Installation Guide

ManualsBrandsUnbranded ManualsOther Accessories4 in. x 9 in. CSST Striker Plate

Meter connections

should be wrapped with self-bonding silicone tape, beginning on the jacket and ending on

the nut of the HOME-FLEX® tting.

If HOME-FLEX® tubing is installed in an exposed condition alongside a structure between the

ground and a height of 6 feet, the tubing should be installed in a location such that it won’t

be subjected to mechanical damage, or be protected inside a conduit.

HOME-FLEX® should never be buried directly underground. To route HOME-FLEX® tubing

underground, it must be protected within a nonmetallic water-tight conduit that is at least

½" larger than the outer diameter (OD) of the CSST tubing. Fittings and joints are not permis-

sible in such runs—the run must be one unbroken line of tubing. Runs underneath slabs

must be sleeved and vented per local codes. (See Section 4.9, “Underground Installations”

on page 33)

Note: If installed underneath mobile homes or in crawl spaces, HOME-FLEX® should be

installed in accordance with the above Outdoor Installation Issues section.

4.4 Protection

Protection is required when HOME-FLEX® tubing is concealed, constrained, and within 3

inches of a potential threat.

HOME-FLEX® exible gas tubing must be adequately protect-

ed wherever it is at risk of damage from puncture, shearing,

crushing, or other physical threats. Tubing is to be protect-

ed at support points, and when passing through structural

members of the building such as studs, joists, and plates as

outlined in this section. If the tubing requires protection, the

measures in this section should be followed.

Striker Plates

Shielding devices (striker plates) are used to protect the

HOME-FLEX® tubing from puncture threats such as drill bits,

nails, screws, etc. Such devices are required when the tubing

is concealed and is constrained such that the tubing would

not be able to move if struck by a puncture threat.

1. At support points and areas of possible penetration less

than 2 inches away from any edge of a stud, joist, plate, etc., shielding is required both at

the area of support and within 5 inches of each side. (Figure 4.9)

2. At support points and points of possible penetration 2-3 inches from any edge of stud,

joist plate, or other member, shielding is required throughout the area of support. (Fig-

ure 4.10)

3. At termination points

using the HOME-FLEX®

termination ange,

HOME-FLEX® Flexible

Protective Conduit

should be installed to

protect the CSST in

the area between the striker plates and the outlet. (Figure 4.11)

4. For tubing routed horizontally between studs, striker plates should be installed at each

stud, and Flexible Protective Conduit, or other approved conduit, should be installed

across the entire length of the run.

5. If striker plates can’t reasonably be installed (like between oors with enclosed joist areas

or installations when walls are already in place), schedule 40 steel pipe has been found

Figure 4.9 Elevated View of Unsupported

Horizontal Tubing Run

⁄2"

Protected Area

Outside

Wall

Support

Adequate

Distance for

Escape

Non-Restrained Length

(Safe From Puncture)

Less than 2"

26"

Figure 4.10 Shielding at Support Area When Penetration is 2-3 inches from Edge

Support Joist

Striker Plate

Between 2-3"

Typical Wall Stud

(Wood or Metal)

Termination

Outlet (Stud

Mounted)

Stripwound

Metal Hose

Striker Plate

Interior Wall

3-1/2"

Less than 2"

Figure 4.11 Use of Flexible Protective Conduit

Striker

Plate

Less than 3"

Typical Wall Stud

(Wood or Metal)

Interior

Wall

Termination

Outlet (Stud

Mounted)

Flexible

Protective

Conduit

⁄2"

acceptable by CSA International for puncture protection. Steel pipe must have an inner

diameter at least ½" larger than the outer diameter of the HOME-FLEX® tubing (Table 4.4).

Protection must extend 5 inches beyond the pene-

tration of the structural members. A 12 inch pipe

length is acceptable for penetration of a single stud.

Despite this approval, the use of striker plates is rec-

ommended whenever possible.

Avoiding Puncture Threats

The best way to protect from puncture threats (and

potentially speed your installation) is to route tubing in

areas of the structures where no added protection is nec-

essary. The guidelines below will help the installer route

HOME-FLEX® tubing in areas where secondary puncture

protection isn’t required:

1. Support tubing such that it is more than 3 inches

away from any outside edge of a stud, joist, plate,

etc., or wall surface. (See Figure 4.12 compared to

Figure 4.10)

2. In non-restrained installations, make sure that the

tubing can move at least 3 inches from the direction

of potential penetration.

3. Tubing supported under joists in base-

ments or crawl spaces does not require

added protection so long as it is not con-

cealed by wallboard or ceilings and is at

least 3" away from puncture threats

through oors or ceilings.

4. Added protection is not necessary in unnished garage walls where the tubing is clearly

exposed so long as puncture threats do not exist from the outside wall.

Through-Wall Penetration

HOME-FLEX® tubing and its polyethylene jacket have been tested to the ame spread and

smoke density requirements of ASTM E84 and meets AGA and ANSI LC-1 limits imposed for

this criteria. HOME-FLEX® is classied as NFPA Class A/IBC Class A with a ame spread value

of 0 and a smoke density value of 80. Other requirements for re rated resistive constructions

may be imposed by local codes. The Qualied Installer must meet local building codes per-

taining to ame and smoke density regulations for nonmetallic materials at all times.

4.5 Meter connections

Natural gas meters are generally structurally supported independent of the building struc-

ture and piping system. When the gas meter is independently supported, HOME-FLEX® can,

in some localities, be used to connect the meter to the building gas system. If the gas meter

is not supported independent of the building structure or gas piping system, HOME-FLEX®

tubing cannot be used to connect directly to the meter.

Table 4.4 Steel Pipe Size for Puncture Protection

HOME-FLEX® Size Sch 40 Steel Pipe Size

½" 1¼"

¾" 1½"

1" 1¾"

Figure 4.12 Penetration Point Greater than 3" from Edge of Stud, Joist, Plate, etc.

Floor

Support Joist

Greater than 3"