Daikin 90 Plus AFUE - Vent Pipe Length and Elbow Limits

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©2014DaikinNorthAmerica,LLC
Non‐DirectVenting
 A90degreeelbow
shouldbeattachedto
thefurnace’s
combustionair
intake.
 The90degreeelbow
willguardagainst
inadvertentblockage
oftheairintake.
©2014DaikinNorthAmerica,LLC
*DM96VC/*DC96VCDirectVent(2‐ Pipe)andNon‐Direct Vent(1‐ Pipe)
(6)
MaximumAllowableLengthofVent/FluePipe
&CombustionAirPipe(ft)
(1)(2)
UnitInput
(Btu)
PipeSize
(4)
(in.)
NumberofElbows
(3)(5)
12345678
40,000 2or21/2 120 115 110 105 100 95 90 85
60,000 2or21/29590858075706560
80,000"B" 2or21/27570656055504540
80,000"B" 3 200 193 186 179 172 165 158 151
80,000"C" 2or21/225201510 5N/AN/AN/A
80,000"C" 3 200 193 186 179 172 165 158 151
100,000 2or21/225201510 5N/AN/AN/A
100,000 3 200 193 186 179 172 165 158 151
120,000 2or21/24540353025201510
120,000 3 9590858075706560
PipeLengths,Diameters,andElbowsAllowed
 Refertothetablein
eachmanualfor
applicablelength,
elbows,andpipe
diameterfor
constructionofthe
vent/fluepipe
system.
 Elbows and/ortees
usedinthe
terminationsmust
beincludedwhen
determiningthe
numberofelbowsin
thepipesystem.