Installation
900079-02J, 05/2019
Innovative Hearth Products
DRL3000 Linear Direct-Vent Gas Fireplaces
32
Table 21 - Venting Components Required for Various Exterior Wall Thicknesses, when using Typical Termination Kits
Vent Components Required
Exterior Wall Thickness
Termination Kit Only
6 to 9-1/4” (152 to 235 mm)
Termination Kit and 6” Vent Section (SV4.5L6)
10-3/4 to 14” (273 to 356 mm)
Termination Kit and 12” Vent Section (SV4.5L12)
16-3/4 to 20” (426 to 508 mm)
Termination Kit and Telescopic Section (SV4.5LA)
and 6” vent section (SV4.5L6)
11-3/4 to 20” (299 to 508 mm)
Horizontal Vent Figures/Tables
NOTE:
Secure Vent
®
rigid vent pipe and terminal are shown in the figures. Secure Flex
®
flexible vent pipe and
terminal may also be used.
NOTE:
Two (2) 45° elbows may be used in place of one (1) 90° elbow. The same rise to run ratios, as shown in the
venting figures for 90° elbows, must be followed if 45° elbows are used.
NOTE:
Rise per foot run ratios are acceptable all the way to level. For best results, maintain the horizontal/inclined
run in a straight (no dips), slightly elevated plane of approximately 1/4” per 1 ft (20 mm per 1 m).
NOTE:
SV4.5VF (Secure Vent), SF4.5VF (Secure Flex) firestop/spacer must be used any time vent pipe passes
through a combustible floor or ceiling. SV4.5HF (Secure Vent), SF4.5HF (Secure Flex) firestop/spacer must be used
any time vent pipe passes through a combustible wall.
WARNING
Do not join separate sections of concentric flexible vent together.
Table 22 - Top Vent—One 90° Elbow
Maximum total H
Minimum total V
feet
meters
feet
meters
2
0.610
1
0.305
4.5
1.372
3
0.914
6
1.829
4
1.220
7.5
2.286
5
1.524
9
2.743
6
1.729
15
4.572
10
3.048
V
H
Horizontal
Termination
Horizontal Firestop/
Spacer
u
Vertical Firestop/
Spacer
u
v
Total H = 15 ft (4.572 m) maximum
Total H + Total V = 60 ft (18.3 m) maximum
Install the U-shaped vent restrictor in any vent run with more than 6 ft of vertical rise. See
Page 20
for more information.
Small square termination (SV4.5HTSS) shown.
See
Table 21
as an aid in venting component selection for a particular range of exterior wall thicknesses.
15 ft total horizontal vent run requires a minimum of 10 ft total vertical vent.
u
Vertical firestop/spacer must be used anywhere vent pipe passes through a combustible floor or ceiling. Horizontal firestop/
spacer must be used anywhere vent pipe passes through a combustible wall.
v
Install the provided vent restrictor, if required.
A 90° elbow may NOT be attached directly to the appliance collar. A minimum 6” pipe section must be used between the
fireplace collar and a 90° elbow.
