[quote:cdae9efe50="manhk167"]有答案冇?[/quote]
好似有呀...放心放心... :作者: Ray 時間: 2004-1-16 14:01:47
According to the book “minimum requirement of Fire Services Installation” issued from Fire Services Department fire damper is required if the air duct connecting two compartments or more.
Moreover detection system should be installed to the air handling unit to stop power supply while smoke moved into the machine.
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