UL555S防煙閥標(biāo)準(zhǔn) – 標(biāo)準(zhǔn)名稱(chēng)
UL555S：Standard for Smoke Dampers
UL555S：防煙閥標(biāo)準(zhǔn)
UL555S防煙閥標(biāo)準(zhǔn) – 適用范圍
這些要求涵蓋旨在用于加熱，通風(fēng)和空調(diào)（HVAC）系統(tǒng)的煙霧調(diào)節(jié)器。
防煙閥的用途是：
a）限制設(shè)計(jì)成在發(fā)生火災(zāi)時(shí)自動(dòng)關(guān)閉的HVAC系統(tǒng)中的煙霧傳播；
b）當(dāng)HVAC系統(tǒng)是工程煙霧控制系統(tǒng)的一部分時(shí)，有助于控制跨煙霧屏障的壓差。
These requirements cover smoke dampers intended for use in heating, ventilating, and air conditioning (HVAC) systems.
Smoke dampers are intended:
a) To restrict the spread of smoke in HVAC systems that are designed to be automatically shut down in the event of a fire, or
b) To assist with the control of pressure differentials across smoke briers when the HVAC system is part of an engineered smoke control system.
