boiler

DEFRO OPTIMA KOMFORT PLUS A is a modern solid fuel boiler designed for heating private houses and cottages up to 80 m². This model represents an innovative generation of heating systems, equipped with an electronic control unit with a PID controller. Air supply control is carried out by a blower fan, which regulates the fuel combustion speed, ensuring stable temperature maintenance not exceeding 85°C.

If the coolant temperature exceeds the set value, the system automatically reduces or completely stops the air supply, allowing efficient combustion process management and fuel saving. Distributed air supply contributes to the maximum efficient fuel combustion at different power levels.

Additionally, the boiler is equipped with the ability to connect a temperature sensor for controlling the indirect heating boiler heating, as well as supporting two circulation pumps for heating and hot water supply.

Advanced control system

K3P controller with mixing valve control

S3P driver (for 8 kW – standard driver ST-28 OPTI PID)

DEFRO-MZ – controller for the mixing valve with weather-dependent regulation

Additional modules: GSM, Internet

KDR 3 NZ version for closed-type systems

Fuel flexibility

DEFRO OPTIMA KOMFORT PLUS A supports various types of fuel, making it a universal heating solution:

Top loading (burning from the top): coal fines.

Bottom loading (kindling from the bottom): wood, eco-peas, briquettes, chips, coal.

Key advantages of the boiler

Durable heat exchanger – made of certified heat-resistant boiler steel P265GH (6 mm, Arcelor Mittal, Poland), ensuring durability and resistance to high temperatures.

Efficiency (COP) – up to 83%, achieved through efficient heat exchange and rational use of flue gas energy.

Reliable thermal insulation – mineral rock wool is installed between the casing and the heat exchanger, as well as in the furnace doors, preventing burns during maintenance.

Movable grate – facilitates cleaning from ash and coke and improves air circulation for increased combustion efficiency.

Mechanical cleaning system – integrated foot pedal activates special teeth that break the slag crust, ensuring better air access to the fuel.

Optimized flue gas removal – thanks to a smoke duct with an adjustable damper, the chimney draft can be controlled, affecting the combustion process.

Simple cleaning – convenient access to the heat exchanger and chimney simplifies maintenance and extends the boiler's service life.

Ideal heating solution for:

Private houses and countryside cottages

Warehouses and production facilities

Small commercial premises

Additional advantages

Fuel savings due to high heat emission and precise power control.

Operational flexibility – the ability to work with various types of fuel.

Compatibility with automated control systems – support for draft regulator and blower system.

Safety and durability – high-quality materials and well-thought-out design ensure reliable operation for many years.

DEFRO OPTIMA KOMFORT PLUS A is a modern, reliable, and highly efficient boiler for comfortable and economical heating of your home!