ROJEK PK BIO 20 wood gasification boiler 20 kW for logs

The ROJEK PK BIO 20 is a modern wood gasification boiler with a nominal output of 20 kW for the efficient heating of single-family homes and small commercial units. It is designed for logs up to 530 mm in diameter and meets the requirements of EN 303-5 Class 5 as well as Ecodesign.

Highlights/Advantages

⭐ 20 kW nominal output – ideal for single-family homes with moderate heating requirements
⭐ Large combustion chamber (130 liters) – long burn time of 5–9 hours
⭐ Upper filling chamber – convenient and quick loading
⭐ EN 303-5 Class 5 & Ecodesign compliant – eligible for funding and future-proof
⭐ Electronic control – precise and efficient combustion control

Area of ​​application & Target audience

The ROJEK PK BIO 20 is suitable for single-family homes, workshops, and smaller residential buildings with a heat demand of up to approximately 20 kW. It is designed for use in central heating systems and works optimally in combination with a buffer storage tank.

Everyday benefits

The top-loading design makes filling the boiler particularly convenient. The generous combustion chamber volume allows for long burn times, thus reducing refueling intervals. The heat exchanger is easily cleaned via an external operating lever.

Technology & equipment

The boiler operates on the proven wood gasification principle with electronic control. Approved according to EN 303-5 Class 5 and compliant with EU Regulation 2015/1189 (Ecodesign).
Maximum log length: 530 mm
Maximum wood moisture content: 20%
Calorific value of fuel: 14–18 MJ/kg

Efficiency & Environment

Rated power: 20 kW
Efficiency at rated power: 83.1%
Seasonal space heating energy efficiency: 79%

The boiler meets the strict emission requirements of class 5 according to EN 303-5.

Technical data

Scope of delivery

• ROJEK PK BIO 20 wood gasification boiler

• Electronic control

• User manual

• Assembly instructions

FAQ

What is the permissible length of wood?
Up to 530 mm.

Is the boiler eligible for funding?
It meets EN 303-5 Class 5 and Ecodesign standards; national funding conditions are decisive.

Is a buffer storage tank required?
Recommended for efficient and standards-compliant operation.

How long does a filling burn?
Approximately 5–9 hours, depending on fuel quality.

What wood moisture content is permissible?
Maximum 20%.

How is the cleaning done?
Via external cleaning lever and cleaning door.

Conclusion

The ROJEK PK BIO 20 offers efficient wood gasification technology for smaller buildings and impresses with high efficiency and emission values ​​that comply with standards.