Installation
900079-02J, 05/2019
Innovative Hearth Products
DRL3000 Linear Direct-Vent Gas Fireplaces
33
Table 23 - Top Vent—Two 90° Elbows
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
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.
V
H
H
1
Horizontal
Termination
Vertical Firestop/
Spacer
u
Horizontal Firestop/
Spacer
u
v
Table 24 - Top Vent—Three 90° Elbows
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
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.
V
H
H 1
V 1
Vertical Firestop/Spacer
u
v
Horizontal
Termination
Horizontal Firestop/
Spacer
u
