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107777-01E 9
Figure 11 - Elbow Offset
B
A
Screws
VENTING INSTALLATION
Continued
Figure 10 - Ceiling Support Pipe 12S-8DM
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
RISE
A B 48" 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)