Installation
900994-00K, 07/2021
Innovative Hearth Products
DRL2000 & DRL3500 Series Direct-Vent Gas Fireplaces
24
Figure 12 - When to use a vent restrictor
2 1/2”
Break-Away
1
3
20
40
6
10
40
25 ft Maximum
horizontal run (flat to near level)
60 ft Maximum vertical run
60
1.9
25
Horizontal Distance (ft)
Vertical Height (ft) from top of unit
Vertical Height (ft)
2
5
Elbow**
5
10
15
3” Base + wing
3” Base
6 ft Minimum
vertical run
6 ft Minimum vertical ru
n
None
*
*
* For straight runs or runs with elbows as illustrated in Vertical Vent Figures/Tables starting on
Page 30
** No rise required.
Figure 13 - Vent restrictor installation, Top vent
U-Shaped Vent
Restrictor
Inner
Fireplace
Collar
Appliance Top Vent Outlet
U-SHAPED VENT
RESTRICTOR
APPLIANCE REAR
VENT OUTLET
INNER FIREPLACE
COLLAR
Inner Fireplace Collar
Appliance Rear
Vent Outlet
U-Shaped Vent
Restrictor
Intake Air Baffle
Base Vent Restrictor
Base Vent Rest Wing
With break-away
raised***
Figure 14 - Vent restrictor assembly
With brea
raised***
Base Vent Restrictor
Base Vent Rest Wing
With break-away
raised***
Minimal Restrictor
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 13
),
from inside or outside the unit, in the
inner fireplace collar. The vent restrictor is held in place by friction.
NOTE
: When the minimal vent run is installed please follow guidance on
Table 13
.
Minimal vent run installation parts
The following models will get the following combination
of parts when installed on the minimal vent run.
Table 13 - Minimal Vent Run - Parts Combination
Combination of Parts on a Minimal Vent Run
Combination of Parts
Parts
Assembly
Model
Natural Gas
Propane Gas
Part “A”
Part “B”
Part “A”
Part “B”
DRL2035
Will use parts A & B
Will use parts A & B
DRL2045
Will use parts A & B
Will use parts A & B
DRL3535
Will use parts A & B
Will use parts A & B
DRL3545
Will use part B
Will use part B
DRL2055
Will use parts A & B
Will use parts A & B
DRL3555
Will use part B
Will use part B
f i r e - p a r t s . c o m
