20 FRAMING
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#CLW-72 R.1 April 2019
3.11.3 Front Vented Cavity Option
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: Minimum dimensions for the air discharge MUST BE
maintained after all finishing materials are installed.
•
Figure 3.14 shows the minimum required dimensions for
the vent cavity air discharge opening. This single 2” x 70” air
discharge opening can be in either the front of the fireplace
chamber, so hot air exits into the room the fireplace is installed,
or the discharge opening can be in an adjacent room where the
discharge opening would be located on the rear of the fireplace
chamber. See Figure 3.15.
•
Figure 3.16 shows an alternative installation method where you
cap off the fireplace cavity so the air discharge opening can
be located further down the fireplace chamber. If you cap the
fireplace cavity off, it cannot have any vent pipe running through
the top with a ceiling firestop. This installation method can
elevate any possible concerns with paint discoloration from heat
or dust.
•
Figure 3.17 shows the installation of crown molding or similar
trim work that goes up to the edge of the air discharge opening.
This molding or trim cannot decrease the minimum opening
requirement.
•
Figure 3.18 on the following page shows an alternative
installation for the front 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.
Figure 3.15, Vented Cavity Rear to Adjacent Room Standard Installation
Figure 3.16, Front Vented Cavity Alternative Installation
Figure 3.14, Front Vented Cavity Standard Installation
2”
(51mm)
70”
(1778mm)
FRONT VENTED CAVITY OPTION WITH AIR DISCHARGE IN FRONT
NOTE: ALL FRAMING REQUIREMENTS OUTLINED IN SECTION 3.5, 3.6, & 3.7 APPLY TO THIS INSTALLATION
2” (50mm)
6”
(152mm)
2
½
”
(63mm)
1
½
”
(38mm)
MIN
CEILING
MAX
MIN
ENCLOSURE TOP
MUST BE INSTALLED
12”
(305mm)
12” (305mm)
2”
(50mm)
*MUST MAINTAIN 2” (50mm) CLEARANCE FOR FULL
LENGTH OF CROWN MOLDING / TRIM PROJECTION
CEILING
ENCLOSURE
WHEN INSTALLATING CROWN MODLING, YOU CAN
HAVE A MAXIMUM OF 12” OF TRIM
Figure 3.17, Front Vented Cavity Crown Molding Installation
2”
(51mm)
70”
(1778mm)
VENTED CAVITY OPTION WITH AIR DISCHARGE LOCATED IN THE REAR TO ADJACENT ROOM
NOTE: ALL FRAMING REQUIREMENTS OUTLINED IN SECTION 3.5, 3.6, & 3.7 APPLY TO THIS INSTALLATION
