Installation
900994-00K, 07/2021
Innovative Hearth Products
DRL2000 & DRL3500 Series Direct-Vent Gas Fireplaces
38
Table 23 - Top Vent—Three 90° Elbows
H Maximum
V Minimum
feet
meters
feet
meters
5
1.524
Elbow only
5
1.524
1
0.305
10
3.048
2
0.610
15
4.572
3
0.914
20
6.096
4
1.219
H + H
1
= 25 ft (7.62 m) maximum
V + V
1
+ H + H
1
= 60 ft (18.288 m) maximum
Install the U-shaped vent restrictor in any vent run with more than 4
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 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).
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.
*
When using
Secure Flex
, use
Ceiling Firestop/Spacer
SF4.5VF
.
**
When using
Secure Flex
, use
Wall Firestop/Spacer
SF4.5HF
.
Ceiling
Firestop/Spacer
SV4.5VF*
Wall Firestop/Spacer
SV4.5HF**
V
H
V1
Wall Firestop/Spacer
SV4.5HF**
1
H
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.
*
**
Wall firestop/
spacer SV4.5HF **
Ceiling
firestop/spacer
SV4.5VF *
H
V
H1
V1
f i r e - p a r t s . c o m
