A
WARNING:
The opening in the collar around the
chimney at the top of the fireplace must not be obstrncted.
Never use blown insulation to fill the chimney enclosure.
INSTRUCTIONS '\'HEN ELBOW OFFSET (30E-8DM)
OF CHIMNEY IS NEEDED
l. To achieve desired offset, you may install combinations of
12", J 8"', 24", 36" and 48" length of double wall pipe (SEE
SINGLE OFFSET CHART AND FIGURE 6).
2. Chimney weight above offset rests on return elbow.
Straps must be securely nailed to rafters or joists (see figure 7,
details a & b).
3. Maximum length of pipe between supports (return elbow
or 12S-8DM) is 6' of angle run. Maximum of two (2) 6' angle
run sections per chimney system (see figure 6).
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
OFFSET
RISE
CHIMNEY LENGTH
A
B
48"'
I
36"
7
24"
18"
I
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
•0
1
1
21 - 1/4
46 - 1/4
1
23 - 3/4
49 - 114
1
1
27 - 3/4
56 - 3/4
1
30
60 - 314
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 - 1/0
111-1/2
1
1
1
61 - 3/4
115-1/2
2
1
64 - 314
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
1• 1 - 1/2
-1
2
1
79 - 3/4
146 - 3/4
4
I
)clAL ;.
Figure 7
CEILING SUPPORT PIPE
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.
. .
- r ,
..
,..
- 5 -
Figure 8
7
I
A II pipe connections between the offset ;;md return
must be cured with r
w
o screws. only on ihc outer
pipe. omd shall not penetrate the inner stainless.
ELBOW OFFSET
When the pipe passes through a framed opening into a living
space above, the firestop must be placed onto the ceiling from
_below as shown i1
f
figur 9.
-
_
_
-
,
.
::
.,
.
They also provide complete-separation f
r
om one floo(-spacn :·
another or attic space a required by most codes. When th
double wall pipe passes through a framed opening into an atti
space, the:firestop musr-be pl'aced into an attic iloor as shown;·
in figure I 0.
- -
Figure 9
Figure 10
lJVJNC S;;.J.C.[
1..&0 £ C Uf\G
FIRESTOP SP ACER
FIRESTOP SP ACER
For more
i11formatio11,
visit www.dc5atech.com
