What are the specific requirements for the installation location of the fire damper, and how to ensure correct installation?
Publish Time: 2025-02-26
Fire damper is a vital component of the building fire protection system, and its correct installation is of great significance to ensure building safety. This article will introduce in detail the installation location requirements of the fire damper and how to ensure correct installation.Fire damper is mainly installed on the air ducts of the ventilation and air conditioning system, especially near the fire partition. Specific requirements include:Crossing the fire partition: When the air duct crosses the fire partition, a fire damper must be installed at the crossing to prevent the spread of fire.Crossing the important room partition wall and floor slab: For air ducts that cross the important or fire-hazardous room partition walls and floor slabs, fire dampers are also required.Both sides of the expansion joint: Fire dampers should also be installed on both sides of the expansion joint that crosses the fire partition to ensure that smoke can be effectively isolated in the event of a fire.The intersection of the vertical air duct and the horizontal air duct: Fire dampers are also required on the horizontal pipe section where the vertical air duct and the horizontal air duct on each floor intersect. However, it should be noted that when the ventilation and air conditioning systems of each fire compartment in the building are independently set up, the intersection of the horizontal air duct and the vertical main pipe may not be equipped with a fire damper.In addition, for the vertical exhaust ducts in the bathrooms, toilets and kitchens of public buildings, if no backflow prevention measures are taken, fire dampers should be installed on the branch pipes. The exhaust ducts in the kitchens of public buildings should also be equipped with fire dampers at the branch pipes connected to the vertical exhaust ducts.In terms of ensuring correct installation, the following points need to be noted:Choose a suitable location: The fire damper should be installed in the air duct close to the wall, but at a certain distance from the wall, usually not more than 20 cm, to ensure that it can work properly and is easy to maintain.Set up separate supports and hangers: The fire damper should be equipped with separate supports and hangers to avoid pipe deformation affecting the performance of the valve.Pay attention to the installation direction: When installing the fire damper, pay attention to the upper and lower airflow directions of the blades, and do not invert them. At the same time, ensure that the fuse is installed on the side facing the more dangerous fire.Convenient maintenance and repair: When the fire damper is concealed, a maintenance port should be set at the installation location for easy maintenance, and the size of the maintenance port should meet the maintenance requirements.In summary, the correct installation of the fire damper is crucial to ensure the fire safety of the building. During the installation process, the appropriate location should be selected in strict accordance with the specifications, and attention should be paid to the installation details to ensure that the fire damper can play the greatest role.
