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ADJUSTMENT
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#BAY-41-G R.9 Sept 2018
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. Remove refractory (if installed) and log set.
3. Remove (2) screws securing termination access panel, located on
the fireplace baffle.
4. 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.
5. Insert restrictor into the 4 in (102 mm) exhaust pipe with the tabs
pointing towards you.
6. Reinstall termination access panel. Insert the panel tabs into the
slots in the fireplace baffle. Secure with (2) screws previously
removed.
7. Reinstall all components previously removed.
11.2.2.2 Restrictor Modification
1. Remove the safety barrier and glass frame assembly.
2. Remove refractory (if installed) and log set.
3. Remove (2) screws securing termination access panel, located on
the fireplace baffle.
4. Remove the restrictor from the 4 in (102 mm) exhaust pipe by
pulling the restrictor down and out.
5. Make necessary modifications to achieve desired flame
appearance.
6. Insert restrictor into the 4 in (102 mm) exhaust pipe with the tabs
pointing towards you.
7. Reinstall termination access panel. Insert the panel tabs into the
slots in the fireplace baffle. Secure with (2) screws previously
removed.
8. 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