24 VENTING
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#SP-34 LE & MV R.5 January 2020
7.0 VENTING
7.1 Approved Vent Systems
This appliance is equipped for use with a 4” exhaust by 6-5/8” air
intake co-axial vent pipe system.
This appliance is approved for use with Kozy Heat 4” x 7” #700 Series
Flexible Direct Vent system (horizontal terminations only). Refer to
Section 7.8 #700-2 Series Direct Vent Termination Kit(s) on page 30
for venting components and installation instructions.
This appliance is approved for use with manufacturers (horizontal and
vertical terminations): American Metal Products (Ameri-Vent), BDM,
ICC, Metal Fab*, Olympia Chimney Supply, Inc., Selkirk, and Simpson
DuraVent.
*WHEN INSTALLING METAL FAB VENT SYSTEM with this appliance
an adapter must be used. Use adapter part number 4DDA.
The following termination caps are not allowed: Metal Fab 4DHTE;
Olympia VDV-HSC04; Simpson Duravent 46DVA-HRCS, 46DVA-HSC,
46DVA-SNK14, 46DVA-SNK36, 46DVA-H2, 46DVA-H2-SNK14, 46DVA-
H2-SNK36.
This appliance can be adapted to use 4” diameter aluminum flexible
pipe when used in combination with an existing minimum 7” ID Class
A metal chimney. See Section 7.6 Class A Chimney/Masonry Chimney
Conversion on page 28.
This appliance can be adapter to use 3” x 3” flexible co-linear vent
pipes when used in combination with an existing minimum 6” x 8” ID
masonry or 7” ID Class A metal chimney. See Section 7.7 Coaxial to Co-
Linear Chimney Conversion on page 29.
Refer to the vent manufacturer’s installation manual for complete
installation instructions. Vent installation must conform with venting
requirements and restrictions as outlined in this manual.
7.2 Venting Requirements
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.
NOTE: Wall thimble products that comply with the required clearance
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.
NOTE: Attic insulation shields may be insulated using unfaced
insulation products listed as noncombustible per ASTM E 136.
•
Flame height and appearance will vary depending upon venting
configuration and the type of fuel used.
•
Refer to the vent manufacturer’s installation manual for
complete installation instructions. Vent installation must
conform with venting requirements and restrictions as outlined
in this manual.
•
The vertical vent heat shield is required for all vent installations.
The horizontal vent heat shield must be installed when
incorporating minimum horizontal venting. See Section 7.10
Vent Heat Shield Assembly Installation on page 28.
•
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
pipe must be maintained.
•
A minimum of 1” (25mm) clearance on the top, sides, and bottom
of the horizontal vent pipes must be maintained.
7.3 Use of Elbows
•
MAXIMUM NUMBER OF 90° ELBOWS: 5
•
For each additional 90° elbow used after the first elbow, 3’ (91.4
cm) must be subtracted from maximum venting allowed.
•
For each 45° elbow used, 1½’ (457mm) must be subtracted from
maximum venting allowed.
•
(2) 45° degree elbows may be used in place of (1) 90° elbow.
7.4 Restrictor Plate Assembly
and Installation
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.
Section 11.2.2 Vent restriction (after installation) on page 47
outlines restriction recommendations depending on burner
flame appearance, and instructions on installation after venting is
completed.
RESTRICTOR PLATE
REMOVE INNER MOST CIRCLE
TO CREATE LESS RESTRICTION
REMOVE ALL INNER RINGS FOR
THE LEAST RESTRICTION
BEND TABS TO APPROX. 80˚ ANGLES TO CREATE
TENSION TO HOLD ITSELF IN PLACE WHEN INSTALLED
Figure 7.1, Restrictor Assembly and Installation
SLIDE RESTRICTOR INTO EXHAUST PIPE ON TOP OF FIREPLACE
WITH THE TABS POINTING TOWARDS YOU PRIOR TO ATTACHING VENTING
