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1
GENERAL INSTALLATION NOTES
ROOF OPENING CHART
CHIMNEY SIZE
5"
ROOF SLOPE
x/12
A
0
11-3/8
2/12
11-3/8
4/12
11-3/8
6/12
11-3/8
8/12
11-3/8
10/12
11-3/8
12/12
11-3/8
CHIMNEY SIZE
8"
ROOF SLOPE
x/12
A
0
14-3/8
2/12
14-3/8
14-9/16
4/12
14-3/8
6/12
14-3/8
8/12
14-3/8
10/12
14-3/8
18-23/32
12/12
14-3/8
20-11/32
Table 2 - Refer to Figure 1
SIDES OF HOLE
MUST
BE VERTICAL
Figure 1
4
6"
ROOF HOLE SIZE
B
A
B
11-3/8
12-3/8
12-3/8
13-3/8
11-1/2
12-3/8
12-1/2
13-3/8
12
12-3/8
13
13-3/8
12-11/16
12-3/8
13-13/16
13-3/8
13-11/16
12-3/8
14-7/8
13-3/8
14-13/16
12-3/8
16-1/8
13-3/8
16-1/16
12-3/8
17-1/2
13-3/8
10"
ROOF HOLE SIZE
B
A
B
14-3/8
16-3/8
16-3/8
16-3/8
16-19/32
15-5/32
16-3/8
17-1/4
16-3/32
16-3/8
18-5/16
17-1/4
16-3/8
19-11/16
16-3/8
21-5/16
16-3/8
23-5/32
HOLE SIZE
DOWN
12 IN
B
ACROSS
SLOPE
A
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
INSTALLATION NOTES
1. The chimney is intended for use with solid, liquid,
and gaseous fuel burning appliances. In Canada,
7"
only 6", 7" and 8" dia. for solid fuel.
Allowable flue gas temperature:
A
B
13-3/8
13-1/2
2. The maximum height of chimney supported by the
14-3/32
various DuraVent supports are outlined on Table 1.
14-15/16
3. The supports described in this manual should only
16-1/16
be used with DuraVent's model DTC, 5", 6", 7", 8"
and 10" factory built chimneys.
17-7/16
18-29/32
4. Size the chimney in accordance with the appliance
manufacturer's instructions.
5. When a firestop is required, it is important to follow the
framing dimensions for floor openings as prescribed
in this manual. see Table 2).
6. A chimney servicing a fireplace or an incinerator shall
not serve any other appliance.
7. The chimney shall extend at least 3 ft above its point
of contact with the roof and at least 2ft higher than
any wall, roof or adjacent building within 10 ft of it.
8. The maximum height of an unguided chimney above
the roof is 5 ft. If the chimney extends more than 5 ft.
above the roof, a Universal Roof Brace (XRB) must
be used.
9. The clearance between single wall pipe and unpro-
ROOF SLOPE
tected combustible material must not be less than 18"
INCHES
(see National Building Code and NFPA 211) except:
The distance between the vertical stove pipe and the
X
ceiling may be less than 18" and will be established
by the finish support.
10. Multi-Story: Consult local building codes for re-
quirements in your area. In the U.S., the National
Fire Protection Association Standard #211 states:
"Factory-built chimneys that pass through floors of
buildings requiring the protection of vertical openings
shall be enclosed with approved walls having a fire
resistance rating of not less than one hour when
such chimneys are located in a building less than
4 stories in height, and not less than 2 hours when
such chimneys are located in a building more than 4
stories in height." In Canada, except in single-family
Maximum continuous 1200° F (650°C)
Brief forced firing 1400°F (760°C)
Tested to 2100°F (1150°C) - 30 minutes
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