ADJUSTMENT
39
SP-41-L MANUAL REV#2 OCT 2017
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
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. 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 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.
Figure 11.4, Vent Access and Restrictor Plate
RESTRICTOR PLATE
REMOVE CIRCLE TO
CREATE LESS RESTRICTION
BEND TABS TO APPROX. 80° ANGLES TO CREATE
TENSION TO HOLD ITSELF IN PLACE WHEN INSTALLED
(3) SCREWS SECURING BAFFLE
INSERT RESTRICTOR PLATE INTO EXHAUST PIPE
