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4.5 Vented Cavity and KZK Facing
and Finishing Requirements
WARNING: Maintain all minimum clearances to combustibles from the
appliance and vent system.
WARNING! RISK OF FIRE : The following facing and finishing options are
for use ONLY when using an optional vented cavity or Komfort Zone Kit
with the convection baffle and cover plates removed. DO NOT follow
these options unless you are using the vented cavity option.
NOTE: All vented cavity options and Komfort Zone Kit(s) allow the
sidewall to be flush with the fireplace finishing edge (safety screen
only), or flush with an optional surround installed.
4.5.1 Mantel and Hearth Requirements
WARNING: All minimum clearances to combustible material MUST be
maintained.
IMPORTANT: If you plan to install a hearth and an optional
surround, reference Section 4.3 Finishing Guidelines for
Optional Surrounds on page 36 for allowable space
for finishing materials to ensure a proper fitting of the
surround. Use measurement in 'B'
36 for the required space necessary from the bottom of
the fireplace finishing edge to the start of the hearth or the
mantel.
•
Combustible Hearth and Mantel Projections - See Section 4.3
Finishing Guidelines for Optional Surrounds on page 36 if
installing an optional surround. See Figure 4.13 if installing with
no surround.
4.5.2 Adjacent Sidewall Requirements
•
The adjacent sidewall minimum clearance is 0" (0mm)
finishing edge of the fireplace if installing without a surround.
If installing an optional surround,
Section 4.3 Finishing Guidelines for Optional Surrounds on page
36, for the space required from the optional surround sides to
finishing material.
4.5.3 Facing Requirements
•
Non-combustible material is required at the top and sides of
the fireplace. This fireplace is designed to accommodate non-
combustible facing material up to 3/4" (19mm) thick. See Figures
4.14 and 4.15 on page 36.
•
Install facing material up to the finishing edge that surrounds
the glass frame assembly. Do not apply any material beyond this
point. The glass frame assembly must be removable. If installing
an optional surround, refer to the measurements in Section 4.3
on page 36 as you may need to leave space from the finishing
edge for proper fitting of the surround.
•
Material may be attached to the bottom front cover panel using
a silicone sealant that has a 300°F (149°C) continuous exposure
rating.
38 FACING AND FINISHING
on page
FIGURE 4.10
from the
refer to Measurement 'A' , in
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
•
It is acceptable to pre-drill holes and to use self-tapping screws
prior to attach the non-combustible material to the top and sides
of the fireplace face, screws can only penetrate the fireplace
outer shell up to 1/2" (13mm) in the allowed areas. See Figure
4.14 on page 34.
4.5.4 Finishing Recommendations
NOTE: The surface area above the appliance may be affected by high
temperatures emitted from this appliance. To help avoid or reduce the
possibility of the sheetrock to crack, Hussong Mfg. Co., Inc. recommends
the following methods:
•
Ensure the non-combustible material and sheetrock is dry and
dust free.
•
For taping and mudding seams, we recommend heat resilient
tape, mesh and joint compounds, such as Durabond. Mud must
be cured as per manufacturer's recommendations.
•
For a painted surface, use a high quality acrylic latex primer
and finish coat. Avoid flat or light-colored paints to prevent
discoloring.
4.5.4.1 Combustible Wall Finish
•
FIGURE 4.16 on page 41 shows installation of combustible
wall finish up to 1" (25mm) thick for Komfort Zone Kit(s)
and Vented Cavity installations. For KZK-158A and KZK-044
installations, reference the manuals included with the kit.
•
Finishing materials cannot block the required vented cavity
discharge opening requirements.
•
This combustible material goes on any required non-
combustible materials as shown in Figure 4.14 and Figure 4.15
on page 36.
•
This 1" (25mm) combustible material is able to go down to the
fireplace finishing edge and up to the air discharge opening.
#CLW-40 R.3 November 2021
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