5
INSTRUCTIONS WHEN OFFSET OF CHIMNEY IS
NEEDED
TO INSTALL ELBOWS
1.
To achieve desired offset, you may install combinations
of 12”, 18”, 24”, 36” and 48” length of double wall pipe
(SEE SINGLE OFFSET CHART & FIGURE 16 & 17).
2.
Chimney weight above offset rests on return elbow.
Strops must be securely nailed to rafters or joists (SEE
FIGURE 15 DETAILS A & B).
3.
Maximum length of pipe between supports (return elbow
or 12S-8DM) is 6’ of angled run. Maximum of two (2) 6’
angled run sections per chimney system (SEE FIGE 17).
Figure
17 TYPICAL
OFFSET
INSTALLATION
Figure 15
OFFSET
RISE
A
B
48"
36"
24"
18"
12"
4 - 3/8
16 -3/8
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
CHIMNEY LENGTH
All joints between offset
Shall be secured with two
Screws, only on the outer
Pipe, and shall not penetrate
The inner stainless.
Figure 16
