Air/flue gas chimney – independent of ambient air
The LB LAS-FB is a high-quality 3-shell lightweight chimney with annular gap for the combustion air supply by outlet.
It is approved for the connection of ambient-air-independent stoves, heating inserts, etc. and is recommended for low-energy and passive houses, especially in combination with kitchen hoods and controlled living-space ventilation.
The concentric modular system allows connection from all four sides. The 30 mm heat insulation keeps heat losses low and ensures good draught and safe combustion air supply.
Due to the simple plug-in technique of the prefabricated shaft elements with tongue and groove, the LB LAS-FB is very quick and easy to install.
The minimal external dimensions and the dry construction method allow flexible design.
With its low weight and smooth surface, the LB LAS-FB is ideally suited for buildings in timber post and beam construction as well as for retrofitting.
- Air Exhaust Chimney for Indoor Use
- Dry construction
- Practical basic packages
- Outer shell L90 made of fibersilicate fire protection panels
- Thermal resistance 0.68 sqm K/W
- Inner pipe stainless steel 1.4571/1.4404 in 0.6 mm
- Inner diameter 130, 150, 180, 200 mm
- Factory slip-on cowl available as weather protection
- Installation height from 15 m with load transfer
- Overhang up to 1.5 m above roof without anchoring with rafter support
- 50 mm distance to combustible building materials (wood)
- Ambient air-independent: e.g. connection of wood-burning stoves, tiled stoves, etc.
- High safety: tested system with DIBt approval
- Suitable for low-energy or passive houses
- Concentric modular system: easy selection and planning
- Combustion air connection: possible from all 4 sides
- Low weight: quick assembly. Generally, no structural measures such as foundations are required.
- Minimal size: little space required, flexible installation next to the fireplace
- Optimum fire protection: safety through high fire resistance class (LA90)
- High surface quality: fast interior fitting
- Fast assembly: rapid construction progress due to lightweight elements up to 1.20 m
- Stainless steel inner pipe with 30 mm insulation shell: fast heating, good draught and safe combustion air supply
- Special designs: on request, e.g. as double shaft system possible
