The IBC GK-7K eco 30 This is a modern wood gasification solid fuel boiler with a nominal heat output of 30 kW. With energy efficiency class A+, an efficiency of over 91% and integrated lambda control, it offers an efficient and low-emission solution for heating single-family and multi-family homes.

Ideal for operators who rely on natural firewood as a sustainable fuel.

Highlights/Advantages

⭐ 30 kW nominal heat output – suitable for medium to large residential buildings
⭐ Efficiency 91.44% (full load) – high energy efficiency
⭐ Energy efficiency class A+ – EEI 119
⭐ Lambda sensor & Induced draft fan – optimized, clean combustion
⭐ Eligible for BAFA funding – according to manufacturer's specifications

IBC GK-7K eco 30 wood gasifier

Area of ​​application & Target audience

The GK-7K öko 30 is designed for heating water in closed central heating systems. It is suitable as a main boiler in standalone operation or in combination with oil, gas or heat pump systems.

With a power output of 30 kW, it reliably covers typical single-family homes as well as larger living spaces.

According to the Federal Immission Control Ordinance (BImSchV), a buffer storage tank with a minimum of 55 liters per kW of heating output must be provided during installation (at least 1,650 liters for 30 kW).

Everyday benefits

The combination of primary and secondary blowers and a lambda probe enables controlled, efficient wood gasification. The high efficiency of 91.44% ensures very good fuel utilization.

With an annual space heating efficiency of 81%, the device meets the requirements of the EU Ecodesign Regulation.

Technology & equipment

The GK-7K öko 30 consists of a cast iron boiler body (6 sections) made of GJL-200 and is factory tested for leaks.

Features include:

• Boiler control with touchscreen

• Primary and secondary blowers

• Lambda sensor

• Exhaust gas temperature sensor

• Safety heat exchanger (required in closed systems)

• Connection flow/return 1 1/2"

• Flue pipe connection Ø 160 mm

The boiler is CE marked and complies with, among other things:

• EN 303-5:2012

• EU Regulation (EU) 2015/1187

• EU Regulation (EU) 2015/1189

Efficiency & Environment

The energy efficiency index (EEI) is 119, which places it in Energy efficiency class A+ This has been done.

Technical efficiency values:

• Efficiency (full load): 91.44%

• Annual space heating efficiency: 81%

• Exhaust gas temperature: 160-180°C

• Noise emissions: < 70 dB(A)

The approved fuel is untreated firewood according to EN ISO 17225-5 (class A1/A2) with 12–20% residual moisture.

compatibility & System integration

The GK-7K öko 30 is designed for closed heating systems with a maximum operating pressure of 3 bar.

The following are required:

• Safety heat exchanger

• Thermal safety device

• Return flow increase (min.70–72 °C)

• Draft regulator in the flue pipe or chimney

• Buffer storage tank according to the Federal Immission Control Ordinance (BImSchV)

Electrical connection:
AC 230 V/50 Hz
Maximum power consumption: 53 W

Technical data

Scope of delivery

• Wood gasifier GK-7K eco 30

• Boiler control

• Cleaning kit (brush and poker)

• Assembly instructions

• User manual

Accessories/Recommendation

For proper operation, we recommend:

• Buffer storage tank ≥ 1,650 liters

• Return flow boosting unit

• Thermal safety device

• Boiler safety group

• Train limiter

• Suitable flue pipe Ø 160 mm

Suitable system components can be found in the wood heating technology section at gemashop.de.

Assembly & Safety instructions

Installation must be carried out exclusively by a qualified specialist company in accordance with DIN EN 12828.

Before commissioning, the suitability of the chimney must be checked by the responsible chimney sweep.

The installation room must be equipped with a CO warning device.

The return temperature must be permanently above 55 °C, 70–72 °C is recommended via return temperature boost.

FAQ

1. Is the GK-7K eco 30 eligible for funding?
According to the manufacturer, the model is eligible for BAFA funding. The current funding guidelines apply.

2. Which fuels are permitted?
Natural firewood according to EN ISO 17225-5 (A1/A2).

3. What is the efficiency?
91.44% at full load.

4. What buffer tank size is required?
At least 55 liters per kW of heating output, so 1,650 liters for 30 kW.

5.What type of chimney connection does the boiler require?
Flue pipe connection Ø 160 mm, negative pressure operation.

6. What type of electrical supply is required?
230 V/50 Hz.

Conclusion

The IBC GK-7K eco 30 This is a high-performance wood gasifier with 30 kW output, high efficiency, and modern control technology. A robust, eligible solution for sustainable and economical wood heating.