Install The Vent Restrictor (If Necessary) - Superior Fireplaces DRC3500 Installation And Operation Instructions Manual

Innovative Hearth Products
DRC3500 Contemporary 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: The vent restrictor is shipped in the firebox.
Figure 11 - 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 28
** No rise required.
SEE PAGE 23 FOR VENT RESTRICTOR ASSEMBLY INSTRUCTIONS
22
Base
Base restrictor
Restrictor
+ wing
25 ft Maximum
Horizontal Distance (ft)
5 10 15 25
Figure 12 - 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 13 - Vent restrictor installation, Rear vent
Installation in rear vent. Install so flap (and wing if installed)
will stay closed
*
Exhaust
From
Inside
Fireplace
900905-00, 07/2018
To Termination
Flap Must Move
Up Freely
Exhaust From Inside Fireplace
Flap Must
Move Up
Freely
To Termination
Installation