Venting installation, Continued – FMI (V)B42LI User Manual
Page 9
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109036-01M
9
Figure 11 - Elbow Offset
B
A
Screws
Figure 10 - Ceiling Support Pipe 12S-8DM
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)
2" Min.
Straps
Straps
Straps
Straps
Detail A
Return Elbow
Detail B
Angle
Firestop
See Detail A
See Detail B
Ceiling Support
Pipe 12S-8DM
VENTING INSTALLATION
Continued
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