Wood gasifying boiler Metal-Fach SEMAX BASIC 40 kW

SEMAX BASIC 15–40 kW – wood gasification boiler

SEMAX BASIC is a central heating boiler designed for gasification of piece firewood. The series includes four output variants: 15, 20, 30 and 40 kW, allowing the boiler to be selected according to the requirements of a specific heating system.

The boiler uses a wood gasification process in which appropriately supplied primary and secondary air enables efficient fuel combustion. The design of the gasification chamber and the use of ceramic plates support the combustion process and help reduce the emission of harmful substances.

SEMAX BASIC is equipped with a mechanical bimetal thermometer and a draught regulator, which regulates the air supply to the combustion chamber depending on the temperature of the heating medium.

IMPORTANT! The central heating boiler may only be installed in a heating system together with a buffer tank. The buffer tank is not included in the boiler price.

Wood Gasification Technology

SEMAX BASIC uses a specially designed gasification and combustion chamber, in which wood undergoes a thermal conversion process. Primary and secondary air can be adjusted using dedicated slides, allowing the combustion process to be adapted as required.

The combustion chamber is equipped with ceramic plates that increase the process temperature and help burn particles rising above the combustion bed. This solution contributes to combustion efficiency and reduces the amount of harmful compounds in the flue gas.

Construction and Design Solutions

• Draught regulator – depending on the heating medium temperature, it controls the flap regulating the air supply to the boiler combustion chamber.
• Mechanical thermometer – a bimetal mechanical thermometer equipped with a long measuring probe.
• Turbulators – create turbulence in the flue gas, supporting heat exchange between the flue gas and the water jacket.
• Horizontal shelf-type convection channels – the heat exchanger design ensures high heat transfer and allows the heat exchanger to be cleaned from the front.
• Rear flue outlet – allows the flue connection to be routed directly to the chimney.
• Secondary and primary air intake – air is supplied through openings to ensure complete fuel combustion. The amount of air can be adjusted using slides.
• Smoke flap – enables effective removal of smoke from the combustion chamber according to the user's needs.
• Ceramic plates – installed in the combustion chamber, they increase the process temperature and support the combustion of particles rising above the combustion bed.
• Buffer tank – an additional component that provides appropriate operating conditions for the boiler. Excess heat can be stored in the buffer tank, from which the heating system draws heat according to the current demand.

Simple Operation and Control

SEMAX BASIC uses mechanical solutions to control boiler operation. The draught regulator regulates the air supply to the combustion chamber, while the mechanical bimetal thermometer allows the temperature of the heating medium to be monitored.

This solution enables simple adjustment of the boiler operation and adaptation of the wood gasification process to the current requirements of the heating system.

Buffer Tank

A buffer tank is a required component of the SEMAX BASIC boiler installation. It is not included as standard equipment and is not included in the boiler price.

The use of a buffer tank allows the boiler to operate at the appropriate output, while excess generated heat is stored in the tank. The heating system can then draw the stored thermal energy according to the current demand.

Technical Specifications

Emissions and Efficiency

Certificates and Classification

Dimensions

Key Features of SEMAX BASIC

• 4 output variants: 15, 20, 30 and 40 kW,
• boiler designed for gasification of piece firewood,
• Class 5 boiler,
• compliance with EcoDesign requirements,
• A+ energy efficiency class,
• listed on the ZUM List for all output variants,
• mechanical draught regulator,
• mechanical bimetal thermometer,
• horizontal shelf-type convection channels,
• turbulators in the convection channels,
• ceramic plates in the combustion chamber,
• primary and secondary air adjustment,
• smoke flap,
• rear flue outlet,
• buffer tank required as part of the installation.

SEMAX BASIC 15–40 kW is a series of wood gasification boilers designed for central heating systems. The availability of four output variants – 15, 20, 30 and 40 kW – makes it possible to select a boiler according to the requirements of a specific building. The boiler design incorporates a gasification chamber, ceramic combustion plates, convection channels and turbulators, while the required buffer tank allows excess thermal energy to be stored.

Does the SEMAX BASIC boiler require a buffer tank?

Yes. The SEMAX BASIC boiler may only be installed in a heating system together with a buffer tank. The buffer tank is not included in the boiler price. Its purpose is to store excess thermal energy generated during boiler operation.