1. The construction and installation of fire dampers can edit and fan, exhaust fan interlock. 2. The operation of the valve mechanism side should be not less than 200mm of headroom to facilitate maintenance. 3. The valve must be checked before installation of the valve operating mechanism is intact, the action is flexible and effective. The damper should be installed in the duct segments close to the wall or floor, the fire dampers on both sides of the partition wall from the wall surface should not exceed 200mm, dampers and pipe insulation material on both sides of each 2.0m wide should be non-combustible material. 5. The damper should set up a separate hanger to prevent pipe deformation affecting its performance in case of fire. 6. damper fuse should be installed in a large piece of the side facing the fire risk. Damper (70 ℃, 280 ℃) otherwise: Fire and smoke damper valve plate discharges leafy exhaust port outlet pressure delivery outlet fire leafy outlet pressure delivery outlet pressure outlet a principle, Uses damper is adjustable on the basis of the valve to increase the temperature control device. Usually was turned on, when the fire broke out, manual, automatic temperature fuse quickly close the valve damper specifications, pull open the valve manually reset. Mounted on the fire safety requirements have ventilation, air-conditioning system piping. 2, the operating principle of the usual damper device, fuse stuck valve stem tip axis (blade shaft) fork damper on sales, so that the valve is normally open state. When the smoke damper after the fire, the temperature rose to the pipeline flow easily blown fuse, temperature fuse fusible sheet, stem Jibei spring driven off the split plate, valve shaft is rotated by the torsion spring acts to close the valve . Normally, To adjust the air volume can be adjusted through the valve opening and valve shaft (blade shaft) linkage handle, fix its position by the time the mother butterfly meet the requirements. Contact with the handle of the fork system have rings of teeth to prevent slippage after engaged to keep the valve opening rate setting unchanged. According to user requests for additional electrical output device closure (cam, micro-switches, terminals, etc.) become fire control valve. 3. Installation Notes: Installation should note the direction of flow, so that the hot air in contact with the fuse first blade shaft. Reset, the first royal top hat, pull out the fuse. Dress fusible sheet, installed fuses. So that the stem tip insert fork, then it is set valve opening. One of the product is to use the exhaust valve and the exhaust port module canceled vent louvers into monolayer; second method is to normally closed damper on each electric charge of the smoke into the normally open 280 degrees Close the damper, the control module to the general monitoring module. Both methods achieve the same fire code requirements, and the actual control is also very reliable. _ Rui Xincheng flue damper air conditioning (certified) _ damper provided by Rui Xincheng Air Conditioning Equipment Co., Texas. Texas Rui Xincheng Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Rui Xincheng conditioning in leadership with the staff warmly welcome all inquiries negotiations to create a better future Rui Xincheng air conditioning.