26
VENTING
8.2 Approved 4” x 65/8” 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
#923-F adapter required
Horizontal Only
Metal Fab
Direct Vent Chimney
EXCEPT 4DH7 cap
Horizontal & Vertical
RLH Industries
Vent Cap HS-DV4658
(Terracotta)
Vertical Only
Security
Direct Vent Chimney
Horizontal & Vertical
Selkirk
Direct Temp
Horizontal & Vertical
Simpson DuraVent DirectVent Pro
EXCEPT
Snorkel 46DVASNK14
Horizontal & Vertical
8.3 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 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.
8.3.1 Vent Section Clearances
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
Flex Pipe
1 in (25 mm)
1 in (25 mm)
1 in (25 mm)
Rigid Pipe
1-1/2 in (38 mm
1 in (25 mm
1 in (25 mm
8.4 Use of Elbows
• MAXIMUM NUMBER OF 90° ELBOWS: 4
• For each 90° elbow used, 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.
8.5 Restrictor Assembly and Installation
A restrictor (included in components packet) may be used to
achieve desired flame appearance on any top venting configuration
with 6 ft (1.83 m) of vertical pipe or more. Section 12.2.2 Restrictor
on page 43, outlines restrictor recommendations depending
on burner flame appearance, and instructions on installation after
venting is completed.
LARGE RESTRICTOR
REMOVE TAB(S) TO
CREATE SMALL RESTRICTOR
BEND TABS TO APPROXIMATELY 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 8.1, Restrictor Assembly and Installation
