Coal boiler Atmos KC35S

The Atmos KC35S is an innovative coal gasification boiler that can also be operated with logs as a substitute fuel.

The Atmos KC35S coal-fired boiler was specially developed for demanding heating needs in single-family homes, weekend cottages, farm buildings, and workshops. As a robust gasification boiler for wood and coal, the KC35S impresses with a boiler body made of high-quality sheet steel with a material thickness of 6 to 8 mm. Compared to traditional cast iron boilers, this steel boiler offers significantly more efficient heat transfer, resulting in increased energy yield.

As a modern coal gasification boiler, the Atmos KC35S is an excellent replacement for outdated models such as the GK21 or other older cast iron boilers. Its design not only allows for the combustion of coal, but also permits efficient heating with wood logs, ensuring a maximum energy yield of up to 86%. The KC35S complies with all legal requirements according to the Federal Immission Control Ordinance (BImSchV) and is therefore approved for operation in Germany.

Advantages: Coal boiler Atmos KC35S

• Flexible special gasification boiler: Suitable for various fuels such as coal and logs
• Ceramic combustion chamber with rotating cast iron grate for reliable and complete combustion
• Optimum secondary air preheating for efficient combustion during the heating phase and rapid power delivery
• Innovative cast iron grate insert in a ceramic bowl: Specially designed for the effective gasification of lignite briquettes and hard coal
• Easy cleaning of the combustion chamber and exhaust duct thanks to the integrated tube heat exchanger
• High efficiency of up to 86% ensures low fuel consumption and high heating performance
• Modern design paired with an attractive price-performance ratio

Technical data

• Energy efficiency class: C
• Boiler classification: 3
• Nominal heat output: 35 kW
• Efficiency: 87.6%
• Required chimney draft: 24 Pa
• Carbon monoxide content (CO): 196 mg/m³
• Dust emission: 13 mg/m³
• Approved fuels: coal and logs
• Maximum log length: 330 mm
• Exhaust gas temperature: 219 °C
• Exhaust gas mass flow: 0.019 kg/s
• Boiler dimensions (H x W x D): 1435 mm x 675 mm x 758 mm
• Flue pipe connection: 150/152 mm
• Weight: 355.0 kg

Scope of delivery:

• ATMOS KC - Gasification boiler
• Honeywell chimney regulator
• Cleaning accessories
• Ash container
• Filling tap
• Assembly and operating instructions