GE JXCHSS Brochure Page 247

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-ICROWAVE/VENS 7ATER3YSTEMS !IR#ONDITIONING#OOKING0RODUCTS
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SYSTEMINMULTIFAMILYCONSTRUCTIONISESPECIALLY
IMPORTANT4HERESTRICTIONSAPPLIEDBYTHISTYPEOF
CONSTRUCTIONSHOULDCAUSETHEPLANNERTOBEMORE
CONCERNEDTHANINSINGLEFAMILYCONSTRUCTION
7HENTHELENGTHOFTHEEXHAUSTDUCTORTHENUMBER
OFTURNSINTHESYSTEMEXCEEDSTHEMAXIMUMLIMI
TATIONSRECOMMENDEDBYTHEDRYERMANUFACTURER
THEPLANNERMUSTSEEKANALTERNATESOLUTION/NE
OPTIONISTOINSTALLACOMMONDUCTINGSYSTEMTHAT
ISCAPABLEOFHANDLINGTHEDISCHARGEOFSEVERAL
DRYERSATVARIOUSPOINTSALONGTHESYSTEM
4HESCOPEOFTHESUBJECTISFARTOOBROADTOBE
EXTENSIVELYDESCRIBEDWITHINTHISPUBLICATION
3UFFICIENTINFORMATIONISPRESENTEDHOWEVERTO
MAKETHEPLANNERAWAREOFTHEIMPORTANCEOF
SPECIALATTENTIONTOTHESUBJECT4WOTYPESOF
COMMONDUCTSAREGENERALLYUSEDTHECOMMON
DRYEREXHAUSTSTACKWITHANAUXILIARYROOFFANAND
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SUGGESTEDTHATPROFESSIONALENGINEERINGCOUNSEL
SHOULDBESOUGHTINTHESEMATTERS$RYERSSHOULD
BEINSTALLSASCLOSETOTHECOMMONDUCTASPOSSIBLE
$RYERSDISCHARGESMUSTBEOFFSETTOPREVENTONE
UNITFROMEXHAUSTINGDIRECTLYINTOANOTHER
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EXHAUSTINGFROMTHEDRYERS#ONSIDERATIONMUST
BEMADEFORLINTBUILDUPEXCESSIVECHIMNEY
PRESSURESBACKDRAFTSANDOTHERTECHNICALFACTORS
WHICHWILLINFLUENCETHEPERFORMANCEANDTHE
SAFETYOFTHESYSTEM!LINTCLEANOUTACCESSDOOR
SHOULDBEINCLUDEDATTHEBOTTOMOFTHECHIMNEY
%ACHDRYERDUCTMUSTHAVEADIAMETER
BACKDRAFTDAMPERADJUSTEDSOTHATITWILLJUST
CLOSEWITHTHEDRYERINOPERATIVE4HISWILLPREVENT
THEEXHAUSTANDLINTOFONEDRYERFROMGOINGINTO
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EACHINDIVIDUALDRYERMUSTMEETTHETURNAND
LENGTHREQUIREMENTSASNOTEDONPAGE
5SETHESPECSFORAEXHAUSTHOODFOR
PROPERDRYERPERFORMANCE)NCLUDETHEª
ELBOWANDALLDUCTINGINTHECHIMNEYINYOUR
CALCULATIONS4HEMINIMUMOFVERTICAL
DUCTINGINTHECHIMNEYREDUCESBACKPRESSURE
ANDISREQUIREDFORPROPERDRYERPERFORMANCE
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THESAMETIME3TACKAIRVOLUME1X
#&-1ISAIRVOLUMETHATSTACKMUSTBECAPABLEOF
HANDLINGINTHEEVENTALLDRYERSARERUNNINGATONETIME
4HEREFORETHESTACKDIAMETERMUSTBE
ORREADDIRECTLYFROM)LLUSTRATION.OBYPLACING
ONTHEVERTICALSCALEANDREADINGONTHEHORIZONTAL
SCALE4HESTACKDIAMETERSHOULDBEINCHESTOHANDLE
THEREQUIREDVOLUMEOFAIRANDTHECONTINUOUSDUTY
EXHAUSTBLOWERSHOULDBERATEDTOHANDLETHISVOLUME
WHILEMAINTAININGANAIRVELOCITYOF&T-INUTE
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4HESTACKOUTLET3EE)LLUSTRATION.OMUSTBE
FITTEDTOACONTINUOUSDUTYEXHAUSTFANRATEDTO
HANDLETHESTACKAIRVOLUMEFORTHETOTALNUMBER
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EXHAUSTFANISNECESSARYTOMAINTAINEFFICIENT
OPERATION
4HEBOTTOMOFTHESTACKSHOULDCONTAINABAROMETRIC
DAMPERTOPREVENTDRAWINGAIRTHROUGHTHEDRYERS
NOTINUSEANDALINTCLEANOUTACCESSDOOR4HE
DAMPERSHOULDBEADJUSTEDTOJUSTOPENWITHALL
DRYERSONANDTHECONTINUOUSDUTYEXHAUSTFAN
OPERATING
4HEWEIGHTEDDAMPERINTHEINDIVIDUALDRYERDUCTS
SHOULDBEADJUSTEDSOTHATITWILLJUSTCLOSEWITH
ALLDRYERSOFFANDTHECONTINUOUSDUTYEXHAUSTFAN
OPERATING4HEFANSHOULDBERUNNINGATALLTIMES
4HEDUCTSYSTEMFROMEACHINDIVIDUALDRYERMUST
MEETTHETURNANDLENGTHREQUIREMENTSASNOTED
ONPAGE
4HEREQUIREDSTACKDIAMETERFORAIRVOLUMESOF
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)LLUSTRATION.OANDCALCULATIONSONTHECHART
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