www.Superiorfireplaces.US.com
126607-01A
8
Figure 10 - Lineal Gain
WARNING: The opening in collar around chimney
at top of fireplace must not be obstructed. Never use
blown insulation to fill chimney enclosure.
VENTING INSTALLATION
Continued
USING CHIMNEY OFFSETS
To achieve desired offset, you may install combinations of 12", 18",
36" and 48" length of double wall pipe (see offset chart and Figure
11, this page and Figure 12, page 9).
Chimney weight above offset rests on return elbow. Straps must
be securely nailed to rafters or joists (see Figure 13, details A & B,
page 9).
Maximum length of pipe between supports (return elbow or chimney
support V12S-8DM) is 6' of angled run. Maximum of two 6' angled
run sections per chimney system.
Hemmed
Ends
(Female)
8" Stainless
Inner Pipe
12
3
/
8
"
Galvanized
Outer Pipe
Lanced
Ends
(Male)
LINEAL GAIN
PART NO.
DESCRIPTION
GAIN
36"
Fireplace
42"
12-8DM
Pipe Section
10
5
/
8
"
18-8DM
Pipe Section
16
5
/
8
"
24-8DM
Pipe Section
23
5
/
8
"
36-8DM
Pipe Section
34
5
/
8
"
48-8DM
Pipe Section
46
5
/
8
"
RT-8DM Round Termination
6
7
/
8
"*
RTL-8DM Round Termination
7
3
/
4
"*
RTT-8DM Round Termination
with Slip Section
6
7
/
8
" to
23
1
/
8
"*
RTTL-8DM Round Termination
with Slip Section
7
3
/
4
" to
21
1
/
2
"*
ET-8DM
Square Chase
Termination
12"*
ETL-8DM Square Chase with
Slip Section
7" to 15"*
ETO-8DM
Square Chase
with Mesh
12"*
ETLO-8DM
Square Chase with
Mesh and Slip
Section
12" to
21
1
/
2
"*
*Lineal Gain for Terminations is measured to
Flue Gas Outlet Height.
Figure 11 - Raise and Offset
B
A
Screws
OFFSET
RISE
CHIMNEY LENGTH
A
B
48"
36"
24"
18"
12"
4
3
/
8
"
16
3
/
8
"
ELBOW SET ONLY
9
3
/
4
"
25
1
/
2
"
1
12
3
/
4
"
30
3
/
4
"
1
15"
34
3
/
4
"
1
18"
40"
1
1
21
1
/
4
"
46
1
/
4
"
1
23
3
/
4
"
49
1
/
4
"
1
1
27
3
/
4
"
56
3
/
4
"
1
30"
60
3
/
4
"
1
1
33"
66"
1
1
36"
71"
1
1
38
1
/
4
"
75"
2
41
1
/
4
"
80
1
/
4
"
1
1
1
45"
86
3
/
4
"
2
46
3
/
4
"
89
1
/
2
"
1
1
1
51"
97"
1
1
53
1
/
4
"
101"
2
1
56
1
/
4
"
106
1
/
4
"
2
59
1
/
4
"
111
1
/
2
"
1
1
1
61
3
/
4
"
115
1
/
2
"
2
1
64
3
/
4
"
120
3
/
4
"
2
1
68
1
/
4
"
127"
1
2
70"
130"
2
1
1
74
1
/
4
"
137
1
/
2
"
1
2
1
76
3
/
4
"
141
1
/
2
"
1
2
1
79
3
/
4
"
146
3
/
4
"
4
OFFSET CHART (22-50 FT. SYSTEM HEIGHT
)
