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GENERAL INSTALLATION REQUIREMENTS
When venting Category I, II, III, or IV appliances or CAX1-(BC) must be
used for the entire length of the system. Do not mix pipe, fittings, or
joining methods from different manufacturers. See the 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 sup-
ported 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
requirements 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 inspection 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
CAX1-(BC)
a
Drain Tee Cap.
•
More than one Category II, III, IV appliance may not be connected 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 appliances. This limitation can be removed if an
engineering analysis demonstrates normal and safe operation of
appliances.
•
CAX1-(BC)
must not come in contact with plumbing or electrical
systems.
•
Maintain rated clearances to combustibles over the entire length of the
vent system.
•
CAX1-(BC)
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.
4
CHIMNEY WEIGHT
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) is necessary to calculate the proper anchor strength needed with
supports.
CHIMNEY WEIGHT IN LB/FT
INSIDE DIAMETER (in)
5
6
7
8
9
10
11
12
13
14
16
18
20
22
24
26
28
30
32
34
36
Table 2- Chimney weight for CAX1-(BC)
Example: Model CAX1-(BC) 6" diameter section of 25 feet in length, weight in lb/ft = 4.1.
Total length 4.1 x 25 = 102.5 lbs.
GENERAL INFORMATIONS FOR SUPPORTS AND GUIDES
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, and for Distance between Guides/supports, see
Table 4.
4. For Typical installation, see Figure 5.
CAX1-(BC)
3.5
4.1
4.8
5.5
6.2
6.9
7.6
8.3
9.0
9.7
11.0
12.4
13.8
15.2
16.6
17.9
19.3
20.7
22.1
23.5
24.8
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