Direct Vent—Vertical
Installation
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:MKLAGFHJG<M;LKLGL@=GML<GGJK
0M:LJ9;L>LH=J=D:GO*9P=D:GOK
Table P: Category IV Horizontal Vent & Horizontal Direct Vent
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<AKL9F;=KDAKL=<AF19:D=*"9;@=D:GOMK=<AK=IM9D
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1@=N=FLEMKL:=AFKL9DD=<LGHJ=N=FLL@=HGL=FLA9D9;
;MEMD9LAGF G> ;GF<=FK9L= AF L@= N=FL HAH=K &L AK
J=IMAJ=<L@9L
1@= N=FL EMKL := AFKL9DD=< OAL@ 9 ;GF<=FK9L=
<J9AF9K<AJ=;L=<:QL@=N=FLE9FM>9;LMJ=J
1@= N=FL EMKL := AFKL9DD=< OAL@ 9 KDA?@L MHO9J<
KDGH= G> FGL EGJ= L@9F AF;@ H=J >GGL G> @GJA
RGFL9DJMFLGL@=N=FLL=JEAF9D
Termination
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:MAD<AF?1@=N=FL;9H;9FFGL:=AFKL9DD=<AF9O=DDGJ
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>L9:GN=?JGMF<D=N=D9F<9:GN=FGJE9DKFGOD=N=DK
1@=N=FL;9H *201+,1:= AFKL9DD=<OAL@9FQ;GE
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9:GN=
CAUTION: 1@AK N=FLAF? KQKL=E J=IMAJ=K L@=
AFKL9DD9LAGFG>9;GF<=FK9L=<J9AFAFL@=N=FLHAHAF?
H=J L@= N=FL E9FM>9;LMJ=J]K AFKLJM;LAGFK #9ADMJ= LG
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NGA< 9DD O9JJ9FLA=K GF L@AK :GAD=J +GL= L@9L L@=
;GF<=FK9L=AK9;A<A;9F<@A?@DQ;GJJGKAN=
Fig. 26: Direct Vent - Vertical
Model No.
Certified Vent
Material
Vent and
Intake Air
Vent Size
(
in.)
Horizontal Vent Length
(ft)
Combustion
Air Intake
Pipe
M
aterial
A
ir Inlet
Max.
Length (ft)*
Min. Max.
9F9<9,FDQ
2) 0-3
9F< -3
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)
0;@-3 -3
=FLJGL@=JEU
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0L==D
-3 0
-3