DuraVent DAS1 22 E30 CE Gebruiksaanwijzing - Pagina 4
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PRODUCT WEIGHTS
The average weight of the duct, per foot of length, can be estimated using the
following formula:
DCL
0.40
X
Diameter in
inches
Diameter in
DAS1
0.79
X
inches
Diameter in
DIS1
0.93
X
inches
Diameter in
DIS2
1.09
X
inches
Diameter in
DIS4
1.44
X
inches
Chimney design should provide adequate support to ensure components are not
overloaded.
THERMAL EXPANSION CALCULATIONS
Thermal expansion under normal operating temperatures can fatigue welds
causing leakage. It is necessary to calculate the thermal expansion between two
fixed points.
Formula: [Length (ft) / 100] x [Temperature Rise degrees F / 100]
Example: [50' / 100] x [75°F / 100] = 0.375" Expansion
If the computed expansions between the fixed points are greater than 0.375" -
DuraVent recommends an adjustable or bellow length be installed.
SUPPORT METHODS AND HEIGHT LIMITS
1.
Several support and guiding methods are used to anchor a chimney
against upward, downward and angular displacement.
2.
These supports and guides used with thermal expansion devices,
prevent bending stresses on the chimney elbows and joints.
3.
Supports and guiding methods and installation are described in
SECTION E-SUPPORTS. Certain limitations
installation of supports and guides. See Tables 3, 4 and 5 and
Figures showing MVS and H.
4.
It is recommended to apply an exterior grade high heat paint to any
plate supports,
full/half
aluminized outer maximum corrosion protection against the elements.
(Ex: Rust-Oleum V200 series High Heat Industrial Aerosol)
NOTE:
All the weight of the section is supported by the inner flue.
Never support any chimney pipe from the outer casing.
TABLE 3 – Height Limits for each Type of Support
Flue
Parts
Diameter Ø
(in)
5 to 22
Anchor Plate
24 to 36
5 to 22
Anchor Plate
with Length
24 to 36
Base Supported
5 to 22
Tee
24 to 36
5 to 22
Wall Support
24 to 36
WARNING Do not attach any supports to combustible
Dimensions are in inches (diameter) and feet (distance)
3
= lbs per foot
= lbs per foot
= lbs per foot
= lbs per foot
= lbs per foot
apply for proper
angle
rings,
wall supports/guides,
HEIGHT (ft)
DCL
DAS1
DIS1
DIS2
DIS4
264
133
114
97
73
161
82
70
59
45
281
142
121
103
78
172
87
74
63
48
102
52
44
37
28
63
32
27
23
17
105
53
45
39
29
64
32
28
24
18
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R
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DIS4
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