#BAY-41-G R.9 Sept 2018
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
VENTING
27
7.2 Approved 4” x 6-5/8” Vent Systems
Vent Manufacturer Direct Vent System
Termination
American Metal
Products
Ameri-Vent
Horizontal & Vertical
BDM
Pro-Form
Horizontal & Vertical
ICC
EXCELDirect
Horizontal & Vertical
Kozy Heat
700 Series Flexible Vent System Horizontal Only
Metal Fab
Direct Vent Chimney
EXCEPT
4DH7 cap
Horizontal & Vertical
Olympia Venting
Supply, Inc.
Ventis Direct Vent
Horizontal & Vertical
Security
Direct Vent Chimney
Horizontal & Vertical
Selkirk
Direct Temp
Horizontal & Vertical
Simpson DuraVent
DirectVent Pro
EXCEPT
Snorkel 46DVASNK14
Horizontal & Vertical
7.3 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.
•
Provide a means for visually checking the vent connection to the
appliance after the fireplace is installed.
•
A minimum of 1 in (25 mm) clearance on all side of the vertical
pipe must be maintained.
•
A minimum of 1 in (25 mm) clearance on all side of the horizontal
vent flex pipe must be maintained.
•
A minimum of 1-1/2 in (38 mm) top clearance and a minimum of
1 in (25 mm) bottom and side clearances for the horizontal rigid
pipe must be maintained.
7.4 Use of Elbows
•
MAXIMUM NUMBER OF 90° ELBOWS: 4
•
For each additional 90° elbow used after the first elbow, 3 ft (91.4
cm) must be subtracted from maximum venting allowed.
•
For each 45° elbow used, 1½ ft (457 mm) must be subtracted
from maximum venting allowed.
•
(2) 45° degree elbows may be used in place of (1) 90° elbow.
7.5 Restrictor 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 inner most 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
ventingSection 11.2.2 Restrictor on page 46 outlines restrictor
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
SLIDE RESTRICTOR INTO EXHAUST PIPE ON TOP OF FIREPLACE
WITH TABS POINTING TOWARDS YOU PRIOR TO ATTACHING VENTING
Figure 7.1, Restrictor Assembly and Installation
