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11.2.2 Vent Restriction
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. To
achieve desirable flame appearance, the vent exhaust may be
restricted by the restrictor plate (included in components packet).
Follow the table below to adjust vent restriction to the desired
flame appearance. Allow the fireplace to burn for 15 minutes
before making any adjustments to these settings.
Table 11.5, Restrictor Adjustment for Flame Appearance
Flame
Draft Problem
Appearance
Short, flickering
Excessive draft
Not enough
restriction
Lifting or ghosting*
Insufficient draft
Too much
restriction
*If flames continue to lift or ghost after restrictor installation, or after
installing and verifying correct vent installation, shut off the gas supply
and call a qualified service technician.
11.2.2.1 Restrictor Plate Installation
1.
Remove the safety barrier and the glass frame assembly.
2.
Remove (3) screws at the firebox ceiling securing the baffle.
Lift the baffle out of slots on the firebox back wall.
3.
Bend the tabs on the restrictor plate (included in components
packet) to approximately 80° angles. This will create tension
when the restrictor is inserted into the exhaust pipe.
4.
Insert restrictor into the 4 in (102 mm) exhaust pipe with the
tabs pointing towards you.
5.
Reinstall baffle by inserting the tabs on the baffle into the
slots on the firebox back wall. Secure the baffle to the firebox
ceiling with (3) screws.
6.
Reinstall all components previously removed.
11.2.2.2 Restrictor Plate Modification
1.
Remove the safety barrier and the glass frame assembly.
2.
Remove (3) screws at the firebox ceiling securing the baffle.
Lift the baffle out of slots on the firebox back wall.
3.
Remove the restrictor by pulling it down and out of the 4 in
(102 mm) exhaust pipe. Make necessary modifications to
achieve desired flame appearance.
4.
Insert restrictor into the 4 in (102 mm) exhaust pipe with the
tabs pointing towards you.
5.
Reinstall baffle by inserting the tabs on the baffle into the
slots on the firebox back wall. Secure the baffle to the firebox
ceiling with (3) screws.
6.
Reinstall all components previously removed.
40 ADJUSTMENT
Vent Restriction
Install restrictor plate
Remove inner ring(s) on
restrictor plate, or remove
restrictor plate
RESTRICTOR PLATE
BEND TABS TO APPROX. 80° ANGLES TO CREATE
TENSION TO HOLD ITSELF IN PLACE WHEN INSTALLED
(3) SCREWS SECURING BAFFLE
Figure 11.5, Vent Access and Restrictor Plate
REMOVE CIRCLE TO
CREATE LESS RESTRICTION
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