These requirements cover rubber-gasketed fittings and metallic pipe intended for use as extinguishing agent distribution piping of pre-engineered fire extinguishing system units for protection of commercial cooking equipment. For installation requirements@ see the following documents: the Standard for Dry Chemical Extinguishing Systems@ NFPA 17@ or the Standard for Wet Chemical Extinguishing Systems@ NFPA 17A and the manufacturer??s instruction manual. The fittings are of the configuration type (e.g.@ tees@ elbows@ couplings@ and transition fittings) with integral rubber gaskets or seals. The joints formed with the use of fittings covered by this Outline of Investigation prevent separation under pressure. Pre-engineered fire extinguishing system units@ extinguishing agents@ or both are required to comply also with the requirements for construction@ performance@ and fire testing as applicable to specific types@ designs@ sizes@ and arrangements. All such additional requirements which apply are not within the scope of these requirements; but are contained in UL 1254@ (Construction and Performance)@ and UL 300@ (Fire Testing).
SUBJECT 1254F-2016由UL - UL 发布于 2016-03-04,并于 2018-12-22 实施。
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