Ventilation duct installation precautions

 In industrial and civil building ventilation engineering and air conditioning projects, ventilation pipe installation is a laborious and time-consuming work, there is no ventilation ducts, ventilation system is no way to normal operation. Ventilation ducts are made of metal or non-metallic materials.
Ventilation ducts are generally made in the field of installation.
  Ventilation pipe production and installation, the first design drawings should be, according to the layout of the ventilation duct to the scene. Ventilation ducts before construction, the construction unit should consult with the design staff to coordinate ventilation ducts and other pipeline pipeline position to. Construction and civil engineering and other professional work should complement each other. Ventilation ducts used in the production and installation of the plates, profiles, and other major finished materials should be consistent with the design and related products, the provisions of the existing national standards, materials approach should be the relevant national standards for acceptance. Ventilation pipe installation, according to the scene, a method is: all ventilation pipes in the ground made, and then connected into one, the use of lifting methods in place. Another way is to place the ventilation ducts section by section on the brackets, section by section. Installation sequence is generally the first trunk, branch pipe. The installation of the riser is generally done from bottom to top. After installation in place by leveling leveling, to meet the design requirements.
   Ventilation duct installation should pay attention to the problem is:
1, ventilation duct installed in the bracket, the bracket should be set.
2, ventilated duct if piercing the roof outside the part, should be set up rain cover.
3, ventilated duct with no Lanlian, the interface should be tight firmly. Ventilation Duct connection two plane should be straight, not dislocation and distortion.
4, easy to produce condensate delivery ventilation ducts, installation gradient should be designed. The bottom of ventilation duct can not have vertical seam, if there must be a joint, should be sealed.
Ventilation pipe installation is completed, should be rigorous testing, such as abnormal circumstances,
Ventilation pipe production, installation, testing and testing, is a coherent project, so safe and applicable, economical and reasonable to facilitate the construction, to ensure the quality of ventilation ducts.