Install The Vent Restrictor (If Necessary) - Superior Fireplaces DRC3000-B Series Installation And Operation Instruction Manual

Innovative Hearth Products
DRC3000-B Series Direct-Vent Gas Fireplaces

Install the Vent Restrictor (if necessary)

9.
1. Use the vent run descriptions in Figure 12 to determine if a vent restrictor is necessary.
2. If necessary, assemble the vent restrictor and wing as detailed in Figure 13C.
3. If necessary, install the appropriate vent restrictor (Figure 13A or 13B).
NOTE: If installing the vent restrictor in a rear vent application, ensure the factory-installed intake air baffle is in place
(Figure 13B).
NOTE: The vent restrictor is shipped in the firebox.
Figure 12 - 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.
NOTE: When venting Rear Horizontal with slip collar and termination only, install base vent
restrictor with the breakaway portion raised.
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 13A), from inside or outside the unit, in the
inner fireplace collar. The vent restrictor is held in place by friction.
Vent Restrictor with Horizontal Terminations
When horizontally terminating a vent system with a vertical vent run up to 6 ft through an exterior wall, no vent
restrictor is required.
If installing more than 6 ft of vertical venting, install the restrictor (Figure 13B), from inside or outside the unit, in the
inner fireplace collar. The vent restrictor is held in place by friction.
22
3" Base 3" Base + wing
25 ft Maximum
Horizontal Distance (ft)
5 10 15 25
Figure 13A - Vent Restrictor Installation, Top Vent
60 ft Maximum vertical run
*
60
40
Figure 13B - Vent Vestrictor Installation, Rear Vent
10
6
Figure 13C - 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
Vent Outlet
Inner Fireplace Collar Appliance Rear
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
Installation
901191-00C, 07/2023
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-
raised***
Away Raised*** raised***
With break-away
raised***