Horizontal Vent Tables And Figures - Lennox EDV40RNM Installation Instructions Manual

HORIZONTAL VENT FIGURES/TABLES
NOTE: Secure Vent components (rigid vent pipe and terminal) are
shown in the figures; Secure Flex
terminal) may also be used.
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), slightly elevated plane. The recommended incline
is approximately 1/4" per foot (20 mm per meter) horizontal, in a direction
away from the fireplace. The rise per foot run ratios that are smaller are
acceptable all the way down to at or near level.
NOTE: SV4.5VF (Secure Vent
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.
Under no circumstances, may separate sections of
concentric flexible vent pipe be joined together.
Venting Components Required for Various Exterior Wall Thick-
nesses, when using Typical Termination Kits
Vent Components Required
Termination Kit Only
Termination Kit and 6" Vent
Section (SV4.5L6)
Termination Kit and 12" Vent
Section (SV4.5L12)
Termination Kit and Tele-
scopic Section (SV4.5L12)
Table 8
H = 28 in. (711 mm) Maximum.
7 in
(178 mm)
Only the square termination (SV4.5HT-2) may be used.
See Table 8 as an aid in venting component selection
for a particular range of exterior wall thicknesses.
Figure 37
- Rear Vent - NO ELBOWS
20
components (flexible vent pipe and
®
), SF4.5VF (Secure Flex) firestop/spacer
®
WARNING
Exterior Wall Thickness - inches (mm)
6 to 9-1/4 (152 to 235)
10-3/4 to 14 (273 to 356)
16-3/4 to 20 (426 to 508)
11-3/4 to 20 (299 to 508)
NOTE: See Figure 36 showing wall thickness range
when using SV4.5HT-2 termination kit.
H
Wall Firestop/
Spacer
SV4.5HF**
**When using Secure Flex, use
Wall Firestop/Spacer SF4.5HF.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
TABLE F
H Maximum V Minimum
(meters) (meters)
feet feet
(0.914) Elbow Only
3
**When using Secure
Flex, use Wall Firestop/
Spacer SF4.5HF.
Square termination (SV4.5HT-2) shown.
See Table 8 as an aid in venting component selection
for a particular range of exterior wall thicknesses.
Figure 38 - Top Vent -
ONE 90 DEGREE ELBOW - ELBOW CONNECTION AT APPLIANCE
TABLE G
H Maximum V Minimum
(meters) (meters)
feet feet
5 (1.524) 1 (0.305)
10 (3.048) 2 (0.610)
15 (4.572) 3 (0.914)
20 (6.096) 4 (1.219)
V + H = 40 feet (12.2 m) Max.
H = 20 ft. (6.096 m) Max.
H
Wall Firestop/
Spacer SV4.5HF**
*When using Secure Flex, use
Ceiling Firestop/Spacer SF4.5VF.
**When using Secure Flex, use
Wall Firestop/Spacer SF4.5HF.
Square termination (SV4.5HT-2) shown.
See Table 8 as an aid in venting component selection
for a particular range of exterior wall thicknesses.
Figure 39 - Top Vent - ONE 90 DEGREE ELBOW - ELBOW
CONNECTION NOT DIRECTLY AT APPLIANCE
H
Wall Firestop/
Spacer
SV4.5HF**
Example: If 20 feet of (H) hori-
zontal vent run is needed, then
4 feet minimum of (V) vertical
vent will be required.
This table shows a 1 (V) to 5
(H) ratio. For every 1 foot of
(V) vertical, you are allowed
5 feet of (H) horizontal run,
up to a maximum horizontal
run of 20 feet.
V
Ceiling
Firestop/
Spacer
SV4.5VF*
V