Table of Contents
Advertisement
MAXIMUM HEIGHT LIMITS FOR EACH TYPE OF SUPPORT FOR MODEL CAX1-(BC)
Parts
Anchor Plate (AP)
(For non-combustible application only)
Anchor Plate with Length (APL)
(For non-combustible application only)
Anchor Plate Ventilated
(APV)
Anchor plate with length (APVL)
Base supported Tee (T90 or T45)
Wall Support Heavy Duty (WSHD)
Table 3 : Maximum Height Limits for each Type of Support for CAX1-(BC)
GUYING AND BRACING
1. Proper guying and bracing is essential for part of the vent that extends
above the roof or parapet wall. The vent at this point is subject to wind
conditions and needs special attention for proper stabilization. See Figure 6.
2. If the vent above the roof does not exceed dimension H, no special
guying or bracing is required. However, to protect the flashing from lateral
movement, a guide must be installed at the roof level. See Figure 6.
3. For vent height above the roof that needs guying or bracing, a support, a
small length and a expansion length must be installed near the roof level to
absorb the thermal expansion and minimize this effect on the guy wire or
brace.
4. When using guy wire, the cable must be slightly slack or loose to allow
thermal expansion.
5. When using rigid bracing, the maximum vertical height between supports
must be reduced to 5' to compensate thermal expansion.
Flue Diameter
Height (ft)
Ø (in)
Ø5 to Ø22
133
Ø24 to Ø36
82
Ø5 to Ø22
142
Ø24 to Ø36
87
Ø5 to Ø22
133
Ø24 to Ø36
82
Ø5 to Ø22
142
Ø24 to Ø36
87
Ø5 to Ø22
52
Ø24 to Ø36
32
Ø5 to Ø22
53
Ø24 to Ø36
32
SUPPORT AND GUIDE SPACING FOR MODEL CAX1-(BC)
Inside
MVS
diameter
Interior (ft.)
Exterior (ft)
(in)
5
10
6
10
7
10
8
10
9
10
10
10
11
10
12
10
13
10
14
10
16
10
18
10
20
10
22
10
24
10
26
20
20
28
20
20
30
20
20
32
20
20
34
20
20
36
20
20
Table 4: Support and Guide Spacing for Model CAX1-(BC).
MVS : Maximum Vertical Spacing between Guides/Supports
MHS: Maximum Horizontal Spacing between Guides/Supports
MDE: Maximum Distance between Elbows
H: Maximum Freestanding Height above the Roof
S: Maximum Suspended Length
MHS (ft)
MDE (ft)
H (ft)
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
15
15
13
15
15
13' 6"
15
15
13' 9"
15
15
14' 3"
15
15
14' 6"
15
15
15
S (ft)
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
5
Advertisement
Table of Contents
