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10 Tips for installing ductworks-Part One
1. Before installation, ensure that the basic engineering has been completed
The installation of the air duct must be carried out after the completion of these basic projects; the appearance quality inspection should be carried out before installation, and the dust on the inner and outer surfaces and the sundries in the pipe should be removed.
If it is not installed for the time being, it cannot be placed at random, and the nozzles should be wrapped with plastic cloth, and they should be stacked indoors according to the system number as much as possible. If conditions do not allow it to be stacked outdoors, attention should be paid to placing skids under the air duct, and there should be reliable protection against rain, wind, sand and sun exposure.
3. Clean the air duct
When cleaning the air duct, use a neutral detergent that does not corrode the surface of the board, does not produce dust after drying, and is not harmful to the human body. First wash it with cleaning solution, then clean it with clean water, and finally wipe off the water marks with a clean white cloth. If you don’t install it temporarily, you can also air dry it naturally, but after drying, you need to close the air outlet.
4. Ensure that the air duct is clean and tidy
Installers should wear clean work clothes, gloves and work shoes, etc. Cleaned, packaged and sealed air ducts and their parts must not be disassembled before installation. After the port sealing film is removed during installation, the joints are connected immediately; if the installation stops in the middle, the port should be re-sealed, so as to ensure the purification of the air conditioning system.
5. No other pipelines shall be laid in the air duct
For axial flow fans, electric heaters and other equipment installed in the ventilation duct system, protective insulation measures should be taken for the power lines. It is strictly forbidden to pull the fixed cable of the outdoor riser on the lightning rod or the lightning net. When the air duct passes through the wall or floor, it must not be installed in the wall or floor, and the distance from the wall should not be less than 200mm, and the distance from the floor should not be less than 150mm. When the air duct passes through the fire-proof and explosion-proof floor or wall that needs to be closed, a pre-buried pipe or protective sleeve with a wall thickness of not less than 1.6mm should be installed, and a non-combustible and harmless flexible material that is not harmful to the human body should be used between the air duct and the protective sleeve. Material blocked.
6. The air duct installation should meet the design requirements
The position of the reserved hole in the building structure should be correct, and the hole should be larger than the outer dimension of the air duct by more than 100mm. The connection interface between the air duct and the air duct of the building structure should be inserted along the direction of air flow, and sealing measures should be taken. Where the air duct is connected to the fan, fan box, air handler and other equipment, a flexible short pipe with a length of 150-300mm should be installed or according to the design requirements. The flexible short pipe should not be used as a different-diameter connecting pipe for alignment and leveling. The length of the flexible short pipe located in the structural deformation joint should be greater than the width of the deformation joint by more than 100 mm. The installation slope of the air ducts that produce condensed water or moist steam should be in accordance with the design requirements. The bottom of the air duct should not be provided with longitudinal joints, and the joints of the air ducts should be sealed.
7. Connection of air pipe flange
To seal the gasket, thick paper and cardboard, asbestos rope, lead linoleum silk and linoleum paper are not allowed. The joints of the gasket should be reduced as much as possible, and the joints of the gasket should be connected in a trapezoidal or mortise shape, and should be glued firmly. The width of the gasket after the flange is evenly compressed should be level with the inner wall of the air duct. The joints between the air duct and the clean room ceiling, partition wall and other enclosure structures should be tight.
8. The air duct system should have good grounding measures
It must be tight when passing through the auxiliary production room, and no interface is allowed. When the conveying air temperature is higher than 80°C, the air duct shall take protective measures according to the design regulations. The measurement hole of the air duct should be set at a position that is convenient for measurement and observation; for the measurement hole on the air duct in the ceiling, a movable ceiling board or inspection door should be reserved at the corresponding position. When metal flanges and metal reinforcements are used for thermal insulation ducts, measures to prevent cold bridge condensation must be taken at the exposed parts.
9. The air duct system should be checked for air leakage
This is the last link in the installation of the air conditioner, but it is the most important link, so the owner must not ignore this link when checking and accepting the air conditioner, and should check it carefully to prevent air leakage after the installation of the air duct is completed.
10. Common sense of air duct maintenance
After the air duct is installed, the exposed parts such as the air duct opening and filter opening that will not be installed temporarily should be properly wrapped with plastic cloth in time to prevent the dust from entering the cleaned air duct and causing secondary pollution in the duct.
The above is the whole content of the air duct installation. I hope it can help you. The air duct also plays a role that cannot be ignored in our life. You can first understand the relevant installation methods.
A pre-insulated duct making machine is an important tool to improve your duct making efficiency. There are many pre-insulated duct making machines in the market. Please make sure that you chooes the right pre insulated duct making machine for your ductworks. If you use a pre insulated duct making machine that is not user-friendly, you may end up spending more time for your pr-insulated duct making process.
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