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Innovative Hearth Products
Superior
DRT40 Direct Vent Gas Fireplace
TM
VERTICAL TERMINATION SYSTEMS (ROOF)
See Figure 23 on Page 16 and Figures 29 through
33 on Pages 18 and 19 and their associated
Vertical Vent Tables which illustrate the various
vertical venting configurations that are possible
for use with these appliances. Secure Vent
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/CGA-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 20)
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
Pages 34 and 35 - 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.
SV4.5CGV-1
SV4.5FA OR
Termination
SV4.5FB Flashing
AND SV4.5SC
STORM COLLAR
1" (25.4 mm)
Minimum
Clearance to
Combustibles
*SV4.5VF
Firestop/Spacer
40' Max
SV4.5L6/12/24/36/48
(12.2 M)
Vent Sections
*When using Secure Flex,
use Firestop/Spacer
SF4.5VF
Figure 20
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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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Table 7
Installation and Operation Instructions
900357-00, 06/2015
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Effective Vent Length
Model
Effective Length
SV4.5L6
4-1/2"
SV4.5L12
10-1/2"
SV4.5L24
22 -1/2"
SV4.5L36
34-1/2"
SV4.5L48
46-1/2"
A
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8 4
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1 1
0
1 1
0
9
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0
9
0 1
0
0 1
0 1
15
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