Onix Tubing Installation Manual

page 54 Watts Radiant: Onix Installation Manual
Make sure to leave plenty of slack in
all Onix circuits (2–5 ft. is recom-
mended). A Watts Radiant manifold
box can be used to secure the mani-
folds within a structural wall. Watts
Radiant SnapClips and StrapDowns
can be used to organize Onix coming
from the floor and into the protective
enclosure.
Step 3:
Determine Zone
Boundaries
Before Onix is installed, visually
inspect the area to determine the zone
boundaries. This helps determine
where the first circuit is to be placed,
while identifying any obstacles that
may be in the way.
Step 4:
Confirm Tubing
Requirements
Measure the distance from the mani-
folds to the farthest point in the zone.
Make the minimum circuit length is at
least twice this distance. If not, the
Onix will not be long enough to reach
the farthest point and still have enough
length to return to the manifold.
Step 5:
Install the Onix
Place the unwinder next to the mani-
fold with a coil of Onix placed over
the center post and cut the binding
straps on the coil. Pull one end of the
Onix off the unwinder until the entire
coil is unwound. Loop the coil so the
two ends meet back together, forming
a loop. Loosely attach both ends of the
coil to the manifolds, one to the supply
and one to the return manifold. Take a
white paint pen, or other marker, and
mark each end of Onix with a number
1, indicating the first circuit installed.
This will help later in the installation
process.
Secure manifolds to
rebar or other support
Unwind the Onix to form a
loop and attach ends to the
manifolds
Lay Onix across slab area,
keeping tubing spaced to
design conditions.
Secure Onix every 12 to
18'' on center to the
rewire or rebar.
Typical slab snowmelt installation. Onix is installed using a double serpentine pattern.
Snowmelt