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3.8.2 Top Vented Cavity Framing
NOTE: This vented cavity option allows the use of 19 gauge or less
hardware mesh that is 1/2" x 1/2" to prevent any items from entering
the vented cavity. This hardware mesh is optional and the only
approved item for use within the air discharge opening.
WARNING: Do NOT cover or place any items in the area of the air
discharge opening. Failure to comply with these instructions could
create a fire hazard. Grilles and louvers are not allowed in the discharge
opening.
WARNING: Ensure air flow within the air discharge opening is not
restricted in any way.
WARNING: Enclosure measurements must maintain minimum framing
specs as outlined in Section 3.7.2.4 Rough-in Wall Enclosure on page
23. Minimum dimensions for the air discharge MUST BE maintained
after all finishing materials are installed.
These are minimum dimensions shown for the air discharge
opening, and the opening may be increased, if desired, as long as all
requirements are followed. It is recommended to limit your opening
for aesthetic purposes and to avoid items falling into the enclosure.
•
Figure 3.19 shows the minimum 1-1/2" (38mm) clearance from
Top Vented Cavity Framing
½
1
"
(38mm)
½
1
"
(38mm)
VENTED CAVITY INSTALLATIONS ONLY
Figure 3.19, Top Vented Cavity Installation
28 FRAMING
the fireplace enclosure top to the ceiling on all three sides of the
enclosure.
3.8.2.1 Top Vented Cavity Option
•
Figure 3.20 on the following page shows the installation of
crown molding or similar trim work that goes up to the edge of
the air discharge opening. 12" (305mm) is the maximum length
of the molding or trim projection and you must maintain 1-1/2"
(38mm) clearance for the full length of crown molding/trim
projection. This molding or trim cannot decrease the minimum
opening requirement.
•
Figure 3.21 on the following page shows an alternative
installation for the top vented cavity option with an air discharge
overhang in front of the air discharge opening. This installation
method can provide a means to visually hide the air discharge
opening.
½
1
"
(38mm)
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
Alternative Installations
#CLW-40 R.3 November 2021
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