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26
VENTING
8.0 VENTING
8.1 Approved Vent Systems
Vent Manufacturer
Direct Vent System
Termination
American Metal
Products
Ameri-Vent 5” x 8”
Horizontal & Vertical
BDM
Pro-Form 5” x 8”
Horizontal & Vertical
ICC
EXCELDirect 5” x 8”
Horizontal & Vertical
Kozy Heat
800 Series Flexible
Vent Kit
Horizontal Only
Metal Fab
Direct Vent Chimney
5” x 8”
Horizontal & Vertical
Selkirk
Direct Temp 5” x 8”
Horizontal & Vertical
Simpson
DuraVent
DV-GS 5” x 8”
Horizontal & Vertical
8.2 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 LP gas.
• 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.
8.2.1 Vent Section Clearances
NOTE: Wall thimble products that comply with the required 1
in (25 mm) 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.
Table 8.1, Vertical Pipe Section Clearances
Surface
Sides
All Approved Venting
1 in (25 mm)
Table 8.2, Horizontal Pipe Section Clearances
Surface
Top
Bottom
Sides
All Approved Venting
1 in (25 mm)
1 in (25 mm)
1 in (25 mm)
8.3 Elbows
• MAXIMUM NUMBER OF 90° ELBOWS: 5
• 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.
8.4 Restrictor Plate Assembly
and Installation
A restrictor plate (included in components packet) may be used
to achieve desired flame appearance on any venting installation
with at least 8 ft (2.4 m) of vertical pipe or more. Section
12.2.2 Vent Restriction on page 44 outlines restrictor plate
recommendations depending on burner flame appearance, and
instructions on installation after venting is completed.
RESTRICTOR PLATE
BEND TABS TO APPROX. 80° ANGLES TO CREATE
TENSION TO HOLD ITSELF IN PLACE WHEN INSTALLED
REMOVE CIRCLE TO
CREATE LESS RESTRICTON
SLIDE RESTRICTOR INTO EXHAUST PIPE ON TOP OF FIREPLACE
WITH TABS FACING TOWARDS YOU PRIOR TO ATTACHING VENTING
Figure 8.1, Restrictor Assembly and Installation