Table of Contents
Advertisement
Figure 7
*TYPICAL OFFSET INSTALLATION
*For systems with two elbow sets, the minimum height is 22
feet. The maximum height for any system is 50 feet.
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
OFFSET
RISE
A
B
48"
4 - 3/8
16 -3/8
9 - 3/4
25 - 1/2
12 - 3/4
30 - 3/4
15
34 - 3/4
18
40
21 - 1/4
46 - 1/4
23 - 3/4
49 - 1/4
27 - 3/4
56 - 3/4
1
30
60 - 3/4
33
66
1
36
71
1
38 - 1/4
75
41 - 1/4
80 - 1/4
45
86 - 3/4
46 - 3/4
89 - 1/2
1
51
97
1
53 - 1/4
101
56 - 1/4
106 - 1/4
2
59 - 1/4
111 - 1/2
1
61 - 3/4
115 - 1/2
2
64 - 3/4
120 - 3/4
2
68 - 1/4
127
1
70
130
2
74 - 1/4
137 - 1/2
1
76 - 3/4
141 - 1/2
1
79 - 3/4
146 - 3/4
Figure 8
CEILING SUPPORT PIPE
CHIMNEY LENGTH
36"
24"
18"
12"
ELBOW SET ONLY
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
1
1
2
1
1
2
1
2
1
4
FIRESTOP SPACERS (V3600FS-8DM)
Firestop spacers are required at each point where the chimney
penetrates a floor space. Their purpose is to establish and
maintain the required clearance between the chimney and the
combustible materials.
framed opening into a living space above, the firestop must be
placed onto the ceiling from below as shown in figure 10.
They also provide complete separation from one floor space to
another or attic space as required by most codes. When the
double wall pipe passes through a framed opening into an attic
space, the firestop must be placed into an attic floor as shown
in figure 11.
Figure 10
PENETRATING THE ROOF
Figure 11
- 5 -
All pipe connections between the offset and return
must be secured with two screws, only on the outer
pipe, and shall not penetrate the inner stainless.
Figure 9
ELBOW OFFSET
When the pipe passes through a
FIRESTOP SPACER
FIRESTOP SPACER
For more information, visit www.desatech.com
Hide quick links:
Advertisement
Table of Contents
