Installation Instructions

13. Undue stress or strain on the tubing and fittings should be avoided. Also avoid sharp bends, stretching, kinking
o
r twisting of the CSST tubing.
14. Sizing of
Pro-Flex
®
CSST must be performed using the capacity tables found in this Pro-Flex
®
Installation/Training Guide.
15. Pro-Flex
®
(CSST) flexible gas piping should not be connected to moveable appliances. Connections to
moveable appliances such as ranges and clothes dryers should be accomplished with a “flexible gas appliance
connector.”
16. Regulators are suitable for multi-poise mounting. When using a vent limiting device, the regulator must be
mounted in a horizontal upright position. For outdoor venting, the vent line must be at least the same size as
the vent connection and no longer than 30 feet before upsizing. When mounting a regulator outdoors, remove
vent limiting device and position regulator inverted with open port down.
17. A manifold assembly utilizing a pounds-to-inches regulator shall include a shut-off valve ahead of the
regulator and installed in an accessible location so that the regulator can be inspected, maintained and serviced
if necessary.
18. Buried or Embedded: CSST shall not be buried directly in the ground or directly embedded in concrete
(i.e.: patio slabs, foundations and walkways) When it is necessary to bury or embed CSST, the tubing shall be
routed inside a non-metallic, watertight conduit that has an inside diameter at least 1/2 inch greater than the
O.D. of the CSST Tubing For ends of conduit installed outdoors, the conduit shall be sealed at any exposed
end to prevent water form entering. No mechanical joint fittings are permitted
within the conduit.
Note: CSST must be buried in accordance with all local building codes.
19. Pro-Flex
®
(CSST) 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 Part 4 of the
NFPA 54, National Fuel Gas Code ANSI Z223.1 and/or CSA B149.1 Installation Codes or in accordance with
the requirements of the applicable local codes. For a ‘one-part’ pressure-test, the regulator should be removed
from the system. For a ‘two-part’ test, the regulator should be isolated from downstream test
pressures.
20. Along Side of a structure: When installed along the outside of a structure (between the ground and height of
6 ft) in an exposed condition, the CSST shall be protected from mechanical damage inside a conduit or chase.
A conduit or chase is not required if the tubing is installed in a location that will not subject the CSST to
mechanical damage.
21.
Meter Hook-Ups. Refer to the
Pr
o-Flex
®
installations and illustrations shown in this training guide. CSST
shall not be used as a means of support for the gas meter. Also check with your local code official or authority
having jurisdiction on meter hook-ups. Some restrictions may apply. Local code requirements will always take
precedence.
22. For a Piping system which includes manual gas valves listed as complying with ASME B16.44-2002.
Manually operated metallic gas valves for use in above ground piping systems up to 5 psi.
23. When using Pro-Flex
®
Flexible Gas Piping (CSST) then Metal Enclosures the CSST tubing must be protected
by grommets, bushing or armor (Floppy-Flex
™
), PVC tape, shrink sleeve material or a minimum of four (4)
wraps of #10 Mil Duct-T
ape.
This is to ensure that no physical contact will be made between the metal and the
CSST tubing that would cause mechanical wear.
24.
In accordance with the NFPA 54 Section 7.13, Tru-Flex Metal Hose Corp., requires proper bonding of the Pro-
Flex® gas-piping systems in a structure to the structure’s electrical grounding system. This must be performed
by a qualified person recognized by the local jurisdiction as capable of performing such work. These
requirements are for all Pro-Flex® CSST installed from this date forward.
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