Panasonic CS-UW12GKE Specifikace stáhnout pdf (Strana 45)

2.Procedureandprecautionsforflareconnection

Table11R410Aflaringdimensions

Nominal

diameter

(in)

Outside

diameter

(mm)

Wallthickness

(mm)

A(mm)

R410Aflaring

tool,clutchtype

Conventionalflaringtool

Clutchtype Wing-nuttype

1/4 6.35 0.8 0-0.5 1.0-1.5 1.5-2.0

3/8 9.52 0.8 0-0.5 1.0-1.5 1.5-2.0

1/2 12.70 0.8 0-0.5 1.0-1.5 2.0-2.5

Table12R410Aflaringdimensions

Nominal

diameter

(in)

Outside

diameter

(mm)

Wallthickness

(mm)

A(mm)

R410Aflaring

tool,clutchtype

Conventionalflaringtool

Clutchtype Wing-nuttype

1/4 6.35 0.8 0-0.5 0.5-1.0 1.0-1.5

3/8 9.52 0.8 0-0.5 0.5-1.0 1.0-1.5

1/2 12.70 0.8 0-0.5 0.5-1.0 1.5-2.0

Table13R410AflaringandflarenutdimensionsUnit:mm

Nominal

diameter(in)

Outside

diameter(mm)

Wallthickness

(mm)

A+0,-0.4 B

dimension

Flarenut

width

1/4 6.35 0.8 9.1 9.2 6.5 13 17

3/8 9.52 0.8 13.2 13.5 9.7 20 22

1/2 12.70 0.8 16.6 16.0 12.9 23 26

Table14R410AflaringandflarenutdimensionsUnit:mm

Nominal

diameter(in)

Outside

diameter(mm)

Wallthickness

(mm)

A+0,-0.4 B

dimension

Flarenut

width

1/4 6.35 0.8 9.0 9.2 6.5 13 17

3/8 9.52 0.8 13.0 13.5 9.7 20 22

1/2 12.70 0.8 16.2 16.0 12.9 20 24

a.Checktomakesuretherearenoscratches,dust,etc.,ontheflareandunion.

b.Aligntheflaredsurfacewiththeaxialcenteroftheunion.

c.Useatorquewrench,andtightentothespecifiedtorque.ThetighteningtorqueforR410Aisthesameastheconventional

torquevalueforR22.Becareful,becauseifthetorqueistooweak,itmayleadtoagasleak.Ifitistoostrong,itmaysplit

theflarenutormakeitimpossibletoremovetheflarenut.

Table15R410Atighteningtorque

Nominal

diameter(in)

Outside

diameter(mm)

Tighteningtorque

N.m(kgf.cm)

Torquewrenchtighteningtorque

N.m(kgf.cm)

1/4 6.35 14-18(140-180) 18(180)

3/8 9.52 33-42(330-420) 42(420)

1/2 12.70 55(550) 55(550)

10.3.3.StoringandmanagingPipingMaterials

1.Typesofpipingandtheirstorage

ThefollowingisageneralclassificationoftherefrigerantpipematerialsusedforACs.

BecausethegaspressureofR410Aisapproximately1.6timesashighasthatofR22,copperpipeswiththethicknessshown

inTable10,andwithminimalimpuritiesmustbeused.Caremustalsobetakenduringstoragetoensurethatpipesarenot

crushed,deformed,orscratched,andthatnodust,moistureorothersubstanceentersthepipeinterior.Whenstoringsheathed

copperpipesorplaincopperpipes,sealtheopeningsbypinchingortapingthemsecurely.

2.Makingsandmanagement

a.Sheathedcopperpipesandcopper-elementpipes

Whenusingthesepipes,checktomakesurethattheyarethestipulatedthickness.Forflarenuts,besuretousedthesame

nutthatisusedontheACunit.

- 45 -

Refrigerantpipematerials

Pipeswithheatinusulatingcovers

Pipeswithoutheatinsulatingcover

(copperioes)

Commonnames

Unflared:Sheathedcopperpipes

Unflared:copperpipes

U U U U

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 64 65

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