Wind chassis control parameters chosen for air flow, total pressure, efficiency, noise, and electrical power. There are centrifugal and axial flow. Generally use air volume of 1.05 to 1.1, pressure safety factor of 1.10 to 1.15. But not using too large, long-term in order to prevent the fan zone inefficient operation. First, before the wind chassis should be ready to install the materials and tools HTFC-A exhaust air box, and all mechanical parts of the fan blower check DBF wind chassis, impeller should be particularly careful examination, if there is no damage, square can be installed. I plant a low-noise wind chassis VAV dual speed exhaust wind chassis, advanced DF series low noise double suction centrifugal fan, air-rough-air filter, in effect filter or sub-efficient filter, put in the (insulation) sound-absorbing panels and use wind chassis damping rubber pads, etc., with low noise, small vibration, small size, light weight, air volume, variable-speed, variable air volume, easy to operate, flexible adjustment and easy disassembly site and so on. Low-noise wind chassis cabinet, Chen Yu-conditioning (certified), Baodi wind chassis provided by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Chen Yu-conditioning in leadership with the staff warmly welcome all inquiries negotiations to create Chenyu conditioning a better future.