5
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR MODEL DS
Inside
dia.
Anchor
Plate
(AP)
Anchor
Plate
Length
(APL)
Anchor
Plate HD
(APHD)
Wall
Support
(WS)
Wall
Support
HD
(WSHD)
Roof
support
(RS)
Guy
support
(GS)
3”
200
200
200
100
200
100
250
4”
200
200
200
100
200
100
250
5”
195
195
195
97.5
195
97.5
225
6”
190
190
190
95
190
95
190
7”
185
185
185
92.5
185
92.5
160
8”
180
180
180
90
180
90
140
9”
175
175
175
87.5
175
87.5
130
10”
170
170
170
85
170
85
115
12”
160
160
160
80
160
80
90
14”
150
150
150
75
150
75
65
16”
140
140
140
70
140
70
60
18”
130
130
130
65
130
65
55
20”
120
120
120
60
120
60
50
22”
110
110
110
55
110
55
45
24”
100
100
100
50
100
50
40
Table 3: Maximum Chimney Heigths DS. Dimensions are in feet
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR MODEL DSD
Inside
dia.
Anchor
Plate
(AP)
Anchor
Plate
Length
(APL)
Anchor
Plate HD
(APHD)
Wall
Support
(WS)
Wall
Support
HD
(WSHD)
Roof
support
(RS)
Guy
support
(GS)
3”
100
100
100
50
100
50
115
4”
100
100
100
50
100
50
115
5”
97.5
97.5
97.5
48.75
97.5
48.75
95
6”
95
95
95
47.5
95
47.5
80
7”
92.5
92.5
92.5
46.25
92.5
46.25
70
8”
90
90
90
45
90
45
65
9”
87.5
87.5
87.5
43.75
87.5
43.75
55
10”
85
85
85
42.5
85
42.5
50
12”
80
80
80
40
80
40
40
14”
75
75
75
37.5
75
37.5
30
16”
70
70
70
35
70
35
27
18”
65
65
65
32.5
65
32.5
25
20”
60
60
60
30
60
30
22
22”
55
55
55
27.5
55
27.5
21
24”
50
50
50
25
50
25
20
Table 4: Maximum Chimney Height for DSD. Dimensions are in feet
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR MODEL DSID
Inside
dia.
Anchor
Plate
(AP)
Anchor
Plate
Length
(APL)
Anchor
Plate
HD
(APHD)
Wall
Support
(WS)
Wall
Support
HD
(WSHD)
Roof
support
(RS)
Guy
support
(GS)
3”
95
95
95
47.5
95
47.5
80
4”
95
95
95
47.5
95
47.5
80
5”
92.5
92.5
92.5
46.25
92.5
46.25
70
6”
90
90
90
45
90
45
65
7”
87.5
87.5
87.5
43.75
87.5
43.75
55
8”
85
85
85
42.5
85
42.5
50
9”
N/A
N/A
N/A
N/A
N/A
N/A
N/A
10”
80
80
85
42.5
85
42.5
40
12”
75
75
75
37.5
75
37.5
30
14”
70
70
70
35
70
35
27
16”
65
65
65
32.5
65
32.5
25
18”
60
60
60
30
60
30
22
20”
55
55
55
27.5
55
27.5
21
22”
50
50
50
25
50
25
20
24”
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Table 5: Maximum Chimney Height for DSID. Dimensions are in feet
GUYING AND BRACING (DS - DSD - DSID - DSLS - DSLD)
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
for MODEL DS, DSD & DSID and see
figure 27 and 28
for DSLS & DSLD.
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
for
MODEL DS, DSD & DSID and see
figure 27 and 28
for DSLS & DSLD.
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 minimise 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.
MAXIMUM HEIGHT LIMITS FOR EACH TYPE OF SUPPORT FOR MODEL DSLS & DSLD
Parts
Flue Diameter
Ø (in)
Height (ft)
LDCS
LDCD
Anchor Plate Ventilated
(APV)
Ø26 to Ø36
161
82
Anchor plate with lenght
(APVL)
Ø26 to Ø36
172
87
Base supported Tee
Ø26 to Ø36
63
32
Wall Support Heavy Duty
(WSHD)
Ø26 to Ø36
64
32
Table 6 : Maximum Height Limits for each Type of Support for Models DSLS & DSLDD
Dimensions are in inches (diameter) and feet (distance)
