What needs to be done before installation: 1. The construction of the building envelope is completed, all obstacles and sundries have been removed, and the ground sundries have been removed! 2. When installing the air duct of the purification system, the floor of the installation components inside the building has been prepared, and the concrete on the wall has been leveled. It must be carried out under the condition that the room is free of dust or dust-proof measures. 3. The auxiliary materials at the installation site must be complete, and there must be quality and technical guidance from construction technicians. Precautions for the installation of air ducts: 1. It is strictly forbidden for other pipelines to pass through the air duct. 2. The air duct installed in the flammable and explosive environment should be well grounded, and the air duct passing through the living area or production area must be installed tightly and not Device air duct interface. 3. The fixing of the outdoor vertical air duct shall not be connected with the lightning rod or the lightning protection facilities of the house. 4. The installation of air ducts must comply with the following technical regulations: ① The configuration of the connection between air ducts and ventilation equipment and accessories shall not reduce the connecting pipes of the connecting parts. ②The hanger can not be set at the air outlet, air valve, inspection door and automatic control mechanism, and must not be fixed on the flange to avoid the deformation of the air duct affecting the function of the air duct. ③The installation of the hanger must comply with the corresponding installation regulations. The suspended air ducts and components should be provided with fixed points to prevent swinging, such as fixed brackets, supports, etc. The location and number of fixed points should be determined according to the system conditions. Fabric duct ventilation duct ④ Flange padding and thickness According to the different conveying air temperature, the material selected is also different. ⑤When the air duct and components pass through the wall or roof, a rain cover should be installed. When the air duct passing through the roof exceeds 1.5m, the cable should be pulled. The cable should be galvanized or wire rope. The cable should not be fixed on the air duct flange. , It is strictly forbidden to pull on the lightning rod or lightning net. ⑥ The installation of the flexible short pipe should be moderately tight and not twisted. The length of the flexible metal or non-metal flexible air pipe installed in the ventilation duct should not exceed 2m, and there should be no dead bends and slumps. ⑦The support and hanger of the thermal insulation duct should be located outside the thermal insulation layer, and the thermal insulation layer should not be damaged.
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