Onix Tubing Installation Manual

Watts Radiant: Onix Installation Manual page 33
If a plywood drop board is used, a
foil-faced insulation needs to be install
behind the plywood.
SubRay
¤
In some cases, the wall or ceiling cavi-
ty may not be deep enough to allow
for the Onix, insulation and support
material. In these cases, Watts Radiant
SubRay can be used. This will go on
top of the wall studs or ceiling joists.
A2
× 4 support plate will need to be
added to either end of the wall to help
secure the Header Stick. Make sure to
select the 18 mm SubRay product to
accommodate the 3/8" Onix tubing.
Wall Stud/
Ceiling Joist
Support for
Header Stick
Onix
Sleeper
Supply/Return Manifolds
Header Stick and Corner Sweep
Header Stick
Gripper
16”o.c.
Walls and Ceilings