Lennox Hearth Products LSS-35CN Installation Instructions Manual page 19

HORIZONTAL VENT FIGURES/TABLES
(continued)
H 1
Square termination (SV4.5HT-2) shown.
See Table 3 on page 18 as an aid in venting component selection for a particular range of exterior wall thicknesses.
Figure 32
- Top Vent - TWO 90 DEGREE ELBOWS
H 1
**Wall Firestop/Spacer
(SV4.5HF)
Square termination (SV4.5HT-2) shown.
See Table 3 on page 18 as an aid in venting component selection for a particular range of exterior wall thicknesses.
Figure 33
- Top Vent - THREE 90 DEGREE ELBOWS
*Wall Firestop/Spacer
(SV4.5HF)
H
*Wall Firestop/Spacer
(SV4.5HF)
**Ceiling
Firestop/Spacer
(SV4.5VF)
Firestop/Spacer
V 1
**Wall Firestop/Spacer
(SV4.5HF)
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
V
*Ceiling
(SV4.5VF)
H
V
T A B E L D
V M H + H M a i x m
I I N M U M
1
e f t e ( m ) e f t e ( m
1 ( . 0 0 3 ) 5 3 1 4 / 1 ( 6 .
2 ( . 0 1 6 ) 0 0 1 ( . 3
3 ( . 0 1 9 ) 4 5 1 4 ( 6 .
4 1 ( 2 . ) 2 0 2 ( . 6
V + H + H = 0 4 f e e ( t 2 1 4 . m )
1
H + H = 0 2 e f t e 6 ( 2 . m ) M a
1
T A B E L E
V M H M a i x m u
I I N M U M
e f t e ( m ) e f t e ( m
1 ( . 0 0 3 ) 5 3 1 4 / 1 ( 6 .
2 ( . 0 1 6 ) 0 0 1 ( . 3
3 ( . 0 1 9 ) 4 5 1 4 ( 6 .
4 1 ( 2 . ) 2 0 2 ( . 6
V + V + H + H = 0 4 f e e ( t 2 1 4 .
1 1
M a . x
H + H = 0 2 e f t e 6 ( 2 . m ) M a
1
u m
)
) 8
) 1
) 5
) 2
M a . x
. x
m
)
) 8
) 1
) 5
) 2
m )
. x
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