17
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
H
V
**Wall Firestop/Spacer
(SV4.5HF)
**When using Secure
Flex, use Firestop/Spacer
SF4.5HF
*Ceiling
Firestop/Spacer
(SV4.5BF)
*Note - When using
Secure Flex, use
Firestop/Spacer SF4.5BF
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*When using Secure Flex,
use Firestop/Spacer
SF4.5HF
*Wall Firestop/Spacer
(SV4.5HF)
H = 28 in. (711 mm)
Maximum
7 in. (711 mm)
21 in. (533 mm)
Maximum
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H
V
*Wall
Firestop/Spacer
(SV4.5HF)
*When using Secure Flex,
use Firestop/Spacer
SF4.5HF
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H
Figure 38
- Rear Vent - NO ELBOWS
Figure 39
-
Top Vent -
ONE 90 DEGREE ELBOW - ELBOW CONNECTION AT APPLIANCE
Figure 40
-
Top Vent - ONE 90 DEGREE ELBOW - ELBOW
CONNECTION NOT DIRECTLY AT APPLIANCE
WARNING:
UNDER NO CIRCUMSTANCES MAY SEPARATE SECTIONS OF
CONCENTRIC FLEXIBLE VENT PIPE BE JOINED TOGETHER.
Only the square termination (SV4.5HTS) may be used.
HORIZONTAL VENT FIGURES/TABLES
Note:
Secure Vent
components (rigid vent pipe and terminal) are shown in
the figures;
Secure Flex
components (flexible vent pipe and terminal) may also
be used.
Note:
SV4.5BF (Secure Vent), SF4.5BF (Secure Flex) firestop/spacer must be
used anytime vent pipe passes through a combustible floor or ceiling. SV4.5HF
(Secure Vent), SF4.5HF (Secure Flex) firestop/spacer must be used anytime
vent pipe passes through a combustible wall.
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.
Square termination (SV4.5HTS) shown; Round
Termination (SV4.5HTR) may also be used.
Square termination (SV4.5HTS) shown; Round
Termination (SV4.5HTR) may also be 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.
*
Note: See
Figure 36
for wall thickness range reductions when using
SV4.5HTS termination.
See
Table 3
as an aid in venting component selection for a particular
range of exterior wall thicknesses.
f i r e - p a r t s . c o m
