Installation
900994-00K, 07/2021
Innovative Hearth Products
DRL2000 & DRL3500 Series Direct-Vent Gas Fireplaces
37
Table 21 - Top Vent—One 90° Elbow, Elbow Connection NOT at Fireplace
H Maximum
V Minimum
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 6 ft of vertical rise. See
Page 24 for more information.
See
Table 19, Page 36
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).
NOTE
:
The Wall Heatshield provided shall be installed per instructions on Page 34 (see
instruction #12 and Figure 26) DRL3535/3545 model series only.
NOTE: 35” & 45” model = Strongly recommend at least 1 ft of vertical rise directly off top of unit.
55” = 1 ft of vertical rise is required directly off unit.
H
V
When using Secure Flex,
use Firestop/Spacer
SF4.5VF.
Ceiling
Firestop/Spacer
(SV4.5VF)
When using Secure Flex,
use Firestop/Spacer
SF4.5HF.
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
Table 22 - Top Vent—Two 90° Elbows
H + H
1
Maximum
V Minimum
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 6 ft of vertical rise. See Page 24 for more
information.
See
Table 19, Page 36
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).
NOTE
:
The Wall Heatshield provided shall be installed
per instructions on Page 34 (see instruction #12 and
Figure 26) DRL3535/DRL4545 model series only.
NOTE: 35” & 45” model = Strongly recommend at least 1
ft of vertical rise directly off top of unit.
55” = 1 ft of vertical rise is required directly off unit.
V
H
H1
Wall
fi
restop/spacer SV4.5HF**
**When using Secure Flex, use
wall
fi
restop/spacer SF4.5HF.
Wall
fi
restop/spacer
SV4.5HF**
* When using Secure Flex,
use ceiling
fi
restop/spacer
SF4.5VF.
Ceiling
fi
restop
spacer SV4.5VF*
f i r e - p a r t s . c o m
