Daikin 90 Plus AFUE - Return Air Opening Preparation

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©2014DaikinNorthAmerica,LLC
BottomReturnAirOpening
 Thebottomreturnairopeningon
upflow modelsutilizea“lance
andcut”methodtoremove
sheetmetal fromtheduct
openinginthebasepan.
 Unfoldtheductflangesaround
theperimeteroftheopening
usingapairofseamer pliersor
seamer tongs.
 WARNING:Sharpedges.Gloves
required.
©2014DaikinNorthAmerica,LLC
BottomReturnAirOpening
Airflowareawillbereducedbyapproximately18%ifductflangesarenot
“unfolded”.Thiscouldcauseperformanceissuesandnoiseissues.
PressOutbyHand
ScribeLinesOutlining
DuctFlanges
CutUsingTinSnips
CutFourCornersAfter
RemovingSheetMetal