#SP-34 LE & MV R.5 January 2020
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
ADJUSTMENT 47
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
restrictor plate adjustment to ensure proper performance.
Vertical terminations may display an active, compact flame. If this
appearance is not desirable, a restrictor plate 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 Plate Adjustment Guidelines
Flame Appearance
Draft Problem
Solution
Short, flickering
Excessive draft
Not enough restriction
Add restrictor plate
Lifting or ghosting*
Insufficient draft
Remove inner ring(s)
on restrictor plate, or
Remove restrictor
plate
*If flames continue to lift or ghost after opening the restrictor plate
and verifying correct vent installation, shut off the gas supply and call a
qualified service technician.
11.2.2.1 Restrictor Installation
1. Open the control compartment access panel
2. Remove the safety barrier and glass frame assembly.
3. Remove (3) screws at the firebox ceiling securing the baffle. Lift
the baffle out of slots on the firebox back wall.
4. Bend the tabs on the restrictor plate (included in fireplace
components packet) to approximately 80° angles. This will create
tension when the restrictor plate is inserted into the exhaust
pipe.
5. Insert restrictor plate into the 4” (102mm) exhaust pipe with the
tabs pointing towards you.
6. 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.
7. Reinstall all other components previously removed.
8. Set control compartment back into position.
11.2.2.2 Restrictor Modification
1. Open the control compartment access panel.
2. Remove the safety barrier and glass frame assembly.
3. Remove (3) screws at the firebox ceiling securing the baffle. Lift
the baffle out of slots on the firebox back wall
4. Remove the restrictor plate from the 4” (102mm) exhaust pipe by
pulling the restrictor plate down and out.
5. Make necessary modifications to achieve desired flame
appearance.
6. Insert restrictor plate into the 4” (102mm) exhaust pipe with the
tabs pointing towards you.
7. 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.
8. Reinstall all other components previously removed.
9. Set control compartment back into position.
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 11.5, Restrictor Installation and Modification
(3) SCREWS SECURING BAFFLE
