31
FIGURE 24
DIRECT VENT TERMINAL CLEARANCES
≤
N
a
tu
ra
l
G
a
s
a
n
d
P
ro
p
a
n
e
In
s
ta
lla
ti
o
n
C
o
d
e
N
a
ti
o
n
a
l
F
u
e
l
G
a
s
C
o
d
e
C
a
n
a
d
ia
n
In
s
ta
ll
a
ti
o
n
s
U
S
In
s
ta
ll
a
ti
o
n
s
C
a
n
a
d
ia
n
In
s
ta
ll
a
ti
o
n
s
U
S
In
s
ta
ll
a
ti
o
n
s