Onix Tubing Installation Manual

page 42 Watts Radiant: Onix Installation Manual
the Onix onto the first barb of the sup-
ply manifold, making sure the tubing
covers the entire fitting. If the Onix is
difficult to push onto the barb, lubri-
cate the end of the Onix with some
water.
Do not use soap, oil, WD-40
®
, or
other petroleum or silicone based
lubricants as they may damage the
interior of the Onix tubing.
Soap or
lubricants may make connections and
splices leak, even at low pressures.
Slide the Onix clamp back over the
Onix hose and barb connection. If
using TorqueTite clamps, do not over-
tighten. Tighten the TorqueTite clamp
using a preset torque driver according
to the settings stated on the instruc-
tions that come with the clamps. More
information on how to apply the Onix
clamp connections can be found in the
Appendix.
Caution: DO NOT over tighten the
clamps. Over tightening may cause
an improper fit.
For detailed information on the proper
steps to conducting a pressure test,
refer to the Appendix of the installa-
tion manual.
Step 10:
The Concrete Pour
To help detect possible damage caused
during the concrete pour, keep the sys-
tem under pressure. If damage is done,
locate the area in question and remove
the section of tubing from the con-
crete. Clean off the damaged area and
install a Watts Radiant splice fitting.
Wrap the fitting with electrical tape to
protect it from the concrete. Bring the
circuit back up to pressure to ensure a
proper fit on the splice.
Some minor pressure changes will
occur due to the increased internal
temperatures of the concrete as it
begins the curing process. Fluctuations
in air temperature may also cause a
slight change in the test pressure. In
most cases, a 10—15-lb. drop in pres-
sure over a 24-hour period is not
uncommon. For more information on
pressure testing, see the Appendix.
Concrete Slab