Air Distribution Concepts Rail - Manual (Page 2)

STEP TWO: SUSPENISION HARDWARE
The aluminum rail supplied comes in 10 foot sections. The orientation ( 12 o, clock ) suspen-
sion should be 3” from the diffuser to where the vertical cable connects to the rail support
bracket. Rail must be aligned with the centerline of the air flow. Determine the height of the
rail. Rail must be supported level in order for the components to assemble properly. Start from
the air handler end of system and support rails with .125” cable from rail support brackets up
to bar joist, eyebolts, beam clamps, etc. Because applications differ, what the cable can be
anchored to is up to the installer. The support brackets slide into the top opening of the rail. It
is recommended to use 2 brackets per 10 foot rail. Support the next rail and connect it to the
previous with the rail splicers. Rail splicers slip into each end of the rails. Bump the ends of the
rails flush and secure the splicers with the set screws. Complete this process until the entire
system is supported.
When fabric fittings are incorporated in your installation, align rails with the centerline of the sys-
tem. All rails must be installed at the same elevation.
When elbows are used in the system rail should be installed as indicated as above. Rail bends and
precut rail sections will be provided for suspension of the elbows. (Note: rail bends may come in
two sections, a splicer may be needed to connect.)
When tee’s or take offs are used install rails as above. Install rail perpendicular to main rail to sus-
pend branch runs. To insure proper alignment the main of the fabric system can be installed to the
rail and the air handler first. Then the cross rails perpendicular to the main can be installed to sus-
pend the branch runs. Brackets similar to the rail hinge are provided to connect the rail of the
branch to the main.
If the take off port is top even all glides will be the same distance of the diffuser. If the take off port
is centered on the side of the main, the glides are normally extended the same level as the glides
of the main duct. Fittings may have quick connect joints such as zippers to ease the installation