The ATTACK SLX 40 LAMBDA This is a high-performance wood gasifier with a nominal output of 40 kW and integrated lambda control for precise, low-emission combustion of logs. It is ideally suited for large single-family homes, apartment buildings, or commercial properties with increased heating requirements. Automatic air control ensures consistently high efficiency and convenient operation.

Highlights/Advantages

⭐ 40 kW nominal power – suitable for large residential and commercial buildings
⭐ Lambda sensor integrated – automatic adjustment of air supply
⭐ Efficiency up to 89.3% – efficient fuel utilization
⭐ Certified according to EN 303-5:2012 – tested emission values
⭐ Turbulator system with cleaning lever – easy maintenance

ATTACK SLX 40 LAMBDA wood gasifier 40 kW

Area of ​​application & Target audience

The ATTACK SLX 40 LAMBDA is a Hot water boiler for solid fuels (wood) with automatic air control via lambda sensor. It is particularly suitable for:

• large detached houses

• Apartment buildings

• commercial buildings

• Renovation projects with sufficient chimney draft

Preferred fuels are Logs with a moisture content ≤ 25%.

Everyday benefits

The integrated lambda control continuously measures the residual oxygen content in the exhaust gas and automatically adjusts the air supply. This results in:

• optimized combustion quality

• reduced fuel consumption

• stable power output

• low emissions

Even with fluctuating wood quality, combustion remains efficient and controlled.

Technology & equipment

• Boiler type: Wood gasification hot water boiler

• Power: 40 kW

• Lambda sensor for automatic air control

• Fan-assisted combustion

• Turbulators in the tube heat exchanger

• Thermal safety device required

• Maximum operating pressure: 2.5 bar

• Minimum chimney diameter: 150 mm (200 mm recommended)

• Recommended chimney draft: 23–30 Pa

To ensure a long service life, a return temperature above 65 °C must be maintained. Recommended boiler temperature: 80–85 °C.

Efficiency & Environment

The ATTACK SLX 40 LAMBDA meets the requirements of EN 303-5:2012 for boilers of fuel class A.

Measurement values ​​according to the information sheet:

• Nominal heat output: 40.3 kW

• Part load (30%/50%): 17.8 kW

• Efficiency at rated power: 83.0%

• Efficiency at 30%/50%: 84.5%

Lambda technology supports clean and stable combustion.

compatibility & System integration

For efficient and standards-compliant operation, the SLX 40 LAMBDA is typically combined with:

• Buffer storage

• Return flow booster/mixing device

• Thermal safety device

• Safety valve

• Expansion vessel

Suitable Buffer storage tanks, return temperature boosts and safety groups You can find them in our product range at gemashop.de.

Technical data

Scope of delivery

• ATTACK SLX 40 LAMBDA wood gasifier

• User manual

• Assembly instructions

Assembly & Safety instructions

Installation and commissioning must only be carried out by a qualified specialist company.

Important instructions:

• Thermal safety device absolutely necessary

• Return temperature boost necessary to prevent condensation

• Compliance with chimney requirements

• Regular cleaning of ash box, turbulators and heat exchangers

The warranty may be limited if the installation is improper.

FAQ

1. What does the lambda control do?
It measures the oxygen content in the exhaust gas and automatically regulates the air supply.

2. What is the power output of the SLX 40 LAMBDA?
The nominal heat output is 40.3 kW.

3. Which fuel is permitted?
Firewood with a maximum moisture content of 25%.

4. Is a buffer storage tank necessary?
A buffer storage tank is recommended for efficient operation.

5. What is the maximum operating pressure?
2.5 bar.

6. How often is cleaning required?
Empty the ash box daily, and clean the heat exchanger regularly according to the operating instructions.

Conclusion

The ATTACK SLX 40 LAMBDA 40 kW Combines high heating output with modern lambda control. An efficient and convenient solution for sustainable wood-fired heating in large residential or commercial buildings. Order now and benefit from precise combustion control.