CSA 6.26:2018 pdf download.Fuel gas piping systems using corrugated stainless steel tubing
1.1 CSA 6.26 applies to fuel gas piping systems using corrugated stainless steel tubing (CSST), intended for installation in residential, commercial or industrial buildings, and including the following components as a minimum:
a) Corrugated stainless steel tubing (CSST);
b) Fittings for connection to the CSST; and
c) Striker plates (see Clause 3, Definitions) to protect the installed CSST from puncture threats.
Other components of piping systems covered by this Standard include gas manifolds, gas pressure regulators, manual gas valves, quick-disconnect devices and gas convenience outlets (see Clauses 4.3,Gas pressure regulators, 4.4, Manually operated gas valves and 4.5, Quick-disconnect devices and gas convenience outlets). If such additional components are required to complete the piping system installation, they are either provided as part of the piping system or specified in the manufacturer's installation instructions [see Clause 4.7-m)].
1.2 This Standard also applies to corrugated stainless steel piping systems in which portions of the piping are exposed to the outdoors as required to make connections to outdoor gas meters or to outdoor gas appliances, which are attached to, mounted on or located in close proximity to the building structure.
1.3 This Standard does not apply to CSST, whether coated or uncoated, intended for direct burial underground. Tubing is installed underground only when encased inside either an approved conduit or as part of an approved engineered system and in accordance with local codes and the manufacturer's instructions.
4.7 Instructions
Complete detailed instructions, including appropriate ilustrations, necessary for proper sizing,installation, inspection, and repair of the piping system shall be provided by the manufacturer. These instructions shall be included in a printed design and installation manual to be provided with the piping system. The manual shall include instructions on all topics and in the exact prescribed format shown in Annex A, Minimum design and installation manual requirements.
Included in the instructions shall be statements to the effect that:
a) A warning to the installer that the installation instructions shall be followed as prescribed by the manufacturer.
b) The installation shall be made in accordance with local codes, or, in the absence of local codes, in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Natural Gas and Propane Installation Code, CSA B149.1, the International Fuel Gas Code, the Uniform Plumbing Code, the Federal Manufactured Home Construction and Safety Standards, 24 CFR Part 3280, the Manufactured Housing Construction and Safety Standards, ICC/ANSI 2.0, or the Standard on Manufactured Housing, NFPA 501, as applicable.
c) Precautions shall be taken by the installer to ensure any exposed tubing is not damaged or abused during building construction or reconstruction.
d) The piping system is for use with fuel gases only and is intended for operating pressures not exceeding 5 psi (34.5 kPa) or 25 psi (172.5 kPa). The maximum actual operating pressure, including transients, shall not in any case exceed 6.5 psi (44.8 kPa) for 5 psi (34.5 kPa) rating or 30 psi (207 kPa) for 25 psi (172.5 kPa) rating.
e) If the piping system installation requires components in addition to those supplied by the piping system manufacturer, the installation instructions shall specify the specific components required.CSA 6.26 pdf download.