Installation Instructions

Description
Corrugated Stainless Steel Tubing (CSST) has been design certified by CSA (formerly know as AGA, The
American Gas Association Laboratory since 1990) for use as a fuel gas piping system. CSST has been tested per
ANSI/CSA-LC1 as required for approval and is listed as an approved gas piping material in the National Fuel Gas
Code-NFPA 54, BOCA National Mechanical Code, SBCCI Standard Gas Code, and the new International Code
Series. Pro-Flex
®
is a listed product with IAPMO and pursuant to section 302.1 Alternate Materials and Methods of
the Uniform Plumbing Code, may be installed with approval from the local administrative authority.
Approval: Conditions and Requirements
A flexible gas piping system using CSST must be installed in accordance with all local building codes and the
manufacturer’s instructions. The following check list is designed to assist the local administrative authority to
perform an inspection of a fuel piping system using corrugated stainless steel tubing.
1. Flexible Gas Piping may only be installed by a Qualified Installer who has successfully completed the
manufacturers Training Program. A manufacturer’s qualification/training card is required to purchase
and install Flexible Gas Piping.
2. Only the components provided or specified by the manufacturer (including strike protection) as part of
the piping system are to be used in the installation.
3. CSST routed in a location which is concealed, constrained and within 3 inches of a potential threat
will be protected against damage by protection devices listed in the manufacturers Installation/Training
Guide.
4. Sizing of the Flexible Gas Piping System must be performed using capacity tables found in the
manufacturer’s Installation/Training Guide or other code approved CSST capacity tables.
5. CSST should not be connected to moveable appliances. Connection’s to moveable appliances such
as ranges in clothes dryers should be accomplished with a “flexible appliance connector,” such as
Home Flex
®
St. St. Gas Appliance Connectors by Tru-Flex Metal Hose.
6. The Flexible Gas Piping System must be pressure tested for leaks during rough construction in
accordance with all local codes. In the absence of local requirements, test in accordance with NFPA
54, National Fuel Gas Code which is 1 1/2 times the maximum working pressure but not less than 3
PSI. To subject the entire CSST system to pressure test, the pressure regulators should be isolated
or removed.
7. Regulators are suitable for multi-poise mounting. When using a vent limiting device however, the
regulator must be mounted in a horizontal upright position.
8. A manifold assembly utilizing a pounds-to-inches regulator shall include a ball-valve ahead of the
regulator and installed in an accessible location so that the regulator can be inspected, maintained
and serviced if repair or replacement is required.
9. When installed outdoors, the external jacket shall remain intact as much as possible. Exposed
portions of the stainless steel tubing shall be wrapped to provide protection from corrosive threats.
10. For installation buried underground, concrete/asphalt or embedded in concrete, CSST must be
routed in a nonmetallic water-tight conduit which has an inside diameter at least 112 in. larger than
the outside diameter of the tubing. For under concrete/asphalt slab, sleeved CSST must be buried in
accordance with all local codes. No mechanical joints are permitted within the conduit.
11. Electrical Bonding must be in place as described on page 28 under “Electrical Bonding/Grounding.”
50
8.0 CSST Installation Checklist
WARNING: Improper installation or operation of the system may result
in fire, explosion, or asphyxiation. Only the components provided or
specified by Tru-Flex Metal Hose Corp., for the use of Pro-Flex
®
as part of
the fuel gas system are to be used in the installation. Use of components
from other flexible gas piping systems other than those specified as part
of Pro-Flex
®
system is prohibited and may result in poor system perform-
ance and serious bodily injury or property damage.
While every effort has been made to prepare this document in accor-
dance with all regional model codes in effect at its printing, Tru-Flex Metal
Hose cannot guarantee that the local administrative authority will accept
the most recent version of these codes. It is the ultimate responsibility of
the qualified installer to determine suitability and acceptance of any build-
ing component including gas piping. Tru-Flex Metal Hose Corp. manu-
facturers of Pro-Flex
®
CSST assumes no responsibility for labor or
material for installations made without prior determination of local
code authority acceptance.
5. CSST should not be connected to moveable appliances. Connection’s to moveable appliances such
as ranges in clothes dryers should be accomplished with a “fl exible appliance connector.”
WARNING: Improper installation or operation of the system may result
in fire, explosion, or asphyxiation. Only the components provided or
specified by Pro-Flex, LLC, for the use of Pro-Flex
®
as part of the fuel gas
system are to be used in the installation. Use of components from other
flexible gas piping systems other than those specified as part of Pro-Flex
®
system is prohibited and may result in poor system performance and
serious bodily injury or property damage.
While every effort has been made to prepare this document in accor-
dance with all regional model codes in effect at is printing, Pro-Flex, LLC
cannot guarantee that the local administrative authority will accept the
most recent version of these codes. It is the ultimate responsibility of the
qualifi ed installer to determine suitability and acceptance of any build-
ing component including gas piping. Pro-Flex, LLC manufacturers of
Pro-Flex® CSST assumes no responsibility for labor or material for
installations made without prior determination of local code authority
acceptance.
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