Stove made of steel
Bonn Steel
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.
- Heat release
- up to 9 h
- Nominal heat output
- 7.9 kW
- Efficiency
- 81 %
Bonn Steel, Stove made of steel
Why the Bonn Steel
The Bonn Steel in detail
Wood or pellets, no electricity
With KO2 S or KO2 XL you can also heat with pellets – no fan, no power connection.
KO2 XL: 7.5 kg per filling
OptionalDetails on our pellet systemWarmth that lasts
Heat continues to be released for hours after the fire has burned down.
Burn time up to 5 h · heat release up to 9 h
Combustion air from outside
The external air connection supplies combustion air directly from outside.
Output for your room
Nominal heat output 7.9 kW, space heating capacity 70–250 m³.
Values from the technical data. Heat release depends on factors such as room, insulation, fuel and operation.
| Value | Firewoodstandard | Pellets KO2 Soptional · 3.8 kg | Pellets KO2 XLoptional · 7.5 kg |
|---|---|---|---|
| Nominal heat output | 7.9 kW | 7.5 kW | 11 kW |
| Efficiency | 81 % | 87 % | 85 % |
| Space heating capacity | 70–250 m³ | 50–150 m³ | 70–250 m³ |
| Fuel | 2.48 kg/h | 3.8 kg | 7.5 kg |
| Burn time | up to 5 h | up to 2.5 h | up to 5 h |
| Heat release | up to 9 h | up to 7 h | up to 9 h |
| Flue gas temperature | 265 °C | 180 °C | 230 °C |
| CO (13 % O₂) | ≤ 1250 mg/m³ | 1166 mg/m³ | 880 mg/m³ |
| Dust (13 % O₂) | ≤ 40 mg/m³ | 36 mg/m³ | 30 mg/m³ |
Values from the technical data. Pellet system inserts are optional accessories. Heat release depends on factors such as room, insulation, fuel and operation.
- External dimensions
- H 106 × W 65.5 × D 56.5 cm
- Total weight
- 150 kg
- Firebox
- H 30 × W 37 × D 29 cm
- Viewing window
- H 42 × W 34 cm
- Fire door
- H 58 × W 50 cm
- Fireclay
- 26 kg
Installation and connection
- Distance to combustible materials
- rear 30 cm · side 20 cm · front 100 cm
- Flue pipe connection Ø 15 upwards ↑
- Outside air connection Ø 10 horizontal → or vertical ↓ possible (Please specify when ordering)
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)