Venting Requirements - kozy heat CALLAWAY 50 MV Installation And Operation Manual

7.2 Venting Requirements

NOTE: Consult the local and national installation codes to assure
adequate combustion and ventilation air is available. Venting
requirements apply to both natural gas and propane.
• Flame height and appearance will vary depending upon venting
configuration and the type of fuel used.
• Provide a means for visually checking the vent connection to the
appliance after the fireplace is installed.
• A minimum of 1" (25mm) clearance on all sides of the vertical
vent pipe must be maintained. Attic insulation shields may
be insulated using unfaced insulation products listed as
noncombustible per ASTM E 136.
• Kozy Heat's #800-WPT series, or wall thimble products that
comply with a minimum of 3" (76mm) clearance on the top side
and a minimum of 1" (25mm) clearance on the bottom, left, and
right sides of the horizontal vent pipe at the wall pass-through
must be maintained. Wall thimble products that comply with
the required clearances to combustibles must be installed for all
horizontal vent runs that pass through interior or exterior walls.
These wall thimble products may be insulated using unfaced
insulation products listed as noncombustible per ASTM E 136.
7.3 Natural Draft Vent Restriction
Burner flame appearance and characteristics are affected by altitude,
fuel quality, venting configuration, and other factors. To achieve
desirable flame appearance, the vent exhaust may be restricted by
the restrictor plate (included in components packet).
The restrictor plate is shipped with all inner rings intact, and when
installed, provides the most vent restriction. There are (2) inner rings
that can be knocked out. The innermost ring knocked out will create
less restriction, and the outer most ring knocked out will create the
least amount of restriction.
Follow FIGURE 7.1 for restrictor plate installation before attaching
venting, or through the baffle if venting is already attached.
restriction plate recommendations and adjustments, see
11.2.2, VENT RESTRICTION (AFTER INSTALLATION) on page 62.
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
Restrictor Plate
For vent
section
Insert restrictor plate into 5" (127mm) exhaust pipe in rebox
ceiling with tabs facing towards you after vent installation
FIGURE 7.1 Restrictor Plate Installation
Venting Requirements–Natural Draft Vent Restriction
Slide restrictor into exhaust pipe on
top of replace with the tabs facing
towards you prior to attaching venting
Bend tabs to approx. 80° angles to create
tension to hold itself in place when installed
Remove innermost circle
to create less restriction
Remove all inner rings for
the least restriction
R.1 October 2021
SECTION 7 VENTING
45
#CLW-50-MV