Cutting/Extending The Piping - Samsung AS07A5MA Installation Manual

I I U
NSTALLING THE NDOOR NIT

Cutting/Extending the Piping

12
E-
16.5ft(5m) of piping is supplied with the air conditioner(Optional).
This length can if necessary be:
◆ Extended to a maximum of 'L' ft/m
◆ Shortened as required
☛
If more than 16.5ft(5m) 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
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
90 O
O x
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.
Pipe
Liquid refrigerant
Gas refrigerant
Gas refrigerant
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.
Pipe
Liquid refrigerant
Gas refrigerant
Gas refrigerant
7 For further details on how to connect up to the outdoor unit and purge the
circuit, refer to page 17.
Rough
x
Outer Diameter (D) Depth (A)
1 1
inch(6.35 mm) inch(1.3 mm)
4 16
3 1
inch(9.52 mm) inch(1.8 mm)
8 16
1 1
inch(12.70 mm) inch(2.0 mm)
2 16
x
Cracked Uneven Thickness
Outer Diameter
1
inch(6.35 mm) 10.1~12.3ft•lb(140~170kgf•cm)
4
3
inch(9.52 mm) 18.1~20.3ft•lb(250~280kgf•cm)
8
1
inch(12.70 mm) 27.5~30.4ft•lb(380~420kgf•cm)
2
Burr
x
x
Torque