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AlumiPex Radiant Tubing
Part Number 650-000-221/0298
14
I. Install the Tubing
1. Install the sleepers.
Beginning from one side of each room, use your
floor markings and the tube layout drawing to
place the sleepers.
Glue and nail each sleeper in place as shown in
Figure 10.
Bend routing sleepers can be made using a router
and fixture as shown or using a saber saw to cut
semicircles.
2. Drill tube penetration holes.
If the tubing will penetrate the floor in the room,
drill a 1½” hole at a 45 degree angle for each
penetration as shown in Figure 9.
Make sure the tube can be routed through the hole
from below and provide a minimum 6 inch bend
diameter (3 inch bend radius) for 1/2” tubing.
3. Install heat emission plates.
Install AlumiPex Heat Emission Plates in the
sleeper spaces, centered in the 1” gap.
Secure heat emission plates on one side only to the
sleeper below using 5/8” staples.
Leave the other side of the heat emission plates
free to move so the plates can conform to the floor
as the upper subfloor or finished flooring is
installed.
See Figure 11 for typical details.
4. Place tube roll on uncoiler.
5. Route free end of tubing to manifold.
Feed the free end of the tubing through any
penetration holes to the manifold.
6. Install manifold fitting on free end of tube.
a. AlumiPex Nickel-Plated Brass Manifolds:
Use only AlumiPex Euro conical fittings.
Refer to AlumiPex Manifold Instructions for
details and part numbers.
b. AlumiPex Copper Manifolds:
Use only AlumiPex tubing to NPT connectors.
7. Attach tube fitting to manifold SUPPLY connection
(bottom manifold).
8. Feed the tubing to the room as shown on the heating
system designer’s tube layout drawing, feeding the
outer (SUPPLY) tubing first.
9. Complete the layout for the circuit and route the
tubing back to the return manifold as shown on the
tube layout drawing.
10. Carefully cut the tubing to the correct height at the
return manifold. Apply an AlumiPex fitting for
attachment to the manifold.
11. Then attach the fitting to the RETURN (top) manifold.
12. Continue the process for each circuit.
13. See Figure 11, page 16, for an above floor
construction example.
Always wear safety glasses for eye protection
when handling AlumiPex tubing. The tubing
can spring back when pulled. Failure to follow
this guideline could result in serious personal
injury.
Figure 9 - Tubing penetration hole, typical
Joist, Typical
1/2" Tubing, Typical
(With 6" bend diameter)
Drill penetration holes
1½" diameter on 45
degree angle.
SubfloorSubfloor
SleeperSleeper
45
degrees