How does this product work?
The intumescent fire damper comprises of a rigid galvanised steel framework that supports a series of evenly spaced reinforced parallel slats that contain an intumescent material. Under normal circumstances the vent will allow air to pass freely but a sudden increase in temperature, resulting from the presence of hot flames or gases, will cause the slats to expand to many times their original thicknes. This expansion means the slats fuse together to form a stable fire resistant barrier, which restricts fire and limits the spread of hot smoke and toxic gases.
Ventilation through Ducting
Designers recognise the need for buildings to be well ventilated for the health and comfort of occupants. Frequent changes of air are required to flush out airborne infections, and warm and cool air needs to be circulated to maintain a comfortable temperature.
Experience has shown that ductwork can, in the event of fire, provide a conduit for fire, as well as the hot smoke and toxic gasses it produces.
As HVAC systems frequently penetrate fire compartment boundaries, it is these points that must be treated in an approved manner to preserve the integrity of the fire compartment.
The solution is to install an intumescent fire damper into the duct at the point where it penetrates the fire resistant construction. This will effectively limit the spread of fire and restrict the passage of hot smoke and toxic gasses.
Manufactured in Sydney to the highest quality, Lorient LVH44 intumescent fire dampers are designed and approved for use in a host of different applications, providing a range of proven versatile
solutions all in accordance with the latest Australian standards.
Standards & Regulatory Requirements
NCC BCA 2016 Section C3.15 (b)
This section requires that ventilation and air-conditioning ducts or associated equipment are installed in accordance with AS 1668.1.
AS1530.4 2014: Fire Resistance Tests on Elements of Construction
This standard provides methods for determining the fire resistance of various elements of construction when subjected to standardised range of fire exposure conditions.
Product must always be installed in accordance with manufacturers published installation details.