Install The Vent Restrictor (If Necessary) - Superior Fireplaces DRT3545DEN-C Installation And Operation Instruction Manual

Innovative Hearth Products
DRT3500-C Series Direct-Vent Gas Fireplaces

Install the Vent Restrictor (if necessary)

9.
1. Use the vent run descriptions in Figure 11 to determine if a vent restrictor is necessary.
2. If necessary, assemble the vent restrictor and wing as detailed in Figures 11 and 14.
3. If necessary, install the appropriate vent restrictor (Figure 12 or 13).
NOTE: If installing the vent restrictor in a rear vent application, ensure the factory-installed intake air baffle is in place (Figure 13).
NOTE: The vent restrictor is shipped in the firebox.
Figure 11 - When to use a vent restrictor
2 1/2"
None Break-Away
horizontal run (flat to near level)
40
20
5
3
2
1
Elbow**
1.9
* For straight runs or runs with elbows as illustrated in Vertical Vent Figures/Tables starting on
Page 29
** No rise required.
22
3" Base 3" Base + wing
25 ft Maximum
Horizontal Distance (ft)
5 10 15 25
Figure 12 - Vent restrictor installation, Top vent
60 ft Maximum vertical run
*
60
40
Figure 13 - Vent restrictor installation, Rear vent
10
6
Figure 14 - Vent restrictor assembly
6 ft Minimum
vertical run *
U-Shaped Vent
Restrictor
U-Shaped Vent
Restrictor
Inner
Fireplace
Inner
Collar
Fireplace
Appliance Top Vent Outlet
U-Shaped Vent Collar
Restrictor
Appliance Top Vent Outlet
Inner
Fireplace
Collar
Appliance Top Vent Outlet
Inner Fireplace Collar Appliance Rear
INNER FIREPLACE
Inner Fireplace Collar Appliance Rear Vent Outlet
COLLAR
INNER FIREPLACE
APPLIANCE REAR
Vent Outlet
COLLAR
U-Shaped Vent
U-Shaped Vent
Restrictor
Restrictor
Inner Fireplace Collar
Inner Fireplace Collar Appliance Rear
INNER FIREPLACE
APPLIANCE REAR
Vent Outlet
COLLAR
Intake Air Baffle
Intake Air Baffle
U-Shaped Vent
Restrictor
Intake Air Baffle
Intake Air Baffle
Base Vent Restrictor
Base Vent Restrictor
Base Vent Restrictor
Base Vent Restrictor
Base Vent Restrictor + Wing
Base Vent Restrictor + Wing
Base Vent Restrictor + Wing
Base Vent Restrictor + Wing
Minimal Restrictor
Installation
900960-00D, 04/2020
APPLIANCE REAR
VENT OUTLET
VENT OUTLET
U-SHAPED VENT
Appliance Rear
U-SHAPED VENT
RESTRICTOR
RESTRICTOR Vent Outlet
U-Shaped Vent
Restrictor
VENT OUTLET
U-SHAPED VENT
RESTRICTOR
With break-away
With break-away With break-away
raised***
raised***
raised***
With break-away
raised***