Lennox Hearth ADAGIO-EN - Manual (Page 21)

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
21
V
H
H 1
� Wall Firestop/Spacer
(SV4.5HF)
� Wall Firestop/Spacer
(SV4.5HF)
� When using Secure Flex,
use Firestop/Spacer
SF4.5HF.
� Ceiling
Firestop/Spacer
(SV4.5VF)
� Note - When using
Secure Flex TM , use
Firestop/Spacer SF4.5VF.
Table E
H + H
1
Maximum V Minimum
feet (meter) feet (meter)
3 (0.914) Elbow Only
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 + H
1
= 40 feet (12.2 m) Max.
H + H
1
= 20 feet (6.096 m) Max.
Figure 32 - Top Vent - TWO 90 DEGREE ELBOWS
Square termination (SV4.5HT-2) shown.
See Table 8 on Page 20 as an aid in venting
component selection for a particular range of
exterior wall thicknesses.
HORIZONTAL VENT FIGURES / TABLES (CONTINUED)
Example: If 20 feet of (H + H
1
) horizontal 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+ H
1
) horizontal run, up
to a maximum horizontal run of 20 feet.
An elbow is acceptable as 1 foot of vertical rise except where
an elbow is the only vertical component in the system. See
Figure 30.
V
H
H 1
V 1
� Wall Firestop/Spacer
(SV4.5HF)
� Ceiling
Firestop/Spacer
(SV4.5VF)
� When using Secure Flex,
use Firestop/Spacer
SF4.5VF.
� When using Secure
Flex, use Firestop/Spacer
SF4.5HF.
� Wall Firestop/Spacer
(SV4.5HF)
Example: If 20 feet total (H+H
1
) horizontal 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+
H
1
) horizontal run, up to a maximum horizontal
run of 20 feet.
An elbow is acceptable as 1 foot of vertical rise except
where an elbow is the only vertical component in
the system. See Figure 30.
Figure 33 - Top Vent - THREE 90 DEGREE ELBOWS
See Table 8 on Page
20 as an aid in venting
component selection for
a particular range of exte-
rior wall thicknesses.
Table F
H + H
1
Maximum V Minimum
feet (meter) feet (meter)
5 (1.524) Elbow Only
5 (1.524) 1 (0.305)
10 (3.048) 2 (0.610)
15 (4.572) 3 (0.914)
20 (6.096) 4 (1.219)
H + H
1
= 20 feet (6.096 m) Max.
V + V
1
+ H + H
1
= 40 feet (12.192 m) Max.
Square termination
(SV4.5HT-2) shown.