None RP-34-100 Guía de instalación descargar pdf (Pagina 7)

6. Secure the Tubing

• SecureallbendsandcornerstopreventHeatingPEXfromcurling,

creating an unwanted high point in the circuit.

• Leave 5' (1.52 m) slack on each circuit to allow adjustment of

the manifold position from its temporary location.

• Trim all “tails” of the cable ties to prevent any unwanted

surface protrusions.

• Keepallcircuitswithin10%ofthesamelength.

8. Inspection

• Visually inspect each circuit of tubing for possible damage caused

during installation. If damage is found, repair it using an approved

Watts repair kit. Wrap the repair with electrical tape (do not use duct

tape) to protect the connection from the concrete.

9. Pressure Test

Pressure test the system with 50 - 100 psi (3.4 - 6.9 bar) water or air for

24 hours. Do not use water if exterior temperatures are near or below

freezing (32.0°F (0.0ºC)) conditions.

• Attach the pressure test kit to the manifold pair making certain

the rubber o-rings are properly seated before threading the

unions together.

• UsingtheSchraedervalveforairorthewaterllvalvesforliquid,

llthesystem(airorwater,butnotboth).

• Closethevalveandll.Pressuretestthesystemwith50-100psi

(3.4 - 6.9 bar) water or air for 24 hours.

Note: If the exterior temperatures are near or below

freezing (32.0°F (0.0ºC )) use air to pressure test. If a

fluid must be used, use a 50-50 water/glycol

solution. Failure to use glycol may result in frozen

circuits. The cool night air will usually cause less

than a 10 psi drop in pressure as the water or air

contracts from the cold.

Do not test over 100 psi, (6.9 bar) as this will damage

the gauge on the test kit.

Some minor pressure changes will occur due to

the increased internal temperatures of the concrete

as it begins the curing process. Fluctuations in air

temperature may also cause a slight change in the

test pressure. In most cases, a 10-15 psi (0.7 - 1.0

bar) drop in pressure over a twenty four hour period

is not uncommon.

10. The Concrete Pour

• To help detect possible damage caused during the concrete pour, keep

the system under pressure. If damage is apparent, locate the area in

question and repair.

• Minor pressure changes will occur during the concrete curing process.

• Fluctuations in air temperature may cause slight changes in the test

pressure. In most cases, a 10-15 psi (0.7 - 1.0 bar) drop in pressure

over a 24 hour period is not uncommon.

• Heatedwatershouldnotbecirculatedthroughthenishedpourfora

minimum of 28 days, or until the concrete slab is fully cured.

Manifold Pressure Test Kit and Connection Detail

Slab Loop Installation Detail

Rewire

or Rebar

Heating PEX or

Heating

PEX-AL-PEX

Cable Tie

Barb

Compression Ring

Compression Nut

Heating PEX or

Heating PEX-AL-PEX

Balance Valve

SupplyManifold

Mounting Bracket

AirTestGauge

Schrader

Valve

Return

Manifold

Vent/Purge

Drain

Slab-on-grade Cutaway

Rewire

or Rebar

Heating PEX or

Heating PEX-AL-PEX

Slab

Su/jointfilesconvert/543493/bgrade

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