Installation of air duct and components
The detachable interface and regulating valve of air duct and accessories shall not be installed in the wall or floor. Before the installation of air duct and accessories, the internal and external sundries and dirt shall be removed and kept clean.
The horizontal and vertical air ducts installed against the wall or column should adopt cantilever support or diagonal support. The horizontal air duct not installed against the wall and column should use the bottom hanger, the vertical air duct should use the hoop support, and the air duct b > 800mm should be equipped with double nuts. Anti sway support shall be set at the corner, top and end. The support shall not be set at the air outlet, valve, inspection hole and automatic control mechanism. The hanger should not be directly fixed on the flange.
The hoop support of rectangular air duct shall be close to the air duct. For example, the insulation air duct shall be provided with wood blocks soaked in asphalt with insulation thickness. The air duct hanger shall be straight, the thread shall be smooth, and the hanger rod splicing can be welded. The length shall not be less than six times the diameter of the suspender and shall be welded on both sides.