Step 7 Optional: Cutting And Flaring The Pipes - Samsung AJ Series Installation Manual

NOTE
• The appearance of the unit may be different from the
diagram depending on the model.
• You can use the Cool and Heat modes in the following
conditions :
Model Cool
Outdoor
-10 °C to 46 °C
temperature
- It could take maximum 60 minutes to operate for the
protection of the compressor,if the outdoor temperature
is below -5°C.
Step 7 Optional: Cutting and flaring
the pipes
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 pipes, cut it with a pipe
cutter, taking care to ensure that the cut edge remains
at a 90° angle with the side of the pipe. Refer to the
illustrations below for examples of edges cut correctly
and incorrectly.
90°
3 To prevent any gas from leaking out, remove all burrs
at the cut edge of the pipe, using a reamer.
4 Slide a flare nut on to the pipe and modify the flare.
D
A
Pipe Flare
Heat
-15 °C to 24 °C
Oblique
Rough Burr
R 0.4 to 0.8 mm
D
L
Flare
Outer diameter (D) Depth (A)
ø6.35 mm 14 to 18
ø9.52 mm 34 to 42
ø12.70 mm 49 to 61
ø15.88 mm 68 to 82
5 Check that the flaring is correct, referring to the
illustrations below for examples of incorrect flaring.
1
2
Damaged
Correct Inclined
Surface
CAUTION
• Keep the piping length at a minimum to minimize the
additional refrigerant charge due to piping extension.
• When connecting the pipes, make sure that
surrounding objects do not interfere with or contact
them to prevent refrigerant leakage due to physical
damage.
• Make sure that the spaces where the refrigerant pipes
are installed comply with national gas regulations.
• Be sure to perform works such as additional
refrigerant charging and pipe welding under the
conditions of good ventilation.
• Be sure to perform welding and piping works for
mechanical connections under the conditions that the
refrigerant does not circulate.
• When reconnecting the pipes, make sure to perform
flared-jointing newly to prevent refrigerant leakage.
• When working on the refrigerant pipes and the flexible
refrigerant connectors, be careful that they are not
damaged physically by surrounding objects.
Flare dimension (L)
8.7 to 9.1 mm
12.8 to 13.2 mm
16.2 to 16.6 mm
19.3 to 19.7 mm
3
Uneven
Cracked
Thickness
21
English