Onix Tubing Installation Manual

Support
Onix within 6"
on either side of a
bend with StrapDowns or
SnapClips. Supports need to be
placed every 24"–32" when hanging
Onix in a horizontal position.
page 68 Watts Radiant: Onix Installation Manual
Fan Coil
Baseboard
Baseboards, Fan Coils and Manifolds Connections
Onix No-Sweat
™
Watts Radiant s Onix tubing offers a
unique solution to a common problem
associated with baseboard and fan coil
systems. Running supply and return
lines to these units can be a challenge,
especially in renovation projects.
Different techniques are used to con-
nect Onix to baseboard, fan coils or
manifolds. It is important to prevent
Onix from exceeding its minimum
allowable bend radius. If this radius
can not be maintained, a copper elbow
should be hard piped to the unit prior
to the installation of the Onix Barb
fitting.
CONNECTION DETAILS
1. Choose the correct Onix size for
the design flow rate (see below).
2. Choose the corresponding Onix
Barb or Elbow and clamp
(TorqueTite or SelfTite).
3. Solder the Onix Barb, or Onix
Elbow, onto the baseboard, fan
coil unit, or manifold. If an elbow
is required, install this prior to
installing the barb.
4. Slide the clamp over the Onix and
then the Onix over the entire barb.
5a. TorqueTite clamp: Tighten using
an in.-lb. torque wrench to proper
torque settings for each clamp size.
Torque settings are stated for each
clamp size on the instructions that
accompany the clamps.
5b.SelfTite clamp: open with a pair of
SqueezeTite pliers, making sure
not to over expand the clamp.
Follow additional installation instructions
included with the Onix fittings and clamps.
Onix
Barb
Onix Clamp
Onix
Onix
Onix Elbow
Fitting
Onix Clamp
Onix
Ordering numbers for Onix barbs, elbows, and clamps.
Tubing Size (I.D.) Onix Barbs Onix Elbows TorqueTites SelfTites
1/2’’ Onix 81000663 81000116 81002916 81000526
5/8’’ Onix 81000667 81000120 81002919 81000529
3/4’’ Onix 81000671 81000118 81002922 81000532
1’’ Onix 81000675 N/A 81002925 N/A
Estimated maximum output (BTU/ft.)
by pipe size for baseboard systems.
System Piping Size
Temperature 3/4’’ 1’’ 1-1/4’’
160¡F 520 560 610
170¡F 600 650 700
180¡F 680 730 790
Estimated maximum output (BTU) at
three flow rates for fan coil systems.
Rate of Flow
Temperature 1 gpm 3 gpm 5 gpm
160¡F 6500 7100 7300
170¡F 7400 8000 8200
180¡F 8000 8600 8950
6"
6"
Appendix