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LENNOX HEARTH PRODUCTS • MONTEBELLO
HORIZONTAL VENT FIGURES/TABLES
(continued)
H 1
See Table 9 on Page 19 as an aid in venting component selection for a particular range of
exterior wall thicknesses.
Figure 30:
Top Vent—Two 90 Degree Elbows
H 1
Wall Firestop/Spacer
(SV8HF)
See Table 9 on Page 19 as an aid in venting component selection for a particular range of exterior wall thicknesses.
Figure 31:
Top Vent—Three 90 Degree Elbows
20
DLX DIRECT VENT GAS FIREPLACES (MDLX40/45) • INSTALLATION INSTRUCTIONS
®
Wall Firestop/Spacer
(SV8HF)
H
Wall Firestop/Spacer
(SV8HF)
Ceiling
Firestop/Spacer
(SV8BF)
Ceiling
Firestop/Spacer
(SV8BF)
H
V 1
Wall
Firestop/Spacer
Firestop/Spacer
(SV8HF)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
V
V
Ceiling
(SV8BF)
Table D
V Minimum
H
Maximum
+ H
1
feet
(meter)
feet
3.5
(1.07)
2.5
6.5
(1.98)
3.5
8.5
(2.6)
4.5
10.5
(3.2)
5.5
12.5
(3.8)
6.5
14.5
(4.4)
7.5
16.5
(5.0)
8.5
18.5
(5.6)
9.5
20
(6.0)
10
H
V +
+ H
= 40 feet (12.4 m) Max.
1
H
+ H
= 20 ft. (6.2 m) Max.
1
Table E
H
+ H
= 20 feet (6.2 m) Max.
1
V
H
+ V
+
+ H
= 40 ft. (12.4 m) Max.
1
1
V = 2.5 feet Min. (0.762 m)
V
+ V
= 11 feet (3.35 m) Min. for MDLX40
1
V
+ V
= 10.5 feet (3.2 m) Min. for MDLX45
1
(meter)
(0.762)
(1.07)
(1.37)
(1.68)
(1.98)
(2.3)
(2.6)
(2.9)
(3.0)
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