Samsung AM NJD Series Installation Manual

Also see for AM NJD Series: User manual

Contents

Samsung AM NJD Series Installation Manual Manual pdf 11 page image

11ACutting/flaring the pipes1 Make sure that you prepared the required tools.(pipe cutter, reamer, flaring tool and pipe holder)2 If you want to shorten the pipe, cut it using a pipe cutter ensuring thatthe cut edge remains at 90° with the side of the pipe. There are someexamples of correctly and incorrectly cut edges below.Oblique Rough Burr3 To prevent a gas leak, remove all burrs at the cut edge of the pipe using areamer.4 Carry out flaring work using flaring tool as shown below.Flaring toolClutch type Wing nut typeADieCopper pipeYorkDieCopperpipeFlare nutOuter diameter(mm)A(mm)Flare tool forR410A clutch typeConventional flare toolClutch type Wing nut type6.35 0~0.5 1.0~1.5 1.5~2.09.52 0~0.5 1.0~1.5 1.5~2.012.70 0~0.5 1.0~1.5 1.5~2.015.88 0~0.5 1.0~1.5 1.5~2.05 Check if you flared the pipe correctly. There are some examples ofincorrectly flared pipes below.6 Align the pipes and tighten the flare nuts first manually and then with atorque wrench, applying the following torque.Inclined Damaged Surface Cracked Uneven ThicknessIn case of needing brazing, you must work with Nitrogen gas blowing.Outer diameter(mm)Connection Torque Flare dimension(mm) Flare shape(mm)kgf•cm N•m6.35 140~180 14~18 8.70~9.10 R 0.4~0.890° ±2°45° ±2°9.52 350~430 34~42 12.80~13.2012.70 500~620 49~61 16.20~16.6015.88 690~830 68~82 19.30~19.70