Guangzhou kitchenware engineering exhaust hood installation specifications and requirements

What are the installation requirements for kitchenware engineering exhaust hoods in Guangzhou? The exhaust hood is a device installed at the smoke outlet of the water heater to reduce the impact of backdraft on the combustion performance of the burner; it is conducive to smoke exhaust and facilitates smoke escape when the flue is blocked. The exhaust hood consists of two parts: the hood body and the hood cover. The hood body consists of three planes, and the hood cover consists of four planes (or baffles) at the front, back, left and right to form a cone. (1) The oil fume absorption rate should be greater than 95%, and the same deception diversion enclosure device should be used. (2) The enclosure structure should be equipped with a hinged inspection door for easy sanitation and observation. (3) The equipment is made entirely of stainless steel, and all joints are waterproof, steam-proof, and oil fume-proof. (4) The hood is embedded in the ceiling, and a stainless steel decorative plate is provided between the two. It is made of stainless steel plate with a thickness of 1.2mm, which is easy to disassemble and has an embedding depth of ≥100mm. (5) The entire hood is made of stainless steel plate with a thickness greater than 1.0mm. (6) The ventilation pipe is made of 1.0 galvanized sheet metal and is equipped with a stainless steel air volume regulating valve. (7) The lighting equipment is splash-proof, waterproof, and concave, distributed every 1000mm, and all wires should be put in the duct and connected with a junction box. The illumination device is greater than or equal to 600lux, and energy-saving light tube lamps are used, with a unified power interface. (8) The vertical plate of the wind hood has an integrated surrounding self-draining device, and the discharge trough is easy to clean oil smoke and steam. The discharge pipe is made of stainless steel and connected in parallel to the full-automatic self-cleaning device of the wind hood.