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GENERAL INSTALLATION REQUIREMENTS
When venting Category I, II, III, or IV appliances or TYPE L vented appliance,
DuraSeal® must be used for the entire length of the system. Do not mix
pipe, fittings, or joining methods from different manufacturers. See the
DuraSeal® catalog for a complete list of parts and products. Every
vent system must be planned and installed for optimum performance and
safety. The venting system must be free to expand and contract and must
be supported in accordance with these instructions (Check for unrestricted
vent movement through walls, ceilings, and roof penetrations). Refer to the
gas appliance manufacturer's instructions to determine venting require-
ments and limitations with respect to installation and use of the appliance.
It is the responsibility of the installer to contact local building and
fire officials concerning any installation restrictions and/or inspec-
tion requirements that may apply. Permits may be required before
starting an installation.
•
If required by the appliance manufacturer, a Drain Tee Cap must be located as
close as possible to the appliance flue outlet. Depending on the arrangement
of the vent, more than one drain may be required. Unless a Drain Tee
Cap is supplied with the appliance, install a DuraSeal® Drain Tee Cap.
•
More than one Category II, III, IV appliance may not be conneted into the
same vent system, unless the appliance manufacturer specifically approved
such a system and the appliance are designed for multiple venting. Cat. II, III
or IV appliances MAY NOT be common vented with Cat. I, natural draft ap-
pliances. This limitation can be removed if an engineering analysis demon-
strates normal and safe operation of appliances.
•
DuraSeal® must not come in contact with plumbing or electrical systems.
•
Maintain rated clearances to combustibles over the entire length of the vent
system.
•
DuraSeal® shall not be routed into, through, or within any vent, such as an
existing masonry or factory-built chimney, that is connected to another
appliance.
•
Transition parts are available to connect model DS & DSD to DSLS & DSLD
larger size. Refer to DuraVent technical assistance for guidance.
4
CHIMNEY WEIGHT (DS-DSD-DSID-DSLS-DSLD)
Chimney weight is given in pounds per foot for each diameter. It is important
to know the weight of the chimney section for chimney support or guiding.
Chimney weight (table 2) along with the maximum chimney height (table
3, 4, 5, & 6) is necessary to calculate the proper anchor strength needed
with supports.
CHIMNEY WEIGHT IN LB/FT
INSIDE DIAMETER
DS
3"
.7
4"
0.9
5"
1.1
6"
1.3
7"
1.5
8"
1.7
9"
1.9
10"
2.1
12"
2.6
14"
3.6
16"
4.1
18"
4.6
20"
5.1
22"
5.7
24"
6.2
26"
N/A
28"
N/A
30"
N/A
32"
N/A
34"
N/A
36"
N/A
Table 2- Chimney weight
Example: Model DuraSeal DSD 6" diameter section of 25 feet in length, weight in lb/ft
= 3. Total length 3 x 25 = 75lbs.
GENERAL INFORMATIONS FOR SUPPORTS AND GUIDES
(DS-DSD-DSID-DSLS-DSLD)
1. Several support and guiding methods are used to anchor a chimney against
upward, downward and angular placement.
2. These supports and guides prevent bending stresses on the chimney
elbows and joints.
3. Certain limitations apply for proper installation of supports and guides.
For supports, see Table 3, 4, 5 & 6, and for Distance between Guides/
supports, see Table 7 & 8.
4. For Typical installation, see Figure 5 & 6 for Models DS, DSD & DSID and
Figure 26 & 27 for Models DSLS & DSLD.
DSD
DSID
DSLS
1.7
2.1
N/A
2.1
2.6
N/A
2.6
3.0
N/A
3.0
3.4
N/A
3.4
3.9
N/A
3.8
4.3
N/A
4.3
N/A
N/A
4.7
5.5
N/A
6.2
7.0
N/A
7.7
8.2
N/A
8.7
9.3
N/A
9.8
10.3
N/A
10.8
11.3
N/A
11.8
12.4
N/A
12.8
N/A
N/A
N/A
N/A
10.4
N/A
N/A
11.2
N/A
N/A
12.0
N/A
N/A
12.3
N/A
N/A
13.6
N/A
N/A
14.4
DSLD
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
17.9
19.3
20.7
22.1
23.5
24.8
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