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If an Exhaust Hood Cannot be Used
Theoutsideendofmainventshouldhaveasweepelbow
directed downward.
* Minimum clearance above
any accumulation of snow,
ice, or debris such as leaves
Ifmainventtravelsverticallythroughtheroof,ratherthan
throughwall,installa180°sweepelbowonendofventatleast
610mm(2ft.)abovesurfaceofroof.
Theopeninginwallorroofshallhaveadiameter13mm(1⁄2")
largerthanventdiameter.Ventshouldbecenteredinopening.
Donotinstallscreeningoverendofventforbestperformance.
DRYER VENTING REQUIREMENTS
Multiple Dryer Venting
Amainventcanbeusedforventingagroupofdryers.The
mainventshouldbesizedtoremove5663l/min.(200CFM)
ofairperdryer.Large-capacitylintscreensofproperdesign
maybeusedinmainventifcheckedandcleanedfrequently.
Theroomwherethedryersarelocatedshouldhavemake-up
air equal to or greater than CFM of all the dryers in the room.
Back-draftDamperKit,PartNo.3391910,isavailablefrom
yourdistributorandshouldbeinstalledintheventofeach
dryertokeepexhaustedairfromreturningintodryersandto
keepexhaustinbalancewithinmainvent.Unobstructedreturn
airopeningsarerequired.
Eachventshouldenterthemainventatananglepointingin
thedirectionoftheairflow.Ventsenteringfromtheopposite
sideshouldbestaggeredtoreducetheexhaustedairfrom
interfering with the other vents.
air flow
Themaximumangleofeachvententeringthemainvent
shouldbenomorethan30°.
Keepairopeningsfreeofdrycleaningfluidfumes.Fumes
createacidswhich,whendrawnthroughthedryerheating
units,candamagedryersanditemsbeingdried.
Aclean-outcovershouldbelocatedonthemainventfor
periodiccleaningoftheventsystem.
30˚ max.
air ow
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