Framing Specifications - Lennox LSS-35CN Installation Instructions Manual

FIREPLACE FRAMING SPECIFICATIONS
**FRAMING WITH SQUARE HORIZONTAL TERMINATIONS (SV4.5HT)
VENT FRAMING -
TOP VENT WITH ONE
6 SECTION AND
ONE 90¡ ELBOW
B
Inches (mm)
** See the horizontal venting Figures 29 and 30 on page 17 for
restrictions on the use of the square termination (SV4.5HT).
Figure 10
M d o l e
A
N . o
. n i 5 3 8 / 1
S L - S 5 3
m m 8 2 9
. n i 0 4 1 8 /
S L - S 0 4
m m 0 1 2 2
Figure 11 Corner Framing with Square Termination (SV4.5HT)
Framing should be constructed
of 2x4 or larger lumber.
10-1/2
( )
267
5-1/8
(130)
C
20-13/16
A
1/2
A
B C D
2 6 / 5 6 1 9 3 1 8 / 6 3 1 8 /
5 1 3 8 9 4 9 9 8 1
7 6 / 5 6 1 7 4 5 8 / 8 3 5 8 /
7 1 0 1 2 1 0 1 9 1 8
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
7
(178)
12-1/8
(308)
NOTE: For Secure Vent A 6 Section
SV4.5L6 (Cat. No. 77L70) Is Required
Before Installing The 90 Degree Elbow.
E
5 1 1 / 1 6 1
E
4 0 0
7 1 / 7 6 1
4 3 4
C
Back wall of chase/enclosure
(including any finishing materials)
Framing Dimensions
M d o l e
A
N . o
. n i 5 3 1 8 / 2 4
L S - S 5 3
m m 8 2 9 0 1
. n i 0 4 1 8 / 4 4
L S - S 0 4
m m 0 1 2 2 1 1
Note-
Venting requirements for corner installations -
A
B
B C
5 8 / 1 5 1 8 /
3 8 2 1 9 9
1 8 / 2 5 5 8 /
1 2 3 1 7 3
D
9