Installation
900079-02J, 05/2019
Innovative Hearth Products
DRL3000 Linear Direct-Vent Gas Fireplaces
21
Figure 11 - When to use a vent restrictor
Figure 12 - Vent restrictor installation, Top vent
Base
3
5
10
45
6
40
15 ft Maximum
horizontal run
60 ft Maximum vertical run
60
2
15
Horizontal Distance (ft)
Vertical Height (ft)
Vertical Height (ft)
4
6
1
4.5
6
7.5
Position 2
Position 1
6 ft Minimum
vertical run
6 ft Minimum
10
9
*
*
U-Shaped
Vent
Restrictor
Inner
Fireplace
Collar
Appliance Top Vent Outlet
Vent
Collar
Vent
Restrictor
(held in
place by
friction)
Base Vent Restrictor
Vent Restrictor Position 1
Vent Restrictor Position 2
Figure 13 - Vent restrictor assembly
* For straight runs or runs with elbows as illustrated in Vertical Vent Figures/Tables starting on
Page 27
.
Vent Restrictor with Vertical Terminations
When vertically terminating the vent system through the roof and using the vent restrictor, install the vent restrictor
in the top vent of the fireplace outlet.
If installing more than 6 ft of vertical venting, install the restrictor
(
Figure 12
)
, from inside or outside the unit, in the
inner fireplace collar. The vent restrictor is held in place by friction.
Vent Restrictor with Horizontal Terminations
When horizontally terminating a vent system with a vertical vent run up to 4 ft through an exterior wall, no vent
restrictor is required.
If installing more than 4 ft of vertical venting, install the restrictor
(
Figure 12
)
, from inside or outside the unit, in the
inner fireplace collar. The vent restrictor is held in place by friction.
Connecting the vent pipe
Secure Vent
®
SV4.5 direct-vent system components are unitized concentric pipe components featuring positive twist
lock connections
(
Figures 14
and
15
)
. All of the fireplaces covered in this document are fitted with collars having
locking inclined channels. The dimpled end of the vent components fit over the fireplace/vent collar to create the
positive twist lock connection.
