Installation Instructions

15
1. Pro-Flex
®
flexible gas piping (CSST) may only be installed by a Qualified/Trained Installer who has been trained in the use of
Pro-Flex
®
. A Qualified/Trained Installer card is required to purchase and install Pro-Flex
®
(CSST) Flexible Gas Piping.
2
. Only the components provided or specified by Tru-Flex Metal Hose Corp., (including Pro-Flex’s striker plates and Floppy Flex
™
a
rmor conduit) as part of the piping system are to be used in the installation.
3. Never use
Pro-Flex
®
flexible gas piping or system components as a ground electrode or as a grounding path for appliances or
electrical systems.
4.
Pro-Flex
®
(CSST) flexible gas piping 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
Pro-Flex
®
Installation/Training Guide. Contact with
sharp objects or harmful substances should be avoided.
5. Concealed tubing shall be protected from puncture threats, using the striker plates provided, at all points of penetration through
studs, joists, plates or similar structures. The extend of protection is defined as follows:
• All points of penetration less than 2 inches (50.8mm) from any edge of a stud, joist, plate etc., a striker plate is required
to provide protection at the area of support and within 5 inches (127mm) of each side (if appropriate) of the support.
• At points of penetration 2 to 3 inches (50.8 to 76.2mm) from any edge of a stud, joist, plate, etc., a striker plate is
required to provide protection throughout the area of support.
• At points of penetration greater than 3 inches (76.2mm) from any edge of a stud, joist, plate etc., no protection is
required.
•
Tubing routed horizontally through studs shall be protected from puncture threats between the studs using shielding
devices provided.
6. CSST greater than 1-in (25.4 mm) inside diameter installed within hollow cavity walls of 2 x 4 construction shall be protected
along the entire concealed length in the manner and using the shielding devices specified by the manufacturer.
7. The width of the installed striker plate, at the points of penetration through wall studs, floor joists, plates, sills, etc., shall be out
at least 1.5 times the outside diameter of the tubing.
8. Open ends of the tubing are to be temporarily plugged or taped closed prior to
installation to prevent entrance of dirt, dust or other debris.
9. The protective yellow jacketing should be kept in place as much as possible to
protect the tubing from corrosive threats. Contact with chemicals containing
chlorides must be followed by thorough rinse and wipe dry. This includes flux-
es used to solder copper tubing and acid base cleaners used to wash masonry.
10. Installation clearance holes for routing CSST are to be approximately 1/2 inch
greater than the O.D. of the CSST. Drilling of any structural member must be
in conformance with the local building codes. Refer to the table for the recom-
mended drill hole sizing.
11.Supporting CSST. Tubing shall be supported with pipe
straps, bands or hangers suitable for the size and weight
of the tubing, at intervals not to exceed those shown in
the table. Tru-Flex
®
Metal Hose Corp., recommends the
use of metal pipe straps because some plastic clips are
susceptible to breakage upon subsequent handling.
12. Recommended MINIMUM BEND RADIUS FOR
CSST:
4.0 Installation/Practices Guidelines
Recommended Minimum Bend Radius
f
or PR
O-FLEX
®
CSST
CSST Pipe Absolute Recommended
Siz
e
Min.
Bend
Min.
Bend
Radius Radius
3/8" (10mm)
9/16 inch
3 inches
1/2" (15mm)
3/4 inch 3 inches
3/4" (20mm) 1.0 inch 3 inches
1" (25mm)
3.0 inches
5 inches
1
1
/4" (31mm)
3.0 inches
5 inches
Recommended Horizontal and Vertical Support
Spacing for PRO-FLEX CSST
CSST Pipe Siz
e
Hor
iz
ontal Vertical
Support Spacing Support Spacing
3/8" (10mm)
4 ft.
10 ft
1/2" (15mm) 6 ft. 10 ft
3/4" (20mm) 8 ft. (USA) 6 ft. (CANADA) 10 ft
1" (25mm)
8 ft.
(USA) 6 ft.
(CANAD
A)
10 ft
1
1
/4" (31mm)
8 ft.
(USA) 6 ft.
(CANAD
A) 10 ft
Recommended Installation for
Clearance Holes for Routing CSST.
Tubing Size Drill Hole Size
3/8” (10mm) 1-1/8”
1/2” (15mm) 1-3/8”
3/4” (20mm) 1-1/2”
1” (25mm) 1 -3/4”
1
1
/4” (31mm) 2 -1/4”