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The Bonn combination stove impresses with its simple, timeless design and a wide selection of elegant cladding options. You can choose between steel, stone, or ceramic – perfectly matched to your living style.
For maximum flexibility, the Bonn can be operated either with firewood or with the power-free pellet system inserts KO2 S and KO2 XL.
Bonn Steel, Stove made of steel
The electricity-free pellet system by Max Blank
One stove.
Two fuels.
Your Bonn Steel – fired with logs or with wood pellets. For pellet operation, a pellet system insert is placed in the combustion chamber. No electricity required.
- No power connection needed for pellet operation
- No electricity
- Pellets per filling (KO2 XL)
- 7.5 kg
- Heat release (KO2 XL)
- up to 9 h
- Nominal heat output with logs
- 7.9 kW
- Burning time with logs
- up to 5 h
- Heat release with logs
- up to 9 h
Values according to the technical data of the model.
Pellet firing made easy – without electricity
The video shows how a pellet system insert works in the combustion chamber.
Suitable for Bonn Steel:
Data and facts
Technical data
| measurements (cm) | H x B x T 106 x 65,5 x 56,5 cm |
| combustion chamber | H x B x T 30 x 37 x 29 cm |
| fire glass | H x B 42 x 34 cm |
| fire door | H x B 58 x 50 cm |
| total weight | 150 kg |
| chamotte bricks | 26 kg |
Data for firewood
| nominal heat output | 7,9 kW |
| efficiency | 81% |
| heating capability | 70 - 250 m³ |
| amount of fuel | 2,48 kg/h |
| fire duration | up to 5 h |
| heat release | up to 9 h |
| flue gas flow volume | 8,45 g/s |
| exhaust °C (nozzle) | 265 °C |
| min/max feed press. | 12 / 15 Pa |
| CO (13%O2) | ≤ 1250 mg/m³ |
| dust (13%/O2) [mg/m] | ≤ 40 mg/m³ |
| NOx (13%O2) | ≤ 200 mg/m³ |
| OGC (CxHy) (13%O2) | ≤ 120 mg/m³ |
Data for Pellet System Insert KO2 S
| nominal heat output | 7,5 kW |
| output range | 7,5 - 5 kW |
| efficiency | 87% |
| heating capability | 50 - 150m³ |
| amount of fuel | 3,8 kg |
| fire duration | up to 2,5 h |
| heat release | up to 7 h |
| flue gas flow volume | 8,97 g/s |
| exhaust °C (nozzle) | 180 °C |
| min/max feed press. | 12 / 15 Pa |
| CO (13%O2) | 1166 mg/m³ |
| CO (13%O2) | 0,093 % |
| dust (13%/O2) [mg/m] | 36 mg/m³ |
| NOx (13%O2) | 109 mg/m³ |
| OGC (CxHy) (13%O2) | 54 mg/m³ |
Data for Pellet System Insert KO2 XL
| nominal heat output | 11 kW |
| output range | 11 - 8,5 kW |
| efficiency | 85% |
| heating capability | 70 - 250 m³ |
| amount of fuel | 7,5 kg |
| fire duration | up to 5 h |
| heat release | up to 9 h |
| flue gas flow volume | 10,74 g/s |
| exhaust °C (nozzle) | 230 °C |
| min/max feed press. | 12 / 15 Pa |
| CO (13%O2) | 880 mg/m³ |
| CO (13%O2) | 0,070 % |
| dust (13%/O2) [mg/m] | 30 mg/m³ |
| NOx (13%O2) | 110 mg/m³ |
| OGC (CxHy) (13%O2) | 41 mg/m³ |
Distances to combustible walls / components
| wall distance, rear | 30 cm |
| wall distance, side | 20 cm |
| distance to the front | 100 cm |
- Flue pipe connection Ø 15 upwards ↑
- Outside air connection Ø 10 horizontal → or vertical ↓ possible (Please specify when ordering)