NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
C
D
Clearances To Combustibles
Framing Dimensions for Roof
Pitch
C
D
0/12
10
¹⁄₂
in.
10
¹⁄₂
in.
(267 mm)
(267 mm)
6/12
10
¹⁄₂
in.
12 in.
(267 mm)
(305 mm)
12/12
10
¹⁄₂
in.
17
³⁄₄
in.
(267 mm)
(451 mm)
Typical
Installation
Framing Specifications
775,646M Rev. N/C 05/07
Note: Framing dimensions shown assume 1/2” drywall is used to finish out the wall. 1” raised platform
beneath the appliance is included in B dimension calculation.
Drywall
Mantel
Non-Combustible
Top Of
Fireplace Opening
C
Back wall of chase/enclosure
(including any finishing materials)
Note- Venting requirements for
corner installations -
D
A
B
E
K
C
A
B
)
m
m
3
1
(
.
n
i
2
/
1
s
r
e
c
a
p
s
)
m
m
0
(
.
n
i
0
S
E
D
I
S
)
m
m
3
1
(
.
n
i
2
/
1
s
r
e
c
a
p
s
)
m
m
0
(
.
n
i
0
S
R
E
C
A
P
S
P
O
T
)
m
m
0
(
.
n
i
0
R
O
O
L
F
)
m
m
0
(
.
n
i
0
f
o
m
o
t
t
o
B
m
o
r
F
g
n
il
i
e
C
o
t
t
i
n
U
)
m
m
6
2
6
1
(
.
n
i
4
6
T
N
E
V
*
)
m
m
4
.
5
2
(
.
n
i
1
S
E
C
N
A
R
A
E
L
C
E
C
I
V
R
E
S
T
N
O
R
F
)
s
r
e
t
e
m
9
.
0
(
.
t
e
e
F
3
A
B
7
(178)
5-1/8
12-1/8
(308)
10-1/2
(267)
C
VENT FRAMING -
TOP VENT WITH ONE
6” SECTION AND
ONE 90
°
ELBOW
Framing should be constructed of 2x4 or larger lumber.
Inches (mm)
20-13/16
(130)
1/2
A
NOTE: For Secure Vent A 6” Section
SV4.5L6 (Cat. No. 77L70) Is Required
Before Installing The 90 Degree Elbow.
l
e
d
o
M
.
o
N
A
B
C
5
3
-
S
S
L
.
n
i
5
3
8
/
1
8
/
5
2
4
8
/
1
1
5
m
m
2
9
8
3
8
0
1
9
9
2
1
0
4
-
S
S
L
.
n
i
8
/
1
0
4
8
/
1
4
4
8
/
5
2
5
m
m
2
2
0
1
1
2
1
1
7
3
3
1
J
J
J
N
M
7 3/4"
N
I
L
K
M
H
l
e
d
o
M
.
o
N
A
B
C
D
E
5
3
-
S
S
L
.
n
i
5
3
8
/
1
6
1
/
5
2
6
8
/
1
9
3
8
/
1
6
3
6
1
/
1
1
5
1
m
m
2
9
8
3
8
5
1
4
9
9
8
1
9
0
0
4
0
4
-
S
S
L
.
n
i
8
/
1
0
4
6
1
/
5
7
6
8
/
5
7
4
8
/
5
8
3
6
1
/
7
7
1
m
m
2
2
0
1
0
1
7
1
0
1
2
1
1
8
9
3
4
4
H
J
L
M
N
LSS-35
36"
32-7/8"
28"
29-7/8" 17-1/2"
23-1/8"
25-1/4"
LSS-40
41"
34-3/8"
33"
31-3/8"
19"
24-9/16"
28"
K
I
J
4"
7-11/16
H
K
I
N
M
J
H
4"
I
N
M
7-11/16
Firestop/Spacer (SV4.5HF) shown
on the exterior side of the wall. It
may also be installed on the
interior side.
SV4.5 HT
Termination
10-1/2"
(267mm)
7"
(178)
5-1/8"
(130 mm)
12-1/8"
(308 mm)
Note: Centerline of Vent Piping is
NOT the Same as the Centerline of
the Framed Opening.
6 to 48 inch Vent Section,
Telescopic vent section,
Elbow or Appliance Collar
See Figure below for
Min. Distance to Base
of Appliance.
Base of Appliance
3"
(76 mm)
1"
(25.4 mm)
Adapter
SV4.5RCH
Note: All framing dimensions
calculated for 1/2” drywall at
the fireplace face. If sheathing
the chase or finishing with other
thickness materials, calcula-
tions will need to be made.
Vent Framing
Note: Nailing flange is
adjustable from 5/8” to 1/2”.
SPECTRA
™
LSS-35/40
