Superior DRT3033 - Page 33

Installation
900285-00 11/2014
Innovative Hearth Products
Superior
TM
DRT3000 Series Direct-Vent Gas Fireplaces
33
Table 23: Top Vent—One 90° Elbow, Elbow Connection NOT at Fireplace
H Maximum V Minimum
H
V
Ceiling
Firestop/Spacer
(SV4.5VF)
Wall Firestop/Spacer
(SV4.5HF)
Min. One
Foot Vent
Section
Required
When using Secure Flex
®
, use
ceiling firestop/spacer SF4.5VF.
When using Secure Flex, use wall
firestop/spacer SF4.5HF.
*
**
Wall firestop/spacer SV4.5HF **
Ceiling
firestop/
spacer
SV4.5VF *
H
V
feet meters feet meters
5 1.524 1 0.305
10 3.048 2 0.610
15 4.572 3 0.914
25 7.62 5 1.524
Install the U-shaped vent restrictor in any vent run with more than 4 ft of vertical rise. See
Page 21 for more information.
See Table 21 as an aid in venting component selection for a particular range of exterior wall thicknesses.
If 25 ft of (H) horizontal vent run is needed, then 5 ft minimum of (V) vertical vent will be required.
This table shows a 1 (V) to 5 (H) ratio. For every 1 ft of (V) vertical, you are allowed 5 ft of (H)
horizontal run, up to a maximum horizontal run of 25 ft (7.62 m).
Table 24: Rear Vent—Two 90° Elbows
H + H
1
Maximum H Maximum V Minimum
*When using Secure Flex , use
Ceiling Firestop/Spacer SF4.5VF.
**When using Secure Flex, use
Wall Firestop/Spacer SF4.5HF.
Wall Firestop/
Spacer
SV4.5HF**
Ceiling
Firestop/Spacer
SV4.5VF*
®
V
H
H
1
When using Secure Flex
®
, use
ceiling firestop/spacer SF4.5VF.
When using Secure Flex, use
wall firestop/spacer SF4.5HF.
*
**
Wall firestop/
spacer
SV4.5HF **
Ceiling
firestop/
spacer
SV4.5VF *
H
V
H1
feet meters feet meters feet meters
5 1.524 2 0.610 1 0.305
10 3.048 4 1.219 2 0.610
15 4.572 6 1.829 3 0.914
25 7.62 10 3.048 5 1.524
V + H + H
1
= 60 ft (18.288 m) maximum
H = 8 ft (2.438 m) maximum
H + H
1
= 25 ft (7.62 m) maximum
Install the U-shaped vent restrictor in any vent run with more than 4 ft of vertical rise. See
Page 21 for more information.
See Table 21 as an aid in venting component selection for a particular range of exterior wall thicknesses.
If 25 ft of (H) horizontal vent run is needed, then 5 ft minimum of (V) vertical vent will be required.
This table shows a 1 (V) to 5 (H) ratio. For every 1 ft of (V) vertical, you are allowed 5 ft of (H)
horizontal run, up to a maximum horizontal run of 25 ft (7.62 m).
Table 25: Top Vent—Two 90° Elbows
H + H
1
Maximum V Minimum
V
H
H
1

Wall Firestop/Spacer
(SV4.5HF)

When using SecureFlex,
use Firestop/Spacer
SF4.5HF.

Ceiling
Firestop/Spacer
(SV4.5VF)

Note - When using
Secure Flex
TM
, use
Firestop/Spacer SF4.5VF.

Wall
Firestop/Spacer
(SV4.5HF)
Min. One Foot Vent
Section Required
Wall firestop/spacer
SV4.5HF **
Ceiling
firestop/spacer
SV4.5VF *
H
V
H1
Wall firestop/spacer
SV4.5HF **
When using Secure
Flex
®
, use ceiling
firestop/spacer
SF4.5VF.
When using Secure
Flex, use wall
firestop/spacer
SF4.5HF.
*
**
feet meters feet meters
3 0.91 Elbow only
5 1.524 1 0.305
10 3.048 2 0.610
15 4.572 3 0.914
25 7.62 5 1.524
V + H + H
1
= 60 ft (18.288 m) maximum
H + H
1
= 25 ft (7.62 m) maximum
Install the U-shaped vent restrictor in any vent run with more than 4 ft of vertical rise.
See Page 21 for more information.
See Table 21 as an aid in venting component selection for a particular range of exterior wall
thicknesses.
If 25 ft of (H) horizontal vent run is needed, then 5 ft minimum of (V) vertical vent will
be required.
This table shows a 1 (V) to 5 (H) ratio. For every 1 ft of (V) vertical, you are allowed 5 ft of (H)
horizontal run, up to a maximum horizontal run of 25 ft (7.62 m).