LG MU2R17.UL0 User Manual download pdf (Page 18)

FLARING WORK AND CONNECTION OF PIPING

ENGLISH

Preparation of Piping

- Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the follow-

ing procedure.

- Use the de-oxidised copper as piping materials to install.

Cut the pipes and the cable

- Use the piping kit accessory or the pipes pur-

chased 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 in a

downward direction as you remove burrs 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 flaring

work)

Flaring work

- Carry out flaring work using dedicated flaring

tool for R32 as shown below.

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

indicated dimension in the table above.

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"

Outside diameter

Temper grade A

mm inch Annealed (O) mm

Ø6.35 1/4 Annealed (O) 1.1~1.3

Ø9.52 3/8 Annealed (O) 1.5~1.7

Ø12.7 1/2 Annealed (O) 1.6~1.8

Ø15.88 5/8 Annealed (O) 1.6~1.8

FLARING WORK AND CONNECTION OF PIP-

ING

1,MFL68883815,영영 17. 12. 16. 영영 9:57 Page 18

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LG MU2R17.UL0 User Manual Page 18

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