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User Manual - Page 7

For RXS15LVJU.

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6
■
English
Outdoor Unit Installation
3. Flaring the pipe end
1) Cutthepipeendwithapipecutter.
2) Removeburrswiththecutsurfacefacing
downwardsothatthechipsdonotenterthepipe.
3) Putthearenutonthepipe.
4) Flarethepipe.
5) Checkthatthearingisproperlymade.
WARNING
•Donotusemineraloilonaredpart.
•Preventmineraloilfromgettingintothesystemasthiswouldreducethelifetimeoftheunits.
•Neverusepipingwhichhasbeenusedforpreviousinstallations.Onlyusepartswhicharedeliveredwiththeunit.
•NeverinstalladriertothisR410Aunitinordertoguaranteeitslifetime.
•Thedryingmaterialmaydissolveanddamagethesystem.
•Incompletearingmaycauserefrigerantgasleakage.
4. Refrigerant piping
CAUTION
•Usethearenutxedtothemainunittopreventitfromcrackinganddeterioratingfromage.
•To preventgasleakage,applyrefrigerationoilonlytotheinnersurfaceoftheare.(UserefrigerationoilforR410A.)
•Usetorquewrencheswhentighteningthearenutstopreventdamagetothearenutsandgasleakage.
Flare nut tightening torque
Liquid side
1/4 inch (6.4mm)
10.4-12.7ft • lbf
(14.2-17.2N • m)
Gas side
3/8 inch (9.5mm)
24.1-29.4ft • Ibf
(32.7-39.9N • m)
Valve cap tightening torque
Liquid side
1/4 inch (6.4mm)
15.9-20.2ft • Ibf
(21.6-27.4N • m)
Gas side
3/8 inch (9.5mm)
15.9-20.2ft • Ibf
(21.6-27.4N • m)
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration oil to
the inner surface of the
flare.
Do not apply refrigeration oil to
the flare nut to avoid tightening
with excessive torque.
[Apply oil]
• Align the centers of both flares and tighten the flare
nuts 3 or 4 turns by hand. Then tighten them fully with
the torque wrenches.
Service port cap tightening torque
7.9-10.8ft • lbf
(10.8-14.7N • m)
(Cut exactly at
right angles.)
Remove burrs.
Set exactly at the position shown below.
A
Flaring
Die
Check
Flare’s inner surface
must be flaw-free.
The pipe end must
be evenly flared in a
perfect circle.
Make sure that the
flare nut is fitted.
A
0-0.020 inch
(0-0.5mm)
Clutch-type
Flare tool for R410A
0.039-0.059 inch
(1.0-1.5mm)
Clutch-type (Rigid-type)
0.059-0.079 inch
(1.5-2.0mm)
Wing-nut type (Imperial-type)
Conventional flare tool
01_EN_3P300674-1B.indd 6 8/28/2012 5:50:59 PM
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