Brunner Masonry Fireplace Set BSG-01 with MSS

Brunner Masonry Set BSG-01 with MSS

Brunner System Grundofen BSG 01 with MSS – Storage Heater with Large Viewing Window

The Brunner System Grundofen BSG 01 with MSS (Modular Storage Heater) combines traditional storage heat with modern technology. A generous viewing window, select storage stones, and high-quality cladding ensure long-lasting warmth and a cozy ambiance – ideal for living spaces where warmth and design are equally important.

Advantages

• Long-lasting radiant heat thanks to modular storage mass (MSS) – cozy warmth long after the burnout.
• Large viewing window so the fire remains visible for longer.
• Solid construction with high storage capacity – solid & durable.
• Flexible options: High or low versions are available, with storage mass "on top" or "off-the-shelf."
• High-quality materials: Fireclay firebox, modular storage stones, solid cladding.
• Made in Germany / Brunner quality, standard compliance, and manufacturer service.

Technical features & specifications
Feature Value / Description
Output approx. 2.2 kW in storage mode (heating once or twice daily) 1)
Firing output approx. 31.6 kW with MSS mounted
Combustion time approx. 2 hours per filling
Heat output / storage time up to approx. 12 hours 2)
Fuel: Logs (well-seasoned)
Log length 33-50 cm (depending on the variant)
Weight including cladding approx. 1,261 kg (mounted variant, high)
Dimensions (W × H × D) e.g. B. approx. 1100 × 2120 × 760 mm (surface-mounted, tall version)
Door size height x width approx. 510 × 670 mm
Door size front/combustion chamber GOT 51/67-ZL revolving door / GOF 66×42 combustion chamber
Combustion chamber construction: fireclay, natural tone, grooved look
Flue pipe connection Ø 180 mm; connection at the top or rear (depending on the version)
External combustion air connection, Ø approx. 160 mm; front or bottom depending on the version
Standard/Certifications: EN 15250 Storage fireplaces; German 1st/2nd BImSchV; other national standards (Austria, Switzerland, etc.)

Set components:

• GOT 51/67 ZL revolving door, single-glazed glass
• Black frame
• GOF 66x42
• 90° MSS bend with double-walled inner pipe
• 4 MSS bends (4 pieces)
• 180 mm diameter MSS burnout block with seal
• 10 cm MSS modular storage block with shut-off valve
• 90° MSS bend with top plaster cover
• 90° MSS bend with left plaster cover
• 20 cm MSS modular storage block
• 11 MSS steel band rings
• 2 MSS adhesive bags (Thermofix 1000)
• MSS connecting block
• BSG-01 high thermal concrete cladding

Notes:
1) Average system heat output (waste heat during storage) with fuel quantity for the first/second burn-up
2) Time from ignition to reaching 25% of the maximum surface temperature relative to room temperature

Quality characteristics of the cladding components with a concrete look (exposed concrete class 2-3)
Dimensional tolerances of the cast components
Straightness: +/- 2 mm/m
Length/Width/Thickness: +/- 2 mm
Squareness: +/- 2 mm
Flatness: +/- 2.5 mm
Surface finish to the visible side
Texture: Closed and largely uniform; repairs with color changes and hairline cracks are permitted.
Porosity: Max. three holes with a diameter of <10 mm and a depth of <10 mm (reference area 100x100 mm)
Color: Uniform, extensive light/dark discoloration and cement haze are permitted; No rust or dirt stains, and no uneven fill layers.
Note: Color variations (e.g., extension rings) can be adjusted with a glaze-like application (recommendation: DecoLasur Matt tinted in Schiefer 16, manufactured by Caparol).
The BRUNNER touch-up kit (item no. 900300) can be used to make repairs to the cladding components.