Installation Guide

29
Appliance connections
Connections made between HOME-FLEX® and moveable appliances must be made with a
HOME-FLEX® Flexible Appliance Connector, or similar approved device.
Direct connections between HOME-FLEX® CSST and moveable appliances are not allowed.
Direct Connection
In most localities, xed appliances may be directly
connected to HOME-FLEX® exible gas piping sys-
tems. When located in a secure dedicated place,
like an attic or garage, the gas piping can be con-
nected directly to the appliance shut-o valve
without installing a special termination ange or
exible appliance connector. (Figure 4.16)
Pad-Mounted Equipment
Gas equipment like pool heaters, generators,
heat pumps, and gas air conditioners that are
mounted on concrete pads should connect to
the HOME-FLEX® system at a termination tting
with either black steel pipe or an approved out-
door appliance connector. Direct connection
of HOME-FLEX® to pad-mounted equipment is
allowed when the CSST is securely supported and
protected from physical damage, so long as such
practice is permissible by local and state codes.
Any exposed tubing should be wrapped with self-
bonding silicone tape, sealing the tting connection.
Roof Top Equipment
Special mechanical protec-
tion of HOME-FLEX® tubing
is not required for roof-
mounted equipment unless
the tubing may be subject
to physical damage in the
location. HOME-FLEX® tub-
ing should penetrate the
roof within 6 feet of the
equipment location, when-
ever possible. Long runs of tubing on the roof should be supported with nonmetallic blocks
at the intervals specic in Table 4.2, and raised above the roof at the height dictated by local
code. (Figure 4.17)
In addition to nonmetallic blocks, HOME-FLEX® can be supported with a strut or channel run-
ning from block to block. This provides a secure, damage resistant track for the CSST and
allows for the block spacing to be set at every 8
feet. The channel run should be a ⁄" galvanized
shallow channel with splice plates at joints and
bends. HOME-FLEX® tubing should be rmly
attached to each block with metallic clamps
designed for the strut, or other appropriate fas-
tener. Black UV resistant cable ties can be used
at intermediate points to ease the rolling out of
HOME-FLEX®. Blocks should be attached to the
roof surface in compliance with the roong man-
ufacturers instructions. (Figure 4.18)
appliance
shut-off valve
drip leg
sediment trap
(if
required by code)
union
(if required by code)
Figure 4.16 Direct Connection to Fixed Appliance
Non-moveable Appliance
Union (if required
by code)
Drip Leg
Sediment Trap
(if required by
code)
Appliance
Shut-off Valve
TYPICAL:
NON-METALLIC TUBING SUPPORT
SPACING PER TABLE 4-2
*TUBING ELEVATED
4-6" TYP. ABOVE ROOF
S
TANDARD ROOF
PENETRATION
TUBING CLIP
CSST
HUNG CEILING
SHUT-OFF VALVE UNION
GAS
APPLIANCE
*HEIGHT OF ELEVATION BASED ON LOCAL PLUMBING/BUILDING
CODE REQUIREMENTS AND/OR WINTER ICE BUILDUP.
Figure 4.17 Roof Top Equipment Installation
CSST
Tubing Clip
Standard Roof
Penetration
Typical: Nonmetallic Tubing Support
Spacing per Table 4.2
Tubing Typically Elevated
4-6" Above Roof*
Shut-off Valve
Union
Gas
Appliance
Hung Ceiling
* Height of elevation based on local plumbing/building code requirements
and/or winter ice buildup.
Figure 4.18 Rooftop Support with Strut
CSST
Clamp
Channel
Roof
Nonmetallic Block