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<br />Rev. 1 <br /> <br />.... tIC.~ _ ~ .... <br />.........tH ,.~z - 7!.S" *x <br />. .............. .......... P<<.-o3 - 1IOCr MAX <br /> <br />...2><. I ". .... ~ <br />""" ", ~ ./ <br />\ ~ <+~j::r <br />I / - //kF : <br />~ /' "."" <br />\ ?<<. ' , .! \ <br />'" 't:./ ..' . ......... // ; <br />~. '.j,/ <br />~~ <br /> <br />---r <br />I . <br />. . 'I <br />-,---'$----'1.. <br />. i :ti <br /> <br />;-1./2 ---J <br /> <br />Figure 3-2. Single Nozzle Placement In Duct. <br /> <br />...... <br />:~t.r''''''''-U''''''lC <br /><~ ""~7J 4 I~' WAll <br />,-', '..... <br />~ "-- ......./'>-: <br />r ! :'---/"./ <br />I ' .~ ./. <br />..>.-~, .~ <br />\ L.~"'./ ./ ,;.... I '\ <br /><'. .:;- '" 1,./ \ <br />-~ <br /> <br />___......t_ ~- - ,~ ..."x <br />-;"- ~-oJ - ISO" WAX <br />.;'~ <br />,." '-:;, <br />#--; ~;. <br />. 1/' <br />\~. <br />( .~ ~"'}'--l <br />~,~/ <br />~; <br />/~. <br />/ : ': <br />-J:~-'-:-'-~'-r- <br />~"""" : ..., "" - <br /> <br />~'I <br /> <br />. ----.: <br /> <br />--r <br />. , I <br />-L'-;'-'-._.~'--r ~ <br />! . l.:u <br />...J v. to- ~ V. ~ <br />~,~ <br /> <br />Figure 3-2.1. Dual Nozzle Placement In Duct. <br /> <br /> <br />Duct Nozzle Coverage Chart <br /> <br /> MA..mfUl\l ;\IAXOfUl\l <br />:-lOZZLE SIDE PEROIETER FLOW POI:\lS <br />NL-P 17- so- <br />2 x NL-P 3-1- 84' 2 <br />NL-D2 2S" 75' 2 <br />J <br />Nl.-D3 " 100" <br />2 x NL-D3 66" ISO" 6 <br /> <br />NOn:: A SI:iCLE DUCT BRANCH CAN Oi'iL), SUPPORT: <br />I) A Sincte I\"L-P <br />2) A Single ~"L-D2 <br />3) A Sinc1e NL-D3 <br />-I) Two :'lL-P's <br />S) Two :'lL-Dl's <br /> <br />B. Plenum Protection <br /> <br />The Model NL-A nozzle is a one (1) flow point nozzle that <br />has been developed to protect the plenum section of the <br />exhaust hood. Only one (1) Model NL-A nozzle can be <br />used on a single plenum branch. A single Model NL-A can <br />protect a plenum (with single or V-Bank filters) with <br />rectangular dimensions of 8' x 4' or less. Larger plenums <br />can be protected by dividing the hazard area so that each <br />nozzle protects an area of 8' x 4' or less (see Figure 3-3). <br />The nozzle(s) must be located at the center of the V-Bank <br />width or centered between the filter width when used with <br />a single bank filter plenum. It must be within 4" of the wall <br />it is mounted against (see Figure 3-4), or within 4" of the <br />edge of the protected zone. . <br /> <br /> <br />...(1 <br />/~~ <br />.. <br /> <br />:)J <br />/' <br /> <br /> <br />Figure 3-3. Plenum Coverage Limitations, Model NL-A Nozzle. <br /> <br />.EX 3830 <br />,vember 1, 1994 <br />