Daikin FTXN09NMVJU - Remote Controller Overview

9 ■English
Refrigerant Piping Work
1� 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.
Set exactly at the position shown below.
Flaring
A
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
Remove burrs.
Cut exactly at
right angles.
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.
Die
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.
2� Refrigerant piping
CAUTION
• Usethearenutxedtothemainunit.(Thisistopreventcrackingofthearenutasaresultofdeteriorationovertime.)
• Topreventgasleakage,applyrefrigerationoilonlytotheinnersurfaceoftheare.(UserefrigerationoilforR410A.)
• Useatorquewrenchwhentighteningthearenutstopreventdamagetothearenutsandgasleakage.
• Alignthecentersofbotharesandtightenthearenuts3or4turnsbyhand.Thentightenthemfullywithaspanneranda
torquewrench.
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
Torque wrench
Piping union
Flare nut
Spanner
Tighten
Flare nut tightening torque
Gas side
3/8 inch (9.5mm) 5/8 inch (15.9mm)
24-1/8 – 29-1/2ft • Ibf
(32.7-39.9N • m)
45-5/8 – 55-5/8ft • Ibf
(61.8-75.4N • m)
1/2 inch (12.7mm)
36-1/2 – 44-1/2ft • lbf
(49.5-60.3N • m)
10-1/2 – 12-3/4ft • lbf
(14.2-17.2 N • m)
Liquid side
1/4 inch (6.4mm)
2-1� Caution on piping handling
• Protecttheopenendofthepipeagainstdustandmoisture.
• Allpipebendsshouldbeasgentleaspossible.Useapipebender
forbending.
Wall
If no flare cap is
available, cover
the flare mouth
with tape to keep
dirt and water out.
Be sure to
place a cap.
Rain
01_EN_3P379970-1.indd 9 10/17/2014 12:57:25 PM