Superior DRT3033 Installation And Operation Instructions Manual page 21

Innovative Hearth Products
Superior DRT3000 Series Direct-Vent Gas Fireplaces
TM
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 12 and Figure 15.
3. If necessary, install the appropriate vent restrictor (Figure 13 and Figure 14).
NOTE: If installing the vent restrictor in a rear vent application, ensure the factory-installed intake air baffle is in place (Figure 14).
NOTE: The vent restrictor is shipped in the firebox.
Figure 12: When to use a vent restrictor
2 1/2"
None Break-Away 3" Base
25 ft Maximum
horizontal run (flat to near level)
40
20
5
3
2
1
Elbow**
Horizontal Distance (ft)
1.9 5
* For straight runs or runs with elbows as illustrated in Vertical Vent Figures/Tables starting on
Page 27
** No rise required.
*** Note: When venting Rear Horizontal with slip collar and termination only, install base vent
restrictor with the breakwway portion raised. On 33" Models, use the 3" base at 6' instead of the
2 1/2" breakaway.
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.
3" Base + wing
60 ft Maximum vertical run
10 15 25
U-Shaped Vent
U-Shaped Vent
Fireplace
U-Shaped Vent
Figure 13: Vent restrictor installation, Top vent
Fireplace
U-Shaped Vent
Restrictor
*
60
Fireplace
40
Fireplace
Inner Fireplace Collar
INNER FIREPLACE
Inner Fireplace Collar
INNER FIREPLACE
Figure 14: Vent restrictor installation, Rear vent
10
Inner Fireplace Collar
Inner Fireplace Collar
INNER FIREPLACE
Inner Fireplace Collar
INNER FIREPLACE
Intake Air Baffle
Intake Air Baffle
6 ***
Intake Air Baffle
Intake Air Baffle
Figure 15: Vent restrictor assembly Intake Air Baffle
6 ft Minimum
vertical run
*
900285-00 11/2014
Restrictor
Restrictor
Inner
Inner
Collar
Restrictor
Appliance Top Vent Outlet
Collar
Appliance Top Vent Outlet
Inner
Collar
Appliance Top Vent Outlet
Inner
Collar
Appliance Rear
Appliance Top Vent Outlet
APPLIANCE REAR
Appliance Rear Vent Outlet
COLLAR
VENT OUTLET
APPLIANCE REAR
Vent Outlet
COLLAR
VENT OUTLET
U-Shaped Vent
U-SHAPED VENT
U-Shaped Vent
Restrictor
U-SHAPED VENT
RESTRICTOR
Restrictor
RESTRICTOR
Appliance Rear
Appliance Rear
APPLIANCE REAR
Vent Outlet
Vent Outlet
COLLAR
VENT OUTLET
Appliance Rear
U-Shaped Vent U-Shaped Vent
APPLIANCE REAR
U-SHAPED VENT
Vent Outlet
Restrictor Restrictor
COLLAR
VENT OUTLET
RESTRICTOR
U-Shaped Vent
U-SHAPED VENT
Restrictor
RESTRICTOR
With
With break-away
break-away
With break-away
raised***
raised***
raised***
With break-away
raised***
Base Vent Restrictor With break-away
Base Vent Restrictor
Base Vent Restrictor
raised***
Base Vent Restrictor
Base Vent Restrictor
Base Vent Restrictor + Wing
Base Vent Restrictor + Wing
Base Vent Restrictor + Wing
Base Vent Restrictor + Wing
Base Vent Restrictor + Wing
Installation
21