Installation Guide

Meter connections

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 necessary. 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 basements or crawl spaces does not require added pro-

tection so long as it is not concealed 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.

Connection by Special Termination Fitting

Do not use HOME-FLEX® CSST as a direct connection if the meter must be supported by the

piping system. If the meter is supported by the building structure, common practice is to

route the CSST system to a termination ange mounted to the exterior of the building, and

to connect the meter to the termination ange with rigid pipe. Alternatively, rigid pipe can

be used to penetrate the building, with an attachment to HOME-FLEX® inside the structure.

(Figure 4.13)

Direct Connection

If a direct connection from HOME-FLEX® to an independently supported gas meter is permit-

ted by the local utility, the connection should include an extra 3-6" of length to allow for

building settling and meter movement. Exposed sections of CSST are to be wrapped with

self-bonding silicone tape, especially if the building is of masonry construction. For direct

connections through masonry construction, a PVC sleeve is required, and also recommended

for wood frame construction. (Figure 4.14)

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

Floor

Support Joist

Greater than 3"