Superior DRT3033 Installation And Operation Instructions Manual page 34

Innovative Hearth Products
Superior DRT3000 Series Direct-Vent Gas Fireplaces
TM
Table 26: Rear Vent—Three 90° Elbows
H + H + H Maximum
1 2
feet meters
5 1.524
10 3.048
15 4.572
20 6.096
V + H + H + H = 60 ft (18.288 m) maximum
1 2
H = 8 ft (2.438 m) maximum
H + H + H = 25 ft (7.62 m) maximum
1 2
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 20 ft of (H) horizontal vent run is needed, then 4 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 20 ft (6.096 m).
Table 27: Top Vent—Three 90° Elbows
H Maximum
feet meters
5
5
10
15
20
H + H = 25 ft (7.62 m) maximum
1
V + V + H + H = 60 ft (18.288 m) maximum
1 1
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 20 ft of (H) horizontal vent run is needed, then 4 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 20 ft (6.096 m).
34
H Maximum V Minimum
feet meters feet
2 0.610 1
4 1.219 2
6 1.829 3
8 2.438 4
V Minimum
feet
1.524 Elbow only
1.524 1
3.048 2
4.572 3
6.096 4
meters
0.305
0.610
H2
0.914 H
2
1.219
* When using
*When using Secure Flex , use
Secure Flex , use
®
Ceiling Firestop/Spacer SF4.5VF.
ceiling firestop/spacer
**When using Secure Flex, use
SF4.5VF.
Wall Firestop/Spacer SF4.5HF.
**
When using Secure
Flex, use wall firestop/
spacer SF4.5HF.
meters
H1
H
1
0.305
0.610
0.914
Wall firestop/spacer
1.219
Wall Firestop/Spacer
SV4.5HF **
SV4.5HF**
Wall firestop/spacer
Wall Firestop/Spacer
SV4.5HF **
SV4.5HF**
H1
H
1
®
Ceiling
Ceiling
firestop/spacer
Firestop/Spacer
SV4.5VF *
SV4.5VF*
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 wall
**
**When using Secure Flex, use
firestop/spacer SF4.5HF.
Wall Firestop/Spacer SF4.5HF.
Ceiling
Ceiling
firestop/spacer
Firestop/Spacer
SV4.5VF *
SV4.5VF*
H
H
V1
V 1
Wall firestop/spacer
Wall Firestop/Spacer
SV4.5HF **
SV4.5HF**
Installation
900285-00 11/2014
H
H
, use
®
V
V