Superior Fireplaces DRT3500 Series Installation And Operation Instruction Manual page 34

Innovative Hearth Products
DRT3500 Series Direct-Vent Gas Fireplaces
Table 23 - Top Vent—One 90° Elbow, Elbow Connection NOT at Fireplace
H Maximum
feet
5
10
15
25
Install the U-shaped vent restrictor in any vent run with more than 4 ft of vertical rise. See Page
22 for more information.
See Table 20, Page 33 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 Maximum
1
feet meters
5 1.524
10 3.048
15 4.572
25 7.62
V + H + H = 60 ft (18.288 m) maximum
1
H = 8 ft (2.438 m) maximum
H + H = 25 ft (7.62 m) maximum
1
Install the U-shaped vent restrictor in any vent run with more than 4 ft of vertical rise. See
Page 22 for more information.
See Table 20 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 Maximum
1
feet
3
5
10
15
25
V + H + H = 60 ft (18.288 m) maximum
1
H + H = 25 ft (7.62 m) maximum
1
Install the U-shaped vent restrictor in any vent run with more than 4 ft of vertical
rise. See Page 22 for more information.
See Table 20, Page 33 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).
34
meters feet
1.524 1
3.048 2
4.572 3
7.62 5
H Maximum
feet meters
2 0.610
4 1.219
6 1.829
10 3.048
V Minimum
meters feet
0.91 Elbow only
1.524 1
3.048 2
4.572 3
7.62 5
V Minimum
meters
0.305
When using Secure Flex,
0.610
use Firestop/Spacer
SF4.5VF.
0.914
When using Secure Flex,
use Firestop/Spacer
1.524
SF4.5HF.
V Minimum
feet meters
1 0.305
2 0.610
3 0.914
5 1.524
Wall firestop/
Wall Firestop/
Spacer
SV4.5HF**
meters
0.305
0.610
0.914
H1
H 1
1.524
*
When using Secure
Note - When using
Secure Flex
Flex , use ceiling TM
®
Firestop/Spacer SF4.5VF.
firestop/spacer
SF4.5VF.
When using Secure Flex,
** When using Secure
use Firestop/Spacer
SF4.5HF.
Flex, use wall
firestop/spacer
SF4.5HF.
H
H
Min. One Ceiling
Foot Vent
firestop/
Section
spacer
Required
SV4.5VF *
Wall firestop/
Wall Firestop/Spacer
spacer SV4.5HF **
(SV4.5HF)
* When using Secure Flex , use
®
Ceiling
ceiling firestop/spacer SF4.5VF. Firestop/Spacer
(SV4.5VF)
** When using Secure Flex, use
wall firestop/spacer SF4.5HF.
H
H
H1
H 1
Ceiling
firestop/
Ceiling
spacer
Firestop/Spacer
SV4.5VF *
SV4.5VF*
spacer
SV4.5HF **
V
V
* When using Secure Flex
*When using Secure Flex , use
ceiling firestop/spacer SF4.5VF.
Ceiling Firestop/Spacer SF4.5VF.
**
When using Secure Flex, use
**When using Secure Flex, use
wall firestop/spacer SF4.5HF.
Wall Firestop/Spacer SF4.5HF.
Wall firestop/spacer
Wall Firestop/Spacer
SV4.5HF **
(SV4.5HF)
H
H
Wall firestop/
Wall
spacer
Firestop/Spacer
, use
SV4.5HF **
(SV4.5HF)
Ceiling firestop/
Ceiling
spacer SV4.5VF *
Firestop/Spacer
(SV4.5VF)
Min. One Foot Vent
Section Required
Installation
900683-01F, 10/2018
V V
, use
®
®
V
V