How to install the smoke pipe and flue fire check valve

1, vertical transportation flue should take protective measures, and must be two points of lifting.　　2, set out the center line of the flue position, in the reserved holes led down from the roof, the four vertical center line, in the floor plane popped out 2 orthogonal center line.　　3, the flue to the scene, the first flue lifted to the roof, in the flue popped up on the four center lines, and then use the electric hoist will be slowly lowered from the reserved holes, from top to bottom layer by layer installation, the flue in place, correct the center line. Requirements flue centerline and the centerline of the hole positioning deviation of not more than 1cm, the centerline of the upper and lower flue mouth deviation of not more than 1cm, each section of the flue must ensure that the layers of vertical.　　4、Installation of the flue should be done at each level of load-bearing treatment, the installation of supporting steel 2? After installing the flue, install the fireproof flue check valve at the reserved check valve opening of each flue, first mix the cement with special glue and coat the edge of the check valve, and then install it at the reserved check valve opening.　　6. During the construction, the reserved holes at each level should be covered with cover boards to ensure the safety of construction and prevent the construction waste from falling into the flue.　　7、This flue is a thin-walled component, it should be lifted and put down gently when handling and installing, and should not be impacted or collided, and should not be stacked on the pipe or walked on other heavy objects.　　8, out of the roof flue should be in the roof insulation, fireproof layer before construction. 9, it is strictly prohibited to use the gas water heater exhaust flue system.