NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
9
OFFSET & RISE CHART MODEL DURATECH
CANADA (DTC)
(5" @ 10")
Figure 12
WARNING
A support must always be installed right above each
offset (two elbows) to support the chimney above the
offset.
RISE
OFFSET
Install the remaining chimney as described in the instructions for the
Interior Straight installation.
INSTALLATION CALCULATIONS
Determine the offset required in view of the obstacles that must be avoided
(see figure 12). Refer to table 8 below to determine the elbows required
as well as the insulated length needed.
ANGLE
DIA.
INCHES
ONE LENGTH BETWEEN ELBOWS
TWO LENGTHS BETWEEN ELBOWS
8
12
18
24
36
48
8 & 48
12 & 48
18 & 48
24 &48
36 & 48 48 & 48
15°
5" @ 10"
Offset
3-5/16
4-5/16
5-7/8
7-7/16
10-1/2
13-5/8
15-3/8
16-7/16
18
19-1/2
22-5/8
25-3/4
Rise
15-11/16
19-9/16
25-3/8
31-3/16
42-3/4
54-3/8
60-15/16
64-13/16
70-9/16
76-3/8
87
99-9/16
30°
5" @ 10"
Offset
7-7/16
9-7/16
12-7/16
15-7/16 21-7/16
27-7/16
30-13/16
32-13/16
35-13/16
38-13/16
44-13/16
50-13/16
Rise
20
23-1/2
28-11/16
33-7/8
44-1/4
54-11/16
60-9/16
64
69-1/4
74-7/16
84-13/16
95-1/4
45°
5" @ 10"
Offset
10-5/16
13-3/16
17-3/8
21-5/8
30-1/8
38-5/8
43-7/16
46-1/4
50-1/2
54-3/4
63-1/4
71-11/16
Rise
17-13/16
20-5/8
24-7/8
29-1/8
37-5/8
46-1/8
50-15/16
53-3/4
58
62-1/4
70-3/4
79-3/16
Table 8
OFFSET DEVIATION (CONT’D)
ROOF SUPPORT (DTC-RS)
The roof support has three possible uses:
It may be used to support a chimney from the roof. It adjusts to any
roof pitch.
It may be used on a floor, ceiling or roof above an offset to support the
chimney above the offset.
It may be used on a floor, ceiling or roof as a supplementary support when
the chimney height exceeds that of the primary support. (See maximum
length height supported, page 3).
INSTALLATION INSTRUCTIONS
With the chimney extending through the hole in the roof, ceiling or floor
and the radiation shield in place, proceed as follows (Refer to figure 15
for visual references):
Step 1.
Assemble the support collar to fit your chimney diameter, as
described on the instruction sheet supplied with the support.
Step 2.
Slip the support down over the stainless steel chimney until its
brackets rest on the roof or floor. Tighten the collar around the
chimney, then secure it by screwing the four 1/2" metal screws
(supplied) through the holes located on each side of the collar
bolts and into the chimney (Figure 32).
Step 3.
Center the chimney and nail or screw the support to the roof or
floor using (8) - 2-1/2" nails or (8) N°8 - 1-1/4" wood screws.
(figure 14).
Figure 14
3
Figure 13
SCREWS
SCREWS
RADIATION SHIELD
CONNECTOR SUPPORT
(DTC-FRSCS)
RADIATION SHIELD
CONNECTOR
(DTC-RSCI)
SCREWS
Figure 15
RAIN CAP
(DTC-VC)
STORM COLLAR
(DTC-SC)
FLASHING
(DTC-FF)
ROOF SUPPORT
(DTC-RS
2 in. MIN
6 in. MIN
