LG LH247HV Installation Manual download pdf (Page 11)

Connecting Pipes

Connecting Pipes

Preparation of Piping

Main cause of gas leakage is defect in flaring

work. Carry out correct flaring work in the fol-

lowing procedure.

Cut the pipes and the cable.

• Use the accessory piping kit or the pipes

purchased locally.

• Measure the distance between the indoor

and the outdoor unit.

• Cut the pipes a little longer than measured

distance.

•

Cut the cable 1.5m longer than the pipe

length.

Burrs removal

• Completely remove all burrs from the cut

cross section of pipe/tube.

•

Put the end of the copper tube/pipe to down-

ward direction as you remove burrs in order to

avoid to let burrs drop in the tubing.

Putting nut on

• Remove flare nuts attached to indoor and

outdoor units, than put them on pipe/tube

having completed burr removal.

(Not possible to put them on after flaring work)

Flaring work

•

Carry out flaring work using dedicated flar-

ing tool for R-410A as shown below.

Firmly hold copper tube in a bar(or die) as

indicated dimension in the table above.

Check

• Compare the flared work with figure below.

• If flare is noted to be defective, cut off the

flared section and do flaring work again.

Outside diameter "A"

mm inch mm

Ø6,35 1/4 1,1~1,3

Ø9,52 3/8 1,5~1,7

Ø12,7 1/2 1,6~1,8

Ø15,88 5/8 1,6~1,8

Installation Manual 11

ENGLISH

Copper

tube

90°

Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shining without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 22 23

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