11
®
Link
Heat
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When installing PEX tubing through wall studs and floor joists be sure drill holes at least
1⁄2" (13 mm) larger than the PEX to ensure free movement of the tubing.
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Use protective sleeves or grommets when penetrating a hollow masonry wall or metal
studs.
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Protect the tubing with a nail plate if it is within 2" (5 cm) of the edges of a stud, plate, or
nailing surface.
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Tubing bundles must be protected by heavy gauge protective sheathing at the area of
abrasion.
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If PureLink® PEX is notched or cut, the damaged section must be cut out.
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HeatLink approves the burial of PureLink® Plus PEX-a tubing in concrete.
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HeatLink recommends continuous length tubing (no fittings) when installing PureLink®
PEX tubing in or under a slab.
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When entering or exiting a concrete slab the PEX tubing should always be protected by a
conduit elbow (86000 series) or a tubing sleeve.
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HeatLink NL fittings are suitable for direct, unprotected burial in clean, non corrosive
environments. However, HeatLink Stainless Steel Sleeves must be wrapped with heat or
cold shrink for burial.
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The use of hard binding wires or tape for tying PEX tubing to rebar or wire mesh in not
allowable, only soft breakable wire ties or plastic tie-straps should be used.
Wall
Stud
PEX ½"
Hole ~1"
Nail
Plate
Metal
Wall Stud
Grommet
Expansion and Contraction
(For further details see
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The design and installation of every piping system shall include means to accommodate
its expansion and contraction caused by temperature changes, movement of the soil,
building shrinkage or structural settlement.
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Small dimension expansion can generally be accommodated with slack and expansion
loops. (For PEX sizes over 1" see
