Installation
900079-02J, 05/2019
Innovative Hearth Products
DRL3000 Linear Direct-Vent Gas Fireplaces
27
Vertical Vent Figures/Tables
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 anytime vent pipe passes
through a combustible floor or ceiling. SV4.5HF (Secure Vent), SF4.5HF (Secure Flex)firestop/spacer must be used
anytime vent pipe passes through a combustible wall.
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:
An elbow is acceptable as 1 ft of vertical rise, except where an elbow is the only vertical component in the
system.
WARNING
Do NOT join separate sections of concentric flexible vent pipe.
Figure 22 - Top Vent—Straight
Vertical Firestop/
Spacer
u
v
See
Clearance to
combustibles on
Page 24
Secure Vent
Vent Sections
Max. 60 ft
(18 m)
Min. 6 ft
(1.8 m)
Vertical
Termination
Flashing and
Storm Collar
Install the U-shaped vent restrictor in any vent run with more than 6 ft of vertical rise. See
Page 21
for more information.
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.
