36
ADJUSTMENT
11.2.2 Restrictor
WARNING: To avoid property damage or personal injury, allow
the fireplace ample time to cool before making any adjustments.
WARNING: Improper vent installation may cause the burner
flames to lift or “ghost.” Perform a visual check on flame
appearance after restrictor adjustment to ensure proper
performance.
Vertical terminations may display an active, compact flame. If this
appearance is not desirable, a restrictor may need to be installed
or modified after vent termination installation. Access to the vent
exit for restriction can be reached through the fireplace baffle.
Allow the fireplace to burn for 15 minutes before making any
adjustments.
Table 11.5, Restrictor Adjustment Guidelines
Flame Appearance
Draft Problem
Solution
Short, flickering
Excessive draft
Not enough restriction
Add restrictor
Lifting or ghosting*
Insufficient draft
Remove inner ring(s)
on restrictor, or
Remove restrictor
*If flames continue to lift or ghost after opening the restrictor and
verifying correct vent installation, shut off the gas supply and call a
qualified service technician.
11.2.2.1 Restrictor Installation
1. Remove the safety barrier and glass frame assembly.
2. Open the exhaust damper by loosening the wing nuts to
access the vent exit.
3. Bend the tabs on the restrictor (included in fireplace
components packet) to approximately 80° angles. This will
create tension when the restrictor is inserted into the exhaust
pipe.
4. Insert restrictor into the 5 in (127 mm) exhaust pipe with the
tabs pointing towards you.
5. Readjust the exhaust damper to the desired position. Tighten
wing nuts.
6. Reinstall all components previously removed.
11.2.2.2 Restrictor Modification
1. Remove the safety barrier and glass frame assembly.
2. Open the exhaust damper by loosening the wing nuts to
access the vent exit.
3. Remove the restrictor from the 5 in (127 mm) exhaust pipe by
pulling the restrictor down and out.
4. Make necessary modifications to achieve desired flame
appearance.
5. Insert restrictor into the 5 in (127 mm) exhaust pipe with the
tabs pointing towards you.
6. Readjust the exhaust damper to the desired position. Tighten
wing nuts.
7. Reinstall all components previously removed.
Figure 11.4, Restrictor Installation and Modification
RESTRICTOR PLATE
BEND TABS TO APPROXIMATELY 80° ANGLES TO CREATE TENSION
TO HOLD ITSELF IN PLACE WHEN INSTALLED
REMOVE CIRCLE TO
CREATE LESS RESTRICTON
WING NUTS
VENT EXHAUST
