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127051-01_E
9
VENTING INSTALLATION
Continued
Figure 9 - Elbow Offset
Figure 8 - Ceiling Support Pipe 12S-8DM
OFFSET CHART WITH TRANSITION PIPE
OFFSET
RISE
OFFSET/RE-
TURN ELBOW
TRANSITION
PIPE
CHIMNEY LENGTH
A
B
12" 18" 36" 48"
13
3
/
4
"
32
1
/
2
"
1
1
19"
41"
1
1
1
1
22"
46
3
/
4
"
1
1
1
24
1
/
2
"
50
3
/
4
"
1
1
2
27
1
/
2
"
56
1
1
1
1
30
1
/
4
"
61
1
1
2
31
62
1
/
2
"
1
1
1
32
1
/
2
"
65"
1
1
2
1
35
1
/
2
"
70
1
/
4
"
1
1
1
2
36
1
/
4
"
71
1
/
2
"
1
1
1
1
37
72
3
/
4
"
1
1
1
38
1
/
2
"
75
1
/
2
"
1
1
3
39
1
/
4
"
76
3
/
4
"
1
1
1
1
41
1
/
2
"
80
1
/
2
"
1
1
2
1
42
1
/
4
"
81
3
/
4
"
1
1
1
1
44
1
/
2
"
85
3
/
4
"
1
1
1
1
1
45
1
/
4
"
87"
1
1
1
1
47
1
/
2
"
91"
1
1
2
1
48
1
/
4
"
92
1
/
4
"
1
1
2
49
3
/
4
"
94
3
/
4
"
1
1
2
1
1
52"
98
3
/
4
"
1
1
1
4
53
1
/
2
"
101
1
/
4
"
1
1
1
2
54
1
/
4
"
102
3
/
4
"
1
1
1
1
55
3
/
4
"
105
1
/
4
"
1
1
3
1
56
1
/
2
"
106
1
/
2
"
1
1
1
2
58
3
/
4
"
110
1
/
2
"
1
1
2
2
59
1
/
2
"
111
3
/
4
"
1
1
1
1
1
60
1
/
4
"
113"
1
1
2
61
3
/
4
"
115
3
/
4
"
1
1
1
1
2
64
3
/
4
"
120
3
/
4
"
1
1
2
2
65
1
/
2
"
122
1
/
4
"
1
1
1
2
67"
124
3
/
4
"
1
1
2
1
2
B
A
Screws
2" (51 mm)
Min.
Straps
Straps
Straps
Straps
Detail
A
Return
Elbow
Detail
B
Angle
Firestop
See Detail A
See Detail B
Ceiling Support
Pipe 12S-8DM