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Fire protection design issues for air conditioners
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Air conditioning fire design issues

1   System setting rules

层,垂直风管应设置在管井内。 "High gauge": The air-conditioning system should be arranged horizontally in accordance with the fire protection zone, and it should not exceed 5 floors vertically. 层的条件:排风管设止回且各层设置自动喷水灭火系统。 Conditions for fresh air and exhaust ducts with more than 5 floors vertically: the exhaust ducts are non-return and each floor is equipped with a sprinkler system.

层,设置止回阀或防火阀的管道可以例外。 "Building regulations": The air-conditioning system should be arranged horizontally according to the fire zone, and it should not exceed 5 floors vertically. The exception is the pipeline with check valve or fire valve. The vertical air duct shall be installed in the pipe well.

2   Fire damper installation regulations ("building regulations" and "high regulations")

Pass through the fire zone;

Pass through the partition walls and floors of air-conditioned equipment rooms, important rooms and large rooms at risk of fire;

(Fire separation) Both sides of the deformation joint;

On the horizontal pipe section where the vertical duct and horizontal duct meet;

3   Fire insulation requirements for pipeline insulation materials

“高规”: "High-profile":

Air-conditioning ducts should be made of non-combustible materials: Corrosive medium ducts and soft joints can be made of non-combustible materials;

Insulation materials, sound insulation materials, and adhesives for air ducts and equipment should be made of non-combustible or non-combustible materials;

内的风管和电加热器前后0.8m的风管、穿过有火源或容易着火房间的风管应采用不燃材料保温。 Air ducts within 2 m on both sides of the firewall and deformation joints, and 0.8 m front and rear ducts of electric heaters, and ducts passing through a fire source or a room prone to fire shall be insulated with non-combustible materials.

"Building Regulations":

的难燃材料风管和设备保温材料、消声材料、粘结剂宜采用不燃材料,可用烟密度小于等于50的难燃材料; Air-conditioning ducts should be made of non-combustible materials. Exceptions: Corrosive medium ducts and flexible joints can be made of non-combustible materials. For large spaces, ducts with smoke-proof and fire-proof valves can be made of non-combustible material ducts with a density of 25 or less Non-combustible materials should be used for the equipment's insulation materials, sound-absorbing materials and adhesives, and non-combustible materials with a smoke density of 50 or less can be used;

内的风管、电加热器前后0.8m的风管、穿过有火源或容易着火房间的风管应采用不燃材料保温。 Air ducts within 2 m on both sides of the fire damper, 0.8 m ducts before and after the electric heater, and air ducts passing through a source of fire or a room prone to fire shall be insulated with non-combustible materials.

4   The problem of dual use of air-conditioning system and firefighting smoke exhaust system: it should not be used together !


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