E-11
7.5 metres of piping is supplied with the air conditioner(Optional).
This length can if necessary be:
◆ Extended to a maximum of 15metres
◆ Shortened as required
☛ If more than 7.5 metres of piping is required:
◆ The assembly cable must also be extended
◆ You can install 15m of connecting pipe to the maximum,
and you don’t have to charge any additional refrigerant.
1 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 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.
Oblique Rough Burr
3 To prevent any gas from leaking out, remove all burrs at the cut end of the
pipe, 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 mm
9.52 mm 1.8 mm
5 Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
Inclined Damaged Surface Cracked Uneven Thickness
6 Align the pipes to be connected and tighten the flare nuts first manually and
then with a torque wrench, applying the following torque.
Outer Diameter Torque (kgf•cm)
6.35 mm 140~170
9.52 mm 250~280
7 For further details on how to connect up to the outdoor unit and purge the
circuit, refer to page 12.
Cutting/Extending the Piping
90
O
Ox x
xx x x
x
INSTALLING THE UNIT
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