Rev. D 12-22-04
P/N 472235
17
INDOOR INST
ALLA
TIONS
MINIMAX NT
VENTING GUIDELINES
4'
7'
4'
4'
F
orce Air Inlet
V
ent Hood
W
alkw
a
y
3'
1' m
in.
1' min.
1' min.
abo
v
e
g
rade
V
ent Hood
V
ent Hood
m
ust e
xtend at least 3 ft.
higher than the
point at which it passes through the roof
,
or as per
mitted b
y
local code
.
m
ust use a roof thimb
le through the
roof penetr
ation.
m
ust ter
minate with an appro
v
ed (listed)
roof jac
k, stor
m collar
, and v
ent/w
eather cap
.
m
ust be not less than 7 ft.
abo
v
e
pub
lic w
alkw
a
y
s
.
m
ust be at least 3 ft.
abo
v
e
an
y outside air intak
e
located within a 10 ft.
r
a
dius
.
m
ust NO
T
be within 3 ft.
of an inside cor
ner of the str
ucture
.
m
ust be at least 1 ft.
abo
v
e
g
rade
.
m
ust be located the f
ollo
wing distances a
w
a
y
from an
y door
, windo
w
, or g
ra
vity air inlet:
4 ft.
belo
w
4 ft.
hor
iz
ontally
1 ft.
abo
v
e
Air Suppl
y
Clear
ances indicated are f
or non-mechanical air supply inlet to the b
uilding.
F
or mechanical air supply inlet, a minim
um hor
iz
ontal clear
ance of 10 f
eet
should be maintained a
w
a
y
from the v
ent ter
mination.
V
ent termination f
or side wall installations:
m
ust be the same diameter as the
v
ent connector
.
m
ust be suitab
le f
or use with categor
y III
appliances with flue gas temper
ature r
atings
less than 400 deg.
F
.
ma
y use a single w
all v
ent pipe with
per
manently sealed seams
, joints and
proper insulating mater
ials
.
V
ent pipe e
xtension:
V
ent f
or r
oof penetration installations:
Recommended sources f
o
r
side w
all
V
ent Hood;
see "Section
V
enting".
v
ent ter
minated at least 24"
abo
v
e
an
y object within 10 ft.
V
ent Cap
Ridge
Chimne
y/Gas V
ent
3 ft.
min.
2 ft.
min.
Roof
Ja
ck
Roof
Thimb
le
More Than10
ft.
Figure 12.
Section III. Installation
