LG ARNU09GQAA4, Installation Manual

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Flaring Work
Main cause for gas leakage is due to defect of flaring work. Carry out correct flaring work in the following
procedure.
Cut the pipes and the cable.
1. Use the piping kit accessory or the pipes purchased
locally.
2. Measure the distance between the indoor and the
outdoor unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5 m longer than the pipe length.
Burrs removal
1. Completely remove all burrs from the cut cross section
of pipe/tube.
2. While removing burrs put the end of the copper
tube/pipe in a downward direction while removing
burrs location is also changed in order to avoid
dropping burrs into the tubing.
Putting nut on
• Remove flare nuts attached to indoor and outdoor unit,
then put them on pipe/tube having completed burr
removal.
(not possible to put them on after finishing flare work)
Flaring work
1. Firmly hold copper pipe in a bar with the dimension
shown in below table table below.
2. Carry out flaring work with the flaring tool.
Copper
pipe
90°
Slanted Uneven Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
Bar
Copper pipe
"A"
<Wing nut type>
<Clutch type>
Installation
18 Indoor Unit
Pipe diameter
Inch (mm)
A inch (mm)
Wing nut type Clutch type
Ø 1/4 (Ø 6.35) 0.04 ~ 0.05(1.1~1.3)
0 ~ 0.02
(0 ~ 0.5)
Ø 3/8 (Ø 9.52) 0.06 ~ 0.07(1.5~1.7)
Ø 1/2 (Ø 12.7) 0.06 ~ 0.07(1.6~1.8)
Ø 5/8 (Ø 15.88) 0.06 ~ 0.07(1.6~1.8)
Ø 3/4 (Ø 19.05) 0.07 ~ 0.08(1.9~2.1)
• When mechanical connectors are reused indoors, sealing parts shall be renewed.
(for R32)
• When flared joints are reused indoors, the flare part shall be re-fabricated. (for R32)
CAUTION
!