72
ADJUSTMENT
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#CLW-ST R.1 February 2021
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 plate may need to be
installed 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.
The restrictor plate is shipped with all inner rings intact. There are
(2) inner rings that must be knocked out. Do not install the restrictor
plate with the (2) inner rings in place.
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 restrictor
plate
*If flames continue to lift or ghost after removing the restrictor plate
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, access cover, and the front glass frame
assembly.
2. Locate the vent cover plate. Remove cover plate (4) screws.
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. Remove all inner rings in restrictor plate.
5. Insert restrictor plate into the 5” (127mm) exhaust pipe with the
tabs pointing down.
6. Reinstall front glass frame assembly, access cover, and safety
barrier.
Figure 11.4, Vent Cover Plate and Restrictor Plate
Remove exhaust cover plate (4) screws
Insert restrictor plate with ALL inner rings removed
into 5” (127mm) exhaust
Restrictor Plate
Remove ALL inner rings
Bend tabs to approx. 80˚ angles to create
tension to hold itself in place when installed
