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Innovative Hearth Products
DRC3000-B Series Direct-Vent Gas Fireplaces
Vertical Vent Figures/Tables
NOTE: Secure Vent
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.
Do NOT join separate sections of concentric flexible vent pipe.
Figure 22 - Top Vent—Straight
Install the U-shaped vent restrictor in any vent run with more than
6 ft of vertical rise. See Page 23 for more information.
Minimum 6 ft and maximum of 60 ft of vertical
venting.
28
rigid vent pipe is shown in the figures; Secure Flex
®
Ceiling
60 ft (18.3 m)
Firestop/
Maximum
Spacer
SV4.5VF *
*
When using
Secure Flex
use Ceiling
Firestop/Spacer
SF4.5VF.
®
WARNING
Table 16 - Rear Vent—One 90° Elbow
V
H Maximum
Feet
2
,
®
4
6
8
V + H = 60 ft (18.3 m) maximum
H = 8 ft (2.4 m) maximum
Install the U-shaped vent restrictor in any vent run with more than 6
ft of vertical rise. See Page 23 for more information.
If 8 ft of (H) horizontal vent run is needed, then 4 ft
(straight section) minimum of (V) vertical vent will be
required.
This table shows a 1 (V) to 2 (H) ratio. For every 1 ft of
(V) vertical, you are allowed 2 ft of (H) horizontal run, up
to a maximum horizontal run of 8 ft.
Minimum 6 ft of vertical venting.
901191-00C, 07/2023
flexible vent pipe may also be used.
Ceiling Firestop/
Spacer SV4.5VF *
*
When using Secure Flex
use Ceiling Firestop/
Spacer SF4.5VF.
H
V Minimum
Meters
Feet
0.610
1
1.219
2
1.829
3
2.438
4
Installation
,
®
Meters
0.305
0.610
0.914
1.219
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