Onix Tubing Installation Manual

2. Onix tubing and
Watts Radiant Clamps.
Each Onix TorqueTite
“
requires an
in.-lb. torque wrench for attach-
ment, while the SelfTite
“
clamps
need a pair of SqueezeTite
“
Pliers.
See manifold assembly section for
more details. The number of Onix
coils on the jobsite should corre-
spond to the number listed in the
Zone List report.
3. Manifold.
Only use manifolds provided by
Watts Radiant or Watts Radiant
manifold components for field con-
structed manifolds.
4. Unwinder.
A required component for easily
unrolling each precut Onix coil
without kinks and twist.
5. Field Repair Kit.
Each kit contains two barb-by-barb
splices and four Onix Clamps.
6. Manifold Mounting Bracket.
Each bracket is used to temporarily
or permanently mount each mani-
fold pair to the floor or wall.
7. Watts Radiant staple gun, staples
and NailTites.
8. Pressure test kit.
Each manifold pair must be pressure
tested. This helps ensure each Onix
connection has been assembled
correctly and that no damage has
been done to the tubing during
installation.
9. Chalk line.
Fasteners
One advantage Onix has over other
tubing options is its natural tendency
to remain where it is placed. If some
added support is needed, such as
around bends or tight corners, regular
duct tape can be used to secure the
Onix. In some cases, a quick setting
adhesive, such as Liquid Nails
™
can
be used.
DO NOT use the Watts Radiant staple
gun with an Onix sandwich applica-
tion. The staples will become the high
point, preventing the Onix from
Sandwich Application
Sandwich applications mimic Staple-
Up
™
in almost every way except one.
In a Sandwich application, the Onix
tubing is placed on top of the subfloor
instead of beneath. Sleepers are
installed every 8" or 16" on center,
depending on the floor construction
and floor covering requirements.
These sleepers mimic the function of
the joist in the main floor, aiding sup-
port for the upper subfloor that will be
added prior to the finished floor.
In some cases, a sandwich application
may be installed over an existing slab.
In these cases, the installation require-
ments are the same as they are for
Sandwich applications over a frame
floor. Variations occur in how the sys-
tems are insulated. Sandwich over slab
applications must be insulated between
the sleeper runs to isolate the heat loss
into the slab. For similar Sandwich
installation techniques, refer to Watts
Radiant s SubRay
™
installation manual.
Tools and Materials
Required
Make sure all materials are present
and in good working order. Following
are the most common items needed:
1. RadiantWorks Reports.
These reports will ensure the
proper amount of tubing is
installed in each area, along
with the correct manifold size.
page 26 Watts Radiant: Onix Installation Manual
Sup
Sup
ply
ply
/Return Man
an
ifol
ol
ds
ds
Floor
or
Cov
Cov
er
er
ing
ng
Upp
Upp
er
er
Sub
Sub
floor
loor
Sub
Sub
floor
loor
Oni
ni
x
Jois
ois
t
Foil
oil
Fa
Fa
ced
d
Insulation
on
Sl
Sl
eep
ep
er
er
Sandwich application over frame floor.
Sandwich