Installation Guide
25
Routing
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 qualica-
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.
HOME-FLEX® connections to replace key valves can be located in a concealed location, pro-
vided that accessibility is not readily provided.
When multiple outlets are supplied from a
single tubing run (like in a series arrangement),
each downstream outlet branch can be con-
nected to the main run using a tee tting which
can be located in a concealed location. (Figure
4.7)
Modications to Existing Systems
New Ceilings: HOME-FLEX® ttings originally
installed in an unnished ceiling location can
be concealed in the event that a ceiling is installed at a later date.
Extensions to existing tubing runs: A concealed run of tubing can be extended with a new
pipe run to feed another appliance location, so long as their is sucient capacity to supply
both appliances simultaneously. If an accessible
location for the modication is not available,
the existing run can be modied with a tee t-
ting, resulting in a concealed tting (Figure 4.8)
Repairs to existing tubing runs: Damaged tub-
ing runs should be repaired in accordance with
Section 5.2 of this guide. The repair can result in
a line splice that may be located in a concealed
location.
Outdoor Installation Issues
The HOME-FLEX® jacket is UV resistant and able
to withstand exposure to sunlight. ANSI LC1-CSA 6-26 contains test requirements determin-
ing suitability for exposure of CSST to outdoor environments. HOME-FLEX® is certied to this
standard and is fully qualied for outdoor installations. However, to attain maximum longev-
ity of the jacket, it is recommended to avoid prolonged exposure to direct sunlight.
When installed outdoors, the yellow jacketing of HOME-FLEX® must be intact along the
entire run. Any areas of exposed tubing are to be wrapped with self-bonding silicone tape or
sleeved to prevent damage from acids and chlorides.
If HOME-FLEX® is installed in the equipment room of a swimming pool or hot tub, or other-
wise exposed to a corrosive environment which could be harmful to the tubing, the tubing
shall be installed in a protective device, and any exposed portions of the stainless steel tubing
Figure 4.7 Multiple Outlets Along Main CSST Run
Striker Plate
Floor
Ceiling
CSST Run
Figure 4.8 Extension of Existing Tubing Run
Striker Plate
Tee Fitting
Modied InstallationExisting Installation