Installation
900994-00K, 07/2021
Innovative Hearth Products
DRL2000 & DRL3500 Series Direct-Vent Gas Fireplaces
31
Vertical Vent Figures/Tables
NOTE:
Secure Vent
®
rigid vent pipe is shown in the figures; Secure Flex
®
flexible vent pipe may also be 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 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.
WARNING
Do NOT join separate sections of concentric flexible vent pipe.
Figure 24 - Top Vent—Straight
Ceiling
firestop/
spacer
SV4.5VF *
When using
Secure Flex
®
,
use ceiling
firestop/spacer
SF4.5VF.
*
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 24
for more information.
Minimum 6 ft and maximum of 60 ft of vertical
venting.
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.
f i r e - p a r t s . c o m
