Under normal circumstances, the smoke should be reported first off air supply region, so the combustion air fan, but in accordance with the "high level of civilian health plan made nuisance fire standard" (GB50045-95,2001 edition) and in Article 8.4.11 "Libraries car repair garage, library planning hinder fire brakes standard" (GB50067-97) in section 8.2.7 limited, senior civilian health smoke machine-made set of underground rooms and the library is not directly dispersed Chu car to the outside mouth hinder fire partitions, exhaust system when setting the machine, set the air supply system when Hou should be the same. Air blower system and feed valve exhaust fan, began to fire when the linkage, resulting in positive zone, Pai Chu smoke before. Two-speed blower and exhaust smoke mechanical electron source shall request the fire power supply. Range; (1): When connecting pipes and install the fan inside in the air conditioning, the noise is less than 70dB (2): Alternative 2000pa low centrifugal fan following, can be widely used in industrial, civil and other ventilation and dust. MHL3-2A, MPYH-14A (MHTFL-14A) Francis two-speed high-temperature exhaust fan only has the HL-3-2A-type fan function, but also about 280 ℃ ambient temperature in the normal operation of 0.5 hours htf fire smoke fans, both for ventilation exhaust fan fire manufacturers, can play a dual role, such as high-temperature exhaust for underground tunnels, underground shopping malls, underground storage facilities and other fire, by the institute and the user's choice. Axial exhaust fan fire | Wuhai exhaust fan | Chen Yu-conditioned factory outlets provided by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chenyu air conditioning and you hand into the brilliant, for a better future!