Greenheck QEI-L - Acoustic and Installation Features; Sound Levels, Housing, and Duct Connections

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Inlet and Outlet Sound Power Levels
AllGreenheckmixedflowfanshaveAMCAlicensedsoundpowerlevelsforboththe
faninletandoutlet.
Applicationandinstallationdetermineswhichsoundpowerreading(inlet,outlet,
orboth)iscritical.Thedifferencesbetweenthegeneratedsoundfromtheinletand
outletareimportantandnoticeable.AMCAlicensedinletandoutletsoundpower
dataprovidescompletesoundinformationtoselectafanbasedontheacoustical
requirements.Foradditionalinformationonsound,refertopage6.
AutoCAD
®
and 3-D Revit
®
Models
ScaledAutoCAD
®
drawingsandRevit
®
models
areavailablethroughGreenheck’swebsite
orfromtheGreenheckCAPSprogram
whichretrievesdrawingsandplacesthem
automaticallyintoajobfolder.
Field Rotatable Housing / Compact Size
TheQEI-LandQEIaredesignedtoaccommodatechangingfan
mountingpositionsandmotororientationinthefield.Mounting
fixturesaresecurelyboltedtothefancasingandcanberelocated
torepositionhowthefanisinstalledorthepositionthemotoris
oriented.Flexibilityinamotor’slocationisimportantforeasier
accessandcandeterminewheretheunitwillfit.Lastminute
designchangesorunexpectedobstaclesduringinstallationare
nolongeraproblem.
Greenheck’smixedflowfansweredesignedforcompactsize.
Keepingsizetoaminimumisimportantwhenfittingintotight
spaceslikemechanicalroomsorairhandlers.
Patented (QEI/QEID)
USAPatentNo.7048499
China(P.R.)PatentNo.CN1294361C
MexicoPatentNo.243465
Slip-Fit Duct Connections
TheinletandoutletendsoftheQEI-I/IIandQEIDaredesignedto
accept“slip-fit”connections.Oftencompanionflangesarebolted
toafan’sinlet/outletflangetoprovideaslip-fitconnectionfora
flexiblesleeve,aswiththeQEI-L.Thisextrastepisnoweliminated
bydirectlyattachingtheflexiblesleevetotheductandfan.This
savestimeandmoneyintheinstallationprocess.
Itisrecommendedtouseaflexiblesleeveconnectioninsteadofa
rigidductconnection.
Theadvantagesofaflexibletransitionare:
• Decreasedsoundtransmissionin
theductwork
• Flexibleconnectionsallowforminor
misalignment
• Accommodatestheuseofthrust
restraintstoresistthrustloads
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Greenheck’sSoundLab