Installation Guide

HOME-FLEX CSST 27
Routing
Routing through vertical wall framing
Requirements for boring through vertical mem-
bers of wall framing dier depending on whether
the member is bearing or not. For non-bearing
members (Figure 4.5), the size of the hole should
be no larger than 60% of the width of the member.
For bearing members, the size of such hole should
be no more than 40% of the member. (Figure 4.6)
Routing through metallic surfaces
When installing HOME-FLEX® through galvanized
steel studs, plastic grommets (often supplied
by the stud manufacturer) should be used to
reduce potential damage to the yellow jacket of
the HOME-FLEX® tubing. When installing through
holes in other metallic members, the tubing must be similarly protected from contact with
the member to prevent mechanical wear on the yellow jacket and tubing. Acceptable means
of protection include: rubber grommets, bushings, HOME-FLEX® Flexible Protective Conduit,
PVC tape, thermal contraction sleeve material, or a minimum of four wraps of 10 mil duct
tape.
Concealed Locations for Fittings
The HOME-FLEX® mechanical attachment ttings have been tested and are listed per the
requirements of ANSI LC1 and CSA 6.26 Standard (USA and Canada). This specication pro-
vides test requirements which certify ttings for concealed installations and connections to
appliances where concealing the ttings is the only practical alternative
These guidelines address some of the known situations which may require the use of a con-
cealed tting. While accessibility of ttings is always preferred, there are some situations
where concealing the ttings is the only practical option. This guide cannot address all appli-
cations of concealed ttings, but instead provides general instructions to demonstrate the
principles which apply to ttings listed for installation in concealed locations (National Fuel
Gas Code, NFPA 54 Chapter 7).
NOTE: Manifold stations which are composed of multiport manifold(s), shut o valve, and
pressure regulator shall not be installed in concealed locations regardless of the qualica-
tions of tubing ttings.
New Installations
HOME-FLEX® can be connected to steel piping systems through threaded pipe connections.
This can be a sub-out run to an appliance connection, be outdoors to a meter, etc.
Figure 4.4 Holes and Cuts in Top and Sole Plates
2x4
2x4
Stud
Top Plate
Sole Plate
2” Max.
Cut Width
W
Hole for Tubing
W/2 Max
W/2
W/2
Figure 4.5 Holes in Non-Bearing Walls
2x4
Holes up to 60%
of Stud Width
Non-bearing Wall
2
1
⁄8"
Max
3
1
⁄2"
1
1
⁄2"
5
⁄8"
Max
Figure 4.6 Holes in Bearing Walls
2x4
Non-bearing Wall
Holes up to 40%
of Stud Width
1
3
⁄8"
Max
3
1
⁄2"
1
1
⁄2"
1"
Max