#BAY-41-LE R.5 July 2019
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
ADJUSTMENT
49
11.2.2 Vent Restriction (after installation)
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
restriction 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 11.4, Restrictor Adjustment for Flame Appearance
Flame Appearance
Draft Problem
Vent Restriction
Short, flickering
Excessive draft
Not enough
restriction
Install restrictor plate
Lifting or ghosting*
Insufficient draft
Too much
restriction
Remove inner ring(s) on
restrictor plate, or remove
restrictor plate
*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 plate is inserted into the exhaust pipe.
4. Insert restrictor plate 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 plate 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 plate 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.
RESTRICTOR PLATE
REMOVE INNER MOST CIRCLE
TO CREATE LESS RESTRICTION
REMOVE ALL INNER RINGS FOR
THE LEAST RESTRICTION
BEND TABS TO APPROX. 80˚ ANGLES TO CREATE
TENSION TO HOLD ITSELF IN PLACE WHEN INSTALLED
Figure 11.4, Restrictor Installation and Modification
REMOVE (2) SCREWS SECURING TERMINATION ACCESS PANEL
