Install Vent Restrictor - Superior Fireplaces DRT4000-C Series Installation And Operation Instructions Manual

Innovative Hearth Products
DRT4000-C & DRT4200-C Series Direct-Vent Gas Fireplaces
Install the Vent Restrictor (if necessary)
9.
1. Use the vent run descriptions in Figure 14A to determine if a vent restrictor is necessary.
2. If necessary, assemble the vent restrictor and wing as detailed in Figures 14A and 14D
3. If necessary, install the appropriate vent restrictor (Figure 14B or 14C).
NOTE: The vent restrictor is shipped in the firebox.
Figure 14A - When to use a vent restrictor
None
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 30.
** No rise required.
SEE PAGE 23 FOR VENT RESTRICTOR ASSEMBLY INSTRUCTIONS
Base
Base restrictor
Restrictor
+ wing
25 ft Maximum
Horizontal Distance (ft)
5 10 15 25
Figure 14B - Vent restrictor installation, Top vent
Installation in top vent. Put flap (and wing if installed)
directed toward the rear of unit.
60 ft Maximum
vertical run *
60
40
20
6
Figure 14C - Vent restrictor installation, Rear vent
Installation in rear vent. Install so flap (and wing if installed)
will stay closed
*
Exhaust
From
Inside
Fireplace
901032-00B, 07/2020
To Termination
Flap Must Move
Up Freely
Exhaust From Inside Fireplace
Flap Must
Move Up
Freely
To Termination
Installation
23