Folding roof fan:
1. The foundation of the roof fan installation must be higher than the roof surface, and the surface should be flat to prevent water leakage and water, and the anchor bolts must be pre-buried.
2. A 5mm rubber plate is placed between the fan base and the foundation to reduce vibration. The anchor bolts should be equipped with spring washers to prevent loosening during use.
3. The diameter of the exit of the roof fan can only become larger and can not be smaller. Finally, the insect net should be installed at the outlet. When the wind is out, the weather hat must be added. If it is snowing in winter, the date of freezing must be started frequently. Heavy snow blocked the fan outlet.
4. The roof fan and the air duct are connected by a hose (flexible material and not burning), the length should not be less than 200mm, and the pipe diameter is the same as that of the roof fan. In order to ensure that the hose does not appear to be distorted during the operation of the system, the tightness to be installed should be moderate. For the canvas hose installed on the suction side of the roof fan, it can be installed slightly tight to prevent the roof fan from being sucked during operation and reduce the cross-sectional size of the canvas hose.