Before the installation of the ventilation duct, check whether the size, elevation and the position of the calibrated supports and hangers of the air duct through the floor and wall holes meet the requirements. The spacing between hangers is 3m. For pipes less than 3m long, one hanger shall be set at both ends. In order to prevent the cold bridge from adding skids between the air duct and the hanger, the thickness of the skids is the same as that of the insulation layer.

垂直風管每層不少于一個支架，層高大于4m時支架不少于2個。

Each layer of vertical air duct shall have at least one support, and when the layer height is greater than 4m, there shall be at least two supports.

風管安裝前，必須進行預組裝和檢查，才能按編制順序安裝到位。

Before the installation of air duct, pre-assembly and inspection must be carried out before it can be installed in place according to the preparation sequence.

在安裝風道和零件之前，管道內外的灰塵和污垢，用聚乙烯薄膜密封兩端，保持管道持管道內部清潔。包裝好的風道及其部件安裝前不得拆卸。

Before installing the air duct and parts, remove the dust and dirt inside and outside the pipe, seal both ends with polyethylene film, and keep the inside of the pipe clean. The packaged air duct and its components shall not be removed before installation.

風道支吊架應避免在墻洞或樓板上安裝風口、風閥、法蘭、檢查門等部件的位置，支吊架與風道之間應設置墊木。

Air duct supports and hangers shall avoid the installation of air vents, air valves, flanges, inspection doors and other components on wall openings or floors. Pads shall be set between the supports and hangers and the air duct.

消聲器安裝的方向保證正確，且不得損壞和受潮。消聲器單獨設置支架，避免風管承重。

The muffler shall be installed in the correct direction without damage and damp. The muffler shall be provided with a separate support to avoid the load bearing of the air duct.

防火閥安裝前，檢查其型號和位置是否符合設計要求、有無產品合格證，防火閥易熔片要迎氣流方向安裝，為防止易熔片脫落，易熔片在系統安裝后再裝，安裝后做動作試驗，另外防火閥安裝時單獨設支架。

Before the installation of the fire damper, check whether its model and position meet the design requirements, and whether there is a product certificate. The fusible piece of the fire damper should be installed in the direction of the airflow. To prevent the fusible piece from falling off, the fusible piece should be reinstalled after the installation of the system, and the action test should be conducted after the installation. In addition, the fire damper should be installed with a separate support.

排煙閥、排煙口和手動控制裝置（包括預埋導管）按設計要求安裝。排煙閥安裝后，進行動作試驗，檢查其手動操作、電動操作是否靈敏可靠，閥體是否緊密關閉。

Smoke exhaust valve, smoke outlet and manual control device (including embedded conduit) shall be installed according to design requirements. After the smoke exhaust valve is installed, conduct action test to check whether its manual operation and electric operation are sensitive and reliable, and whether the valve body is closed tightly.

對于進排風機，復合鋁箔柔性玻璃纖維軟管用于空調風管進出口與風管的連接，負壓側軟管長度為l00mm，正壓側軟管長度為150mm。

For the inlet and exhaust fans, the composite aluminum foil flexible glass fiber hose is used for the connection between the inlet and outlet of the air conditioning air duct and the air duct. The length of the hose on the negative pressure side is 100mm, and the length of the hose on the positive pressure side is 150mm.

安裝風口時，確保風口與風管之間的嚴密、牢固連接；風口邊框與建筑裝飾表面緊密貼合；安裝的風口表面確保其平整不變形，靈活調整。

When installing the air outlet, ensure the tight and firm connection between the air outlet and the air duct; The frame of the air outlet is closely connected with the architectural decoration surface; The surface of the installed air outlet shall be smooth and flexible.

安裝過程中振動和噪音的預防振動和噪音的預防是安裝過程中一個，安裝過程中風管的振動和噪音的預防主要從以下幾個方面著手：

The prevention of vibration and noise during installation is a key point in the installation process. The prevention of vibration and noise during installation mainly starts from the following aspects:

在空調機組中，安裝連接在風機和風道上的軟接頭，以達到適當的松緊度，避免由于軟接頭過松而引起的噪音和振動，減少了進出風口的面積。

In the air conditioning unit, install the flexible joint connected to the fan and air duct to achieve proper tightness, avoid noise and vibration caused by loose flexible joint, and reduce the area of air inlet and outlet.

在每個系統風管的轉彎處，與空調設備和風口的連接處固定支架，以防止風管振動。

Fix the support at the corner of each system air duct and the connection with the air conditioning equipment and the air outlet to prevent the air duct from vibration.