B⁴ Steel, ceramics and ceramics+
Design: Sebastian Herkner
Our latest fireplace B⁴ was designed by Sebastian Herkner, just like the B3 model. The B⁴ has a spacious combustion chamber with a large viewing panel, which gives you an unobstructed view of the beautifully calm burning fire. The B4 can be used in virtually any room thanks to its wide power range (6 kW, 8 kW and 10 kW). B⁴ Intuitive control and an extremely high build quality are given with any Bullerjan product
The B⁴ is available in three basic versions differing in look and function. Moreover, you have a wide range of interesting ways in which to adapt your B⁴ to your interior design.
THE HIGHLIGHTS
MAIN PRODUCT FEATURES
- Elegant timeless design by Sebastian Herkner
- Large combustion chamber with large viewing window and effective window washing system
- Three models available in distinctive different designs: Steel, Keramik, and Keramik+
- B⁴ Steel – very slim, in classic black
- B⁴ Keramik – elegant contemporary design, ceramic cover plate and / or tea tray optional
- B⁴ Keramik+ – Sebastian Herkner’s interpretation of a traditional design.
- The wide variety of colours and surface materials also allow for very modern configurations
- And the B⁴ Keramik+ with fireclay filling, is a compact storage stove with very high storage capacity (total weight: 326 kg)
- Individual design options through a wide choice of ceramic glazes and -surfaces
- Optional ceramic tea-shelf (also available for B⁴ steel)
- Choice between light or black cladding for the combustion chamber
- Optional steel door for the wood compartment
- Four height adjustors allow you to adjust the stove to uneven floors
- Flue connection either at the rear or on top of theB⁴
FUNCTION AND QUALITY – MADE IN GERMANY
- Self-closing and -locking door with large viewing window
- Simple control of the fire through precisely coordinated air supply regulation
- Extremely solid combustion chamber made of 4 mm thick teel
- Firebox lined with high-quality coloured vermiculite
- Potential wear parts, can be replaced even after years, if necessary
- External air supply connection (if required) behind or below
- High effiency factor of 82 %
- Energy Efficiency Class A+
- Warranty extension (total 5 years) to the stove body on registering the product
- Comprehensive service offering by the Bullerjan specialist dealers or Bullerjan customer service
TECHNICAL VARIATIONS
- Optional complete independence of room air (Raumluftunabhängig RLU) in accordance with DIBt at no extra costs making it suitable for low energy and passive houses with controlled ventilation system.
- Proven nominal heat output of 6, 8 and 10 kW
| Modell | B⁴ steel | B⁴ Keramik | B⁴ Keramik + | B⁴ Keramik + with fireclay filling |
|---|---|---|---|---|
| Depth | 45,0 cm | 45,0 cm | 45,0 cm | 45,0 cm |
| Width | 55,0 cm | 60,0 cm | 67,0 cm | 67,0 cm |
| Height | 125,0 cm | 125,0 cm | 125,0 cm | 125,0 cm |
| Total weight | 242 kg | 276 kg | 283 kg | 326 kg |
| Depth of combustion chamber | 34,5/35,0/41,0 cm | 34,5/35,0/41,0 cm | 34,5/35,0/41,0 cm | 34,5/35,0/41,0 cm |
| Exhaust gas nozzle | Ø 15 cm | Ø 15 cm | Ø 15 cm | Ø 15 cm |
| Air supply nozzle | Ø 10 cm | Ø 10 cm | Ø 10 cm | Ø 10 cm |
| Height centre exhaust gas nozzle rear ca. | 113,0 cm | 113,0 cm | 113,0 cm | 113,0 cm |
| Height centre air supply nozzle ca. | 14,3 cm | 14,3 cm | 14,3 cm | 14,3 cm |
| Distance rear wall / centre (top) exhaust gas nozzle | 14 cm | 14 cm | 14 cm | 14 cm |
| Distance to combustible materials to the rear | 30 cm | 30 cm | 30 cm | 30 cm |
| Sides beside the stove | 20 cm | 20 cm | 20 cm | 20 cm |
| Sides up to 40 cm in front of the stove | 50 cm | 50 cm | 50 cm | 50 cm |
| Front from viewing window | 120 cm | 120 cm | 120 cm | 120 cm |
| Bullerjan B4 Wertetripel bei 6 kW | Bullerjan B4 Wertetripel bei 8 kW | Bullerjan B4 Wertetripel bei 10 kW | ||
| Nominal heat capacity | 6 kW | 8 kW | 10 kW | |
| Exhaust gas mass flow rate at NHO | 6,5 g/s | 7,1 g/s | 8,0 g/s | |
| Mean exhaust gas temperature | 264 °C | 300 °C | 308 °C | |
| Delivery pressure | 12 Pa | 12 Pa | 12 Pa | |
| CO content (bez. 13 % O2) | 1250 mg/m3 | 875 mg/m3 | 1250 mg/m3 | |
| CO content (bez. 13 % O2) | 0,10 % | 0,07 % | 0,10 % | |
| NOx (bez. 13 % O2) | 24 mg/m3 | 25 mg/m3 | 29 mg/m3 | |
| NOx (bez. 13 % O2) | 148 mg/m3 | 140 mg/m3 | 120 mg/m3 | |
| OGC | 87 mg/m3 | 48 mg/m3 | 61 mg/m3 | |
| Efficiency | 82 % | 82 % | 82 % |