Samsung AD18B1C09 installation manual Cutting/Extending the Piping, Depth a

INSTALLING THE INDOOR UNIT

Cutting/Extending the Piping

ENGLISH

5 metres(16ft. 5in) of piping is supplied with the air conditioner(Optional). This length can if necessary be:

◆Extended to a maximum of 15m(49ft. 3in)

◆Shortened as required

☛If more than 5m(16ft. 5in) of piping is required:

◆The assembly cable must also be extended

◆Refrigerant must be added to the circuit by an approved installer; otherwise, the indoor unit may freeze

1Make sure that you have the required tools available (pipe cutter, reamer, flaring tool and pipe holder).

2If you wish to shorten the piping, cut it using a pipe cutter, taking care to ensure 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 correctly and incorrectly.

90O Oblique Rough Burr

O x x x

3To prevent any gas from leaking out, remove all burrs at the cut end of the pipe, using a reamer.

4Slide a flare nut on to the pipe and modify the flare.

Pipe	Outer Diameter (D)	Depth (A)
Liquid refrigerant	6.35 mm(1/4˝)	1.3 mm(1/16˝)
Gas refrigerant	9.52 mm(3/8˝)	1.8 mm(1/16˝)
Gas refrigerant	12.70 mm(1/2˝)	2.0 mm(1/16˝)

5Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.

x x x x

Inclined Damaged Surface Cracked Uneven Thickness

6Align the pipes to be connected and tighten the flare nuts first manually and then with a wrench, applying the following torque.

Pipe	Outer Diameter	Torque
Liquid refrigerant	6.35 mm(1/4˝)	160kg•cm(11.6ft•lb )
Gas refrigerant	9.52 mm(3/8˝)	300kg•cm(21.8ft•lb )
Gas refrigerant	12.70 mm(1/2˝)	500kg•cm(36.4ft•lb )

7For further details on how to connect up to the outdoor unit and purge the circuit, refer to page 44.

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