Innovative Hearth Products
Superior
DRT40 Direct Vent Gas Fireplace
TM
HORIZONTAL VENT FIGURES/TABLES (continued)
H 1
Wall Firestop/
Spacer
SV4.5HF**
V
Square termination (SV4.5HT-2) shown.
Figure 40 - Rear Vent - TWO 90 DEGREE ELBOWS
Wall Firestop/Spacer
H 1
*When using Secure Flex, use
Ceiling Firestop/Spacer SF4.5VF.
**When using Secure Flex, use
Wall Firestop/Spacer SF4.5HF.
Square termination (SV4.5HT-2) shown.
See Table 8 on Page 22 as an aid in venting component
selection for a particular range of exterior wall thicknesses.
Figure 41 - Top Vent - TWO 90 DEGREE ELBOWS
H
Ceiling
Firestop/Spacer
SV4.5VF*
*When using Secure Flex , use
Ceiling Firestop/Spacer SF4.5VF.
**When using Secure Flex, use
Wall Firestop/Spacer SF4.5HF.
SV4.5HF**
H
Wall Firestop/Spacer
SV4.5HF**
Ceiling Firestop/Spacer
SV4.5VF*
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
H
Maximum
+H
1
feet
(meters)
(1.524)
5
(3.048)
10
(4.572)
15
(6.096)
20
H + H 1 = 20 feet (6.096 meters) Max.
Example: If 20 feet of (H) horizontal vent run is needed,
then 4 feet minimum of (V) vertical vent will be required.
This table shows a 1 (V) to 5 (H) ratio. For every 1 foot of
(V) vertical, you are allowed 5 feet of (H) horizontal run,
up to a maximum horizontal run of 20 feet.
®
See Table 8 on page 22 as an aid in venting component
selection for a particular range of exterior wall thicknesses.
V
Installation and Operation Instructions
TABLE H
H Maximum
V Minimum
(meters)
feet
feet
2
(0.610)
1
4
(1.219)
2
6
(1.829)
3
8
(2.438)
4
V + H + H 1 = 40 feet (12.2 m) Max.
H = 8 feet (2.438 meters) Max.
TABLE J
H
Maximum
V Minimum
+ H
1
feet
(meters)
feet
(0.914)
Elbow Only
3
(1.524)
5
1
(3.048)
10
2
(4.572)
15
3
20
(6.096)
4
H
V +
+ H
= 40 feet (12.2 m) Max.
1
H
+ H
= 20 ft. (6.096 m) Max.
1
Example: If 20 feet of (H) horizontal vent run
is needed, then 4 feet minimum of (V) vertical
vent will be required.
This table shows a 1 (V) to 5 (H) ratio. For
every 1 foot of (V) vertical, you are allowed 5
feet of (H) horizontal run, up to a maximum
horizontal run of 20 feet.
An elbow is acceptable as 1 foot of vertical
rise except where an elbow is the only vertical
component in the system. See Figure 38.
900357-00, 06/2015
(meters)
(0.305)
(0.610)
(0.914)
(1.219)
(meters)
(0.305)
(0.610)
(0.914)
(1.219)
23