Vermont Castings Intrepid INDVR Series, Installation & Operating Manual, Page: 15 / 48

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Venting System Assembly
General Information:
The Intrepid is approved for installation only with the Dura
Vent components listed on Page 14. Follow these and the
vent component instructions exactly.
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 :
The DuraVent Direct Vent Pro offers a complete line of
component parts for both horizontal and vertical installation.
Many items are offered in decorative black as well as
galvanized finish. The galvanized pipe and fittings may
be used for concealed locations such as attics, or spaces
where corrosion is a factor, such as above the roofline.
Decorative black painted sections are recommended for
use on visible interior runs. Decorative brass trim kits are
available for both Wall Thimbles and Ceiling Support Boxes.
Snorkel Terminations are available for applications which
may require vertical rise on the building exterior.
Planning Your Installation:
There are two basic types of Direct Vent Pro installations:
Horizontal Termination (Figs. 18 and 19)
Vertical Terminations (Figure 20)
When planning your installation, it will be necessary to select
the proper length of vent pipe for your particular requirement.
For horizontal installations, check these instructions to
determine the minimum clearance from the rear of the
appliance to the wall. It is also important to note the wall
thickness. Select the amount of vertical rise desired or
required, for “vertical-to-horizontal” installations (verify that
it is within the minimum and maximum limits. Refer to Page
7). To determine the length of vent pipe required for vertical
installations, measure the distance from the appliance flue
outlet to the ceiling, the ceiling thickness, the vertical rise in
an attic or second story, and allow for sufficient vent height
above the roofline. For multi-story applications, firestops
are required at each floor/ceiling level. If an offset is needed
in the attic, additional pipe and elbows will be required.
Figure 18
ST973
simpson rear install
8/07
Pipe Section
Round Ceiling Support /
Wall Thimble Cover
Square Horizontal
Termination
Firestop
Zero Clearance Wall Sleeve
Figure 19
ST974
simpson thru
the wall
8/07
Square Horizontal
Termination Cap
Round Ceiling
Support / Wall
Thimble Cover
Pipe Section
90° Elbow
Pipe Section
90° Elbow
Firestop
Zero Clearance
Wall Sleeve