13
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
A
E
L
B
A
T
V M
INIMUM
m
u
m
i
x
a
M
H
t
e
e
f
)
m
(
t
e
e
f
)
m
(
1
)
5
0
3
.
0
(
2
)
1
6
.
0
(
2
)
1
6
.
0
(
4
)
2
2
2
.
1
(
3
)
4
1
9
.
0
(
6
)
6
8
.
1
(
4
)
2
2
.
1
(
8
)
4
.
2
(
.
x
a
M
)
m
4
.
2
1
(
t
e
e
f
0
4
=
H
+
V
.
x
a
M
)
m
4
.
2
(
t
e
e
f
8
=
H
B
E
L
B
A
T
V M
INIMUM
H
m
u
m
i
x
a
M
t
e
e
f
)
s
r
e
t
e
m
(
t
e
e
f
)
s
r
e
t
e
m
(
1
)
5
0
3
.
0
(
5
)
2
5
.
1
(
2
)
0
1
6
.
0
(
0
1
)
1
.
3
(
3
)
4
1
9
.
0
(
5
1
)
5
6
.
4
(
4
)
2
2
.
1
(
0
2
)
2
.
6
(
V
+
V
1
.
x
a
M
)
m
4
.
2
1
(
t
e
e
f
0
4
=
H
+
H
.
x
a
M
)
m
2
.
6
(
t
e
e
f
0
2
=
40 feet (12.2 meters)
Maximum
A Vent Restrictor, as
shown in Figure 15,
page 9, must be used in
this application
Firestop Thimble
V
H
**Wall
Firestop/Spacer
(SV4.5HF)
A Vent Restrictor, as
shown in Figure 16,
page 9, must be used in
this application
**When using Secure
Flex, use Firestop/Spacer
SF4.5HF
Firestop Thimble
H
V
V1
**Wall
Firestop/Spacer
(SV4.5HF)
A Vent Restrictor, as
shown in Figure 15,
page 9, must be used in
this application
**When using Secure
Flex, use Firestop/Spacer
SF4.5HF
Firestop Thimble
*Ceiling
Firestop/Spacer
(SV4.5BF)
*Note - When using
Secure Flex, use
Firestop/Spacer SF4.5BF
Figure 30
-
Rear Vent - ONE 90 DEGREE ELBOW
Figure 29
- Top Vent -
STRAIGHT
Figure 31
-
Top Vent - TWO 90 DEGREE ELBOWS
VERTICAL VENT FIGURES/TABLES
Note:
Secure Vent
(rigid vent pipe) is shown in
the figures;
Secure Flex
(flexible vent pipe) may
also be used
(see page 21).
Note:
SV4.5BF (Secure Vent), SF4.5BF (Secure
Flex) firestop/spacer must be used anytime
vent pipe passes through a combustible floor
or ceiling. Use one of the thimbles shown on
page 24
for roof penetrations as described on
page 11
. SV4.5HF (Secure Vent), SF4.5HF (Se-
cure Flex)firestop/spacer must be used any-
time vent pipe passes through a combustible
wall.
WARNING:
UNDER NO CIRCUMSTANCES MAY
SEPARATE SECTIONS OF CONCEN-
TRIC F L E X I B L E V E N T P I P E B E
JOINED TOGETHER.
Note:
Two 45 degree elbows may be used in place
of one 90 degree elbow. The same rise to run
ratios, as shown in the venting figures for 90
elbows, must be followed if 45 degree elbows are
used.
Note:
It is very important that the horizontal/
inclined run be maintained in a straight (no dips)
and slightly elevated plane in a direction away
from the fireplace of
¹⁄₄
" rise per foot (20 mm per
meter) of horizontal vent.
f i r e - p a r t s . c o m
