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VERTICAL TERMINATION SYSTEMS (ROOF)
See Figure 19 and Figures 29 through 34 on
Pages 18, 19 and 20 and their associated
Vertical Vent Tables which illustrate the various
vertical venting configurations that are possible
for use with these appliances. Secure Vent™
pipe applications are shown in these Figures;
Secure Flex™ pipe may also be used. A Vertical
Vent Table summarizes each system's minimum
and maximum vertical and horizontal length
values that can be used to design and install the
vent components in a variety of applications.
Both these vertical vent systems terminate
through the roof. The minimum vent height
above the roof and/or adjacent walls is speci-
fied in ANSI Z223.1-(latest edition) (In Canada,
the current CAN/CSA-B149.1 installation code)
by major building codes. Always consult your
local codes for specific requirements. A general
guide to follow is the Gas Vent Rule (refer to
Figure 5 on Page 6).
Vertical (Straight) Installation
(Figure 19)
Determine the number of straight vent sec-
tions required. 4-1/2" (114 mm), 10-1/2" (267
mm), 22-1/2" (572 mm), 34-1/2" (876 mm)
and 46-1/2" (1181 mm) net section lengths
are available (see Tables on this page and
Page 37 - Rigid Vent Sections). Plan the vent
lengths so that a joint does not occur at the
intersection of ceiling or roof joists. Refer to
the Vent Section Length Chart.
Figure 19
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Note: Convert inches into metric equivalent
measurement, as follows:
Millimeters (mm) = Inches x 25.4
Centimeters (cm) = Inches x 2.54
Meters (M) = Inches x .0254
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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Model
SV4.5L6
SV4.5L12
SV4.5L24
SV4.5L36
SV4.5L48
Table 7
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6
2 1
4 2
6 3
8 4
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1 -
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1 -
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1 -
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1 -
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1 -
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1
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3
0
2
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0
3
0
0
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5
0
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0
5
0
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1
0
5
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0
0
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0
4
1
0
0
0
4
0
1
0
0
4
0
1
1
5
0
0
0
0
6
0
1
0
0
6
0
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1
0
6
0
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1
6
0
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1
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5
0
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1
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1
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Effective Vent Length
Effective Length
4-1/2"
10-1/2"
22-1/2"
34-1/2"
46-1/2"
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4
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6
4
5
5
7
6
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7
5
6
7
8
8
8
8
6
9
7
7
7
9
0 1
7
8
8
0 1
1 1
8
9
1 1
9
0 1
0 1
15
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