Cutting/Extending The Piping - Samsung MH020FPEA Installation Manual

I
NSTALLING THE INDOOR UNIT

Cutting/Extending the Piping

12
E-
7.5 metres of piping is supplied with the air conditioner(Optional).
This length can if necessary be:
N Extended to a maximum length
N Shortened as required
☛
If more than 7.5 metres of piping is required:
N The assembly cable must also be extended
N Refrigerant must be added to the circuit by an
approved installer; otherwise, the indoor unit may
freeze
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.
O
90
O
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)
6.35 mm
9.52 mm
12.70 mm
5 Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
x x
Inclined Damaged Surface
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
6.35 mm
9.52 mm
12.70 mm
7 For further details on how to connect up to the outdoor unit and purge the
circuit, refer to installation manual of the outdoor unit.
Oblique Rough
x x
Depth(A)
1.3 mm
1.8 mm
2.0 mm
x
Cracked
Torque(kgf•cm)
140~170
250~280
380~420
Burr
x
x
Uneven Thickness