Samsung AC012TXQLEC handleiding

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18

Installation Procedure

English

Installation Procedure

3 Connectthecharginghoseoflowpressureside

ofmanifoldgaugetothepackedvalvehavinga

serviceportasshownatthefigure.

CAUTION

• Thedesignsandshapearesubjecttochange

accordingtothemodel.

4 Openthevalveofthelowpressureside(A)of

manifoldgaugeanticlockwise.

Vacuum

pump

A(Gas)

B(liquid)

5 Purgetheairfromthesystemusingvacuumpump

forabout10minutes.

• Closethevalveofthelowpressuresideof

manifoldgaugeclockwise.

• Makesurethatpressuregaugeshows-0.1

MPa(-76cmHg)afterabout10minutes.This

procedureisveryimportanttoavoidagasleak.

• Turnoffthevacuumpump.

• Removethehoseofthelowpressuresideofmanifold

gauge.

6 Openthestopvalveofbothliquidandgassides.

7 Mountthevalvestemnutsandtheserviceport

captothevalve,andtightenthematthetorqueof

183kgfꞏcmwithatorquewrench.

8 Checkforgasleakage.

• Atthistime,especiallycheckforgasleakagefrom

the3-wayvalve’sstemnuts(Aport),andfromthe

serviceportcap.

CAUTION

• Connecttheindoorandoutdoorunitsusingpipes

withflaredconnections(notsupplied).Forthe

lines,useinsulated,unwelded,degreasedand

deoxidizedcopperpipe,(CuDHPtypetoISO1337or

UNIEN12735-1),suitableforoperatingpressures

ofatleast4200kPaandforaburstpressureofat

least20700kPa.Copperpipeforhydro-sanitary

applicationsiscompletelyunsuitable.

• Forsizingandlimits(heightdifference,line

length,max.bends,refrigerantcharge,etc.)see

“Connectingrefrigerantpipesection”.

Step 8 Performing the gas leak test

LEAK TEST WITH NITROGEN (before opening valves)

Inordertodetectbasicrefrigerantleaks,before

recreatingthevacuumandrecirculatingtheR-410A,

itistheresponsibilityoftheinstallertopressurize

thewholesystemwithnitrogen(usingacylinderwith

pressurereducer)atapressureabove0.2MPa,less

than4MPa(gauge).

LEAK TEST WITH R-410A (after opening valves)

Beforeopeningvalves,dischargeallthenitrogeninto

thesystemandcreatevacuum.Afteropeningvalves

checkleaksusingaleakdetectorforrefrigerantR-410A.

Onceyouhavecompletedalltheconnections,check

forpossibleleaksusingleakdetectorspecifically

designedforHFCrefrigerants.

A(Gas)

B(Liquid)

• Thedesignsandshapearesubjecttochange

accordingtothemodel.

Step 9 Connecting the drain hose to

the outdoor unit

Whenusingtheairconditionerintheheatingmode,

icemayaccumulate.Duringde-icing(defrost

operation),thecondensedwatermustbedrainedoff

safely.Consequently,youmustinstalladrainhoseon

theoutdoorunit,followingtheinstructionsbelow.

1 Makespacemorethan80mmbetweenthe

bottomoftheoutdoorunitandthegroundfor

installationofthedrainhose,asshowninfigure.

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