Samsung AR18JCSNAWKYRG Manual do Utilizador descarregar pdf (Página 22)

Evacuating the indoor unit

• TheremainingairintheRefrigerationcycle,whichcontainsmoisture,

may cause malfunction on the compressor.

• Alwayscontacttheservicecenteroraprofessionalinstallationagency

for product installation.

• Topreventdirtorforeignsubstancesfromgettingintothepipes

during installation, do NOT remove the caps completely until you are

ready to connect the pipes.

The length of the pipe can be:

 •Extendedupto:seetablepage32

 •Shortenupto:seepage32

If you need a pipe longer than 3 or 4 meters:

• Youmustaddrefrigeranttothepipes;otherwise,theindoorunitmayfreeze.

Cutting or extending the pipe

1. Unscrew the caps at the end of each pipe.



All inert gas exhausts from the indoor unit.

The indoor unit is supplied with inert gas (nitrogen).

Before installing the unit, check if nitrogen gas ow out of indoor unit.

If this one isn’t true, DO NOT INSTALL THE UNIT since leakage could be inside the indoor unit.

Unscrew the

caps

Pipes

1. Make sure that you have all the required tools (pipe cutter, reamer, aring tool and pipe holder).

2. If you want to shorten the pipe, cut it using a pipe cutter, ensuring that the cut edge remains at 90° with the side of the

pipe (see below examples of correct and incorrect cut edges).

Oblique Rough Burr

Pipe

cutter

Pipe

3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.

• Facethepipedownwhileremovingtheburrstomakesurethatburrsdonotgetintothepipe.

Indoor outlet pipe Connecting pipe

Flare nut

5. Check if you ared the pipe correctly (see examples of incorrectly ared pipes below).

6. Align the pipes to connect them easily. Tighten the are nuts rst with your hands, and then with a torque wrench,

applying the following torque:

7. For further details on how to connect to the outdoor unit and evacuate the air, refer to page 46~48.

Correct

Uneven

Thickness

Cracked

Damaged

Surface

Inclined

• Excessivetorquecanbecauseofgasleakage.Ifextendingpipebywelding/brazingpleaseensurenitrogenis

used during welding/brazing process. The joint must be accessible and serviceable.

• Tightenthearenutwithtorquewrenchaccordingtospeciedmethod.

If the are nut is over-tightened, the are may break and cause refrigerant gas leakage.

4. Put a are nut slightly into the pipe and modify the are.

Outer Diameter (D) Depth (A) Flaring Size (B)

ø6.35 mm 1.3 mm 8.7 - 9.1 mm

ø9.52 mm 1.8 mm 12.8 - 13.2 mm

ø12.70 mm 2.0 mm 16.2 - 16.6 mm

ø15.88 mm 2.2 mm 19.3 - 19.7 mm

Pipe Flare

90°± 2°

±°

R 0.4~0.8

Outer Diameter

Torque

N•m kgf•cm

ø6.35 mm 14~18 140~180

ø9.52 mm 34~42 350~430

ø12.70 mm 49~61 500~620

ø15.88 mm 68~82 690~830

English-42 English-43

InstallatIon05

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