E- 11ENGLISH5 metres of piping is supplied with the air conditioner(Optional).This length can if necessary be:◆ Extended to a maximum of 15 metres◆ Shortened as required☛ If more than 5 metres of piping is required:◆ The assembly cable must also be extended◆ Refrigerant must be added to the circuit by an approvedinstaller; otherwise, the indoor unit may freeze1 Make sure that you have the required tools available (pipe cutter, reamer,flaring tool and pipe holder).2 If you wish to shorten the piping, cut it using a pipe cutter, taking care toensure that the cut edge remains at a 90° angle with the side of the pipe,and referring to the illustrations below for examples of edges cut correctlyand incorrectly.Oblique Rough Burr3 To prevent any gas from leaking out, remove all burrs at the cut end of thepipe, using a reamer.4 Slide a flare nut on to the pipe and modify the flare.Outer Diameter (D) Depth (A)6.35 mm 1.3 mm9.52 mm 1.8 mm12.70 mm 2.0 mm5 Check that the flaring is correct, referring to the illustrations below forexamples of incorrect flaring.Inclined Damaged Surface Cracked Uneven Thickness6 Align the pipes to be connected and tighten the flare nuts first manually andthen with a torque wrench, applying the following torque.Outer Diameter Torque (kgf•cm)6.35 mm 140~1709.52 mm 250~28012.70 mm 380~4207 For further details on how to connect up to the outdoor unit and purge thecircuit, refer to page 12.Cutting/Extending the Piping90OO x xx x x xxINSTALLING THE U NIT