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<br />:~5/ :i&l 91 07: 54
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<br />512 447 2248
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<br />Fire Rated
<br />Fixture Protection,-
<br />
<br />This handbook is concerned with demonstrating
<br />construction methods for U. L: approved fire'
<br />rated light fixture and air duct protection....
<br />systems. These systems affect a substantial
<br />re~':Iction of heat t~an$n:'issi<:)O.t~roufl.p tn~"'i!i.
<br />ceiling membrane In a fire situation.:" .. .. . .
<br />I ' ..<;r:
<br />
<br />The light fixtures illustrated are flourescent
<br />tube type with steel housings and hardware.
<br />All light fixture protection installations require
<br />at least % in. heat diffusion space between the
<br />fixture housing and the proteotion material.
<br />Installation shall be in conformance with the
<br />National Electric Code and in cases of conflict
<br />with the U. L. design rating, the code shall
<br />govern. Spacers, used to achieve ventilation
<br />space for heat diffusion, may not cover the
<br />
<br />Table of Contents
<br />
<br />ACOUST. CONCEPTS, INC.
<br />
<br />PAGE 04
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<br />........,.
<br />
<br />ballast. U. L. recommends the use of Class P
<br />ballast with adequate ventilation to reduce
<br />P~~rn~ture ballast failure due to overheating.
<br />
<br />,.,.,Ofequal importance is the prevention of toxic
<br />'. gas and smoke transmission to other areas via
<br />,1"the.ventilation system. The U. L. time design
<br />. ratings used in this handbook were developed
<br />from tests employing no air movement. unless
<br />otherwise specified by the design. Therefore.
<br />. the.U. L. desIgn ratings require air movement
<br />be effectively stopped at the start of a fire.
<br />
<br />When considering designs including air
<br />distribution equipment, consult NFPA Standard
<br />No. 90A, "Standard for the Installation of Air
<br />Conditioning and Ventilating Systems,"
<br />
<br />
<br />Page
<br />
<br />24" x 24" Non.Air
<br />
<br />Handling Fixture. . . , . . . , , . . _ . . . . , . , . . . . . . , , , . , . . . . . . . . . , , . . , . , . , , . . . . . . , . . , , , , , , , 3
<br />
<br />12" X 4811 and 24/1 x 48"
<br />Non-Air Handling Fixture, . , . . , , , , . . . . . . . . , . . . . . . . . , . . . , . . . _ , . - . . . . . . . . , . . . . , . , , . . . . , . . ,. 4
<br />
<br />241. X 48" Air Handling
<br />
<br />Fixture, . _ . . , . . . . , . .. ,......,.. _, ....,.....,....."..".................,...,.,..,.,' 5
<br />
<br />
<br />2011 X 48" Non.Air . I .'. .
<br />
<br />Handling Fixture. , . . . . _ . .. :, . .' . . .'. . , , '. . , , . . . " , . . .... . '.' ...,.."."..,............,." 6
<br />
<br />
<br />20" X 60" Non.
<br />
<br />Air Handling Fixture.. . _ , " . . , . , .. , , ,. . . . . . ., '... . '.' . . . . . . . . . , . , . . . . . . . . . , . , . , , . . . , , . . . , .. 7
<br />
<br />20" x 60" Air
<br />Handling Fixture. . . , . . . . . , . . , . . . . , . . , , , , . ,
<br />
<br />- , ~ . . , . . . . , . I - . . , . . . . . , . . I . . I . - " .
<br />
<br />...........8
<br />
<br />30" X eon Non.Air .'
<br />
<br />Handling Fixture, . . _ . . . , . , :'.' . , . ;1,;'". . ... . .. . . . ... ., , . .. . ... . . , . , . , . . , . - .. . . , . , , , , , , , , , . - .'. .. 9
<br />
<br />3011 X 60" Air
<br />
<br />Handling Fixture. , , . . . . . . . . . . , , . , ' .. . . . . , . , . , . . . . . . . . . . . . , . . . . . , . . , . . . , . . ' , , . . , , . . , . . . .10
<br />
<br />Alternate Duct
<br />Protection Methods. . . . . . . . . . . . . . . . . . . . , . , . . .
<br />
<br />. .. ~ . ~ . ~ . . . . ~ . ; . . . . . . , . . . . . . . . . . . . . .
<br />
<br />, . . . . . .11
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