Step 7 Installing Oil Traps - Samsung AC TXAP G Series Installation Manual

5 Check that the flaring is correct, referring to the
illustrations below for examples of incorrect flaring.
1
2
Damaged
Inclined
Correct
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.
• For installation with handling the R-32 refrigerant,
use the special tools for the R32 refrigerant (manifold
gauge, vacuum pump, charging hose, etc.).
• During tests never pressurize the appliances with
a pressure higher than the maximum allowable
pressure(as indicated on the nameplate of the unit).
• Never directly touch any accidental leaking
refrigerant. This could result in severe wounds caused
by frostbite.
• Never install a dryer to this unit in order to guarantee
• If the pipes require brazing ensure that OFN(Oxygen
• Nitrogen blowing pressure range is 0.02 to 0.05 MPa.
• If you need a pipe longer than specified in piping
3
• While removing burrs, put the pipe face down to

Step 7 Installing oil traps

Check the following list and install an oil trap.
Cracked Uneven
Thickness
• Based on cooling operation, install it on the gas side
• Install the oil trap only in between the outdoor unit
• Radius of curvature (R) on the oil trap are as follows;
diameter
(D, mm)
Radius of
curvature
(R, mm)
• Height of the oil trap (H): 4R ≤ H ≤ 6R
• When the indoor unit is installed at a higher place
Outdoor Unit
its lifetime.
Free Nitrogen) is flowing through the system.
codes and standards, you must add refrigerant to the
pipe. Otherwise, the indoor unit may freeze.
make sure that the burrs do not get in to the pipe.
pipe only.
and the first branch joint and it should be installed at
every 10 m.
Pipe
12.70 15.88 19.05 22.23 25.40 28.60 31.75
25 and 32 and 38 and
over over over
than the outdoor unit
R
41 and 51 and 57 and 60 and
over over over over
Indoor Unit
Oil trap (Install it at
H
every 10 m)
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