1. The installation of air duct shall meet the design requirements

建筑結構預留孔洞位置應正確，孔洞應在風管外100毫米以上。建筑結構風管與風管的連接接口應沿氣流方向插入，并采取密封措施。風管與風機、風機外殼、空氣處理器等設備連接的地方，應設置長度應為150 ~ 300 mm的柔性短管或按設計規定設置。柔性短管不應用作調準和調平減壓連接管。位于結構變形縫處的柔性短管長度應大于變形縫寬度100毫米以上，輸送冷凝水或水汽的風管安裝坡度應符合設計要求。風管底部不應設置縱向接頭，風管接頭應密封。

The position of the reserved holes in the building structure shall be correct, and the holes shall be more than 100mm outside the air duct. The connection interface between the building structure air duct and the air duct shall be inserted along the air flow direction, and sealing measures shall be taken. The flexible short pipe with a length of 150~300 mm shall be set at the place where the air duct connects with the fan, fan housing, air processor and other equipment, or set according to the design regulations. Flexible stub pipes shall not be used as alignment and leveling pressure reducing connecting pipes. The length of the flexible short pipe at the structural deformation joint shall be more than 100mm wider than the width of the deformation joint, and the installation slope of the air duct conveying condensate or water vapor shall meet the design requirements. Longitudinal joints shall not be set at the bottom of the air duct, and the air duct joints shall be sealed.

2、管道法蘭的連接

2. Connection of pipe flange

對于襯墊材料，不得使用厚紙、紙板、石棉繩、鉛麻和油氈紙。墊圈材料應盡量減少接頭。墊片材料的接頭應采用梯形或榫頭連接，并應粘接牢固。法蘭被均勻壓縮后，墊片材料的寬度應與風道內壁齊平。風管與潔凈室天花板、隔墻和其他圍護結構之間的接縫應緊密。

For gasket materials, thick paper, cardboard, asbestos rope, lead hemp and linoleum paper shall not be used. Gasket material shall minimize joints. The joints of gasket materials shall be connected by trapezoid or tenon, and shall be firmly bonded. After the flange is uniformly compressed, the width of the gasket material shall be flush with the inner wall of the air duct. Joints between air ducts and clean room ceilings, partitions and other enclosures should be tight.

3、風管系統應有良好的接地措施

3. The air duct system shall have good grounding measures

穿過輔助生產室要嚴密，不得設置接口。輸送空氣溫度高于80℃時，風管應按設計規定采取保護措施。風管測量孔應設置在便于測量和觀察的位置；天花板風管上的測量孔應留出相應位置的活動天花板或檢查門。當隔熱風管采用金屬法蘭和金屬加強件時，外露部分應采取措施防止冷橋冷凝。

Passing through the auxiliary production room shall be tight and no interface shall be set. When the conveying air temperature is higher than 80 ℃, protective measures shall be taken for the air duct according to the design provisions. The air duct measuring hole shall be set at the position convenient for measurement and observation; The measuring hole on the ceiling duct shall be reserved with a movable ceiling or inspection door at the corresponding position. When metal flanges and metal reinforcements are used for heat insulation air duct, measures shall be taken for exposed parts to prevent cold bridge condensation.

4、風管系統應檢查是否漏氣

4. The air duct system shall be checked for air leakage

這是安裝空調的環節，但也是一個重要的環節，所以業主在接受空調時一定不能忽視這一環節，在風管安裝完成后，應仔細檢查，防止漏風。

This is the link of installing the air conditioner, but it is also an important link, so the owner must not ignore this link when accepting the air conditioner. After the installation of the air duct, it should be carefully checked to prevent air leakage.

5、風管維護常識

5. Common sense of air duct maintenance

風管安裝后，暫時未安裝的風管開口、過濾器開口等開口部位應及時用塑料布妥善包裹，防止現場灰塵進入清潔后的風管，造成風管二次污染。

After the installation of air duct, the openings of air duct and filter that are not installed temporarily shall be properly wrapped with plastic cloth in time to prevent dust from entering the cleaned air duct and causing secondary pollution of the air duct.