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PART NUMBERS
These instructions identify major model CAX1-(BC) parts by name and
part number.
Material Code Designations
B
Type 316 Stainless Steel
C
Type 304 Stainless Steel
P
Type 439 Stainless Steel
Example:
CAX1 36" length with inside diameter 14" made of SS 316 inner flue
and SS 304 outer casting.
CAX1
14
L36
Model
Dia.
Part
CAX1 30° elbow with inside diameter 22" made of 316L and SS 304
Outer Casing.
CAX1
22
E30
Model
Dia.
Part
CAX1 wall support for 8" diameter chimney made of stainless 439.
CAX1
8
WSHD
Model
Dia.
Part
Use only factory-supplied components. Failure to do so will void
the certification and the warranty of the chimney system.
EFFECTIVE LENGTH
CAX1-(BC) (5" to 36")
The effective length is the length of the part when it is
assembled.
Example:
Effective Length
»
L36
36-1/8"
L24
»
24-1/8"
L18
»
17-5/8"
L12
»
11-5/8"
BC
Material
BC
Material
P
Material
CLEARANCES TO COMBUSTIBLES
Table 1 shows the required MINIMUM AIRSPACE CLEARANCE TO COMBUSTIBLES.
"Combustibles" include framing lumber, drywall, plywood, paneling, insulation,
wiring, and other building materials.
Minimum Clearance to Combustibles Double Wall CAX1-(BC)
Rated
Diameter
Operating
Operating
Temp
480°F
5" to 36"
(250°C)
Table 1 - Minimum Clearances to Combustible for CAX1-(BC)
Auxiliary parts such as combination Roof Supports, Roof Thimble, Flashings, and
Wall Thimble outer shields are intended to be attached directly to the framing
or to ceilings, floors, or walls in accordance with their respective instructions.
These parts, which are installed in contact with wood or other combustibles, are
designed and tested to assure that they do not overheat at points of contact.
NOTES:
1. Unenclosed requires at least two sides open.
2. Reduced clearances may be attained by using non-combustible enclosures.
3. Combustible material is any material made of or surfaced with wood,
compressed paper, plant fibers, or other materials that are capable of being
ignited or burned. Such material shall be considered combustible even
though it is flame-proofed, fire-retardant treated, or plastered.
(Source: NFPA 54/ANSI Z223.1)
4. Design any enclosure to permit inspection of the system.
5. Do not place insulation in any required clearance spaces surrounding the
vent system unless these instructions suggest otherwise and the insulation
is specified or supplied.
6. When using Viton caulking, follow the manufactures required drying times.
Enclosed
Max
(4 sides)
(2 sides max.)
Temp
Horiz.
Vert.
Horiz.
550°F
N/A
2"
(288°C)
Unenclosed
Vert.
6"
2"
3
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