Onix Tubing Installation Manual

ManualsBrandsWatts Radiant ManualsHeatingOnix - 1/2" Diameter - Radiant Tubing - 250' Length

Ste

p 5:

Frame F

loor: C

: C

ounte

r Flow

thod

Return Manifold

Supply

Manifold

Frame F

loor: C

: C

ounte

r Flow

thod

Ste

p 4:

Supply

Manifold

Return Manifold

Ste

p 3:

Return Manifold

Supply

Manifold

Frame F

loor: C

: C

ounte

r Flow

thod

Ste

p 2:

Supply

Manifold

Return Manifold

Frame F

loor: C

: C

ounte

r Flow

thod

Ste

p 1

Return Manifold

Supply

Manifold

Frame F

loor: C

: C

ounte

r Flow

thod

Frame Floor: Long Manifold

Flow

Capped End

Supply Manifold

Return Manifold

Long manifolds are installed perpendicular to the floor joists. To ensure balanced

flow through each circuit, a reverse return method is recommended. A reverse return

manifold requires a third copper line to be installed. This extra line allows each

circuit to “see” the same total manifold length, thus creating a balanced system.

For more information on long manifolds and other manifold options, refer to the

Appendix.

Flow

Capped End

Supply Manifold

Return Manifold

Layout Examples

Watts Radiant: Onix Installation Manual page 25

Staple-Up

Supply

Return

Step 1

Supply

Return

Step 2

Supply

Return

Step 3

Supply

Return

Step 5

Supply

Return

Step 6