合(he)用(yong)正壓(ya)送(song)風(feng)系(xi)(xi)統未設計壓(ya)差(cha)調(diao)治裝置。按規范(fan)要求,機械加壓(ya)送(song)風(feng)的(de)防煙樓梯間和合(he)用(yong)前(qian)室(shi)(shi),宜分袂獨立(li)設置送(song)風(feng)系(xi)(xi)統,當共用(yong)一(yi)個系(xi)(xi)統時,應在(zai)通向(xiang)合(he)用(yong)前(qian)室(shi)(shi)的(de)支風(feng)管上設置壓(ya)差(cha)自動調(diao)治裝置。