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2020 3-90-30007474Vermont Castings • Intrepid DV-IFT Owner’s Manual_R28 • 11/23
Figure 3.16 - Typical Vertical Venting Conguration
ST933
Selkirk vertical venting
6/07
Ceiling Support Collar
Ceiling
Support
Plate
Trim Plate
Firestop
Spacer
O󰀨set
Support Collar
Flashing
Storm Collar
Vertical Termination
Roof Pitch H(Min.)Ft. Roof Pitch H(Min.)Ft.
Flat to 6/12 1.0* Over 11/12 to 12/12 4.0
Over 6/12 to 7/12 1.25* Over 12/12 to 14/12 5.0
Over 7/12 to 8/12 1.5* Over 14/12 to 16/12 6.0
Over 8/12 to 9/12 2.0* Over 16/12 to 18/12 7.0
Over 9/12 to 10/12 2.5 Over 18/12 to 20/12 7.5
Over 10/12 to 11/12 3.25 Over 20/12 to 21/12 8.0
* 3 Feet. Minimum in Snow Regions
Horizontal
overhang
12
X
20 in.
(508 mm)
Lowest
Discharge
Opening
Termination
Cap
Roof Pitch
is X / 12
Vertical
wall
H (min.) - Minimum height
from roof to lowest
discharge opening.
24 in. min.
(610 mm)
Roof Pitch H (Min.) Ft. Roof Pitch H (Min.) Ft.
Flat to 6/12 1.0* Over 11/12 to 12/12 4.0
Over 6/12 to 7/12 1.25* Over 12/12 to 14/12 5.0
Over 7/12 to 8/12 1.5* Over 14/12 to 16/12 6.0
Over 8/12 to 9/12 2.0* Over 16/12 to 18/12 7.0
Over 9/12 to 10/12 2.5 Over 18/12 to 20/12 7.5
Over 10/12 to 11/12 3.25 Over 20/12 to 21/12 8.0
* 3 ft. minimum in snow regions
Storm Collar
Roof
Flashing
Figure 3.16 - Minimum Height from Roof to Lowest Discharge
Opening
For U.S. installations: The venting system must conform
with local codes and/or the current National Fuel Gas Code,
ANSI Z223.1/NFPA 54
For Canadian installations: The venting system must
conform to the current CSA B149.1 installation code.
Options
HHT o󰀨ers a complete line of component parts for both
horizontal and vertical installation. Many items are o󰀨ered
in decorative black as well as galvanized nish. The
galvanized pipe and ttings may be used for concealed
locations such as attics, or spaces where corrosion is a
factor, such as above the rooine. Decorative black painted
sections are recommended for use on visible interior runs.
Snorkel Terminations are available for applications which
may require vertical rise on the building exterior.
Planning Your Installation
There are two basic types of installations:
Horizontal Termination, Figures 3.17 & 3.18.
Vertical Terminations, Figure 3.19
20


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