Samsung AC024JXADCH Installation Manual - Performing Leak Tests

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ENGLISH

Performing leak tests

LEAK TEST WITH NITROGEN (before opening valves)

In order to detect basic refrigerant leaks, before recreating the vacuum and 

recirculating the R-410A, it’s responsable of installer to pressurize the whole 

system with nitrogen (using a cylinder with pressure reducer) at a pressure 

above 40 bar / 580 PSI (gauge). 

LEAK TEST WITH R-410A (after the valves have been opened)

Before opening valves, discharge all the nitrogen into the system and create 

vacuum. After opening valves check leaks using a leak detector for  refrigerant 

R-410A.

Once you have completed all the connections, check for possible leaks using 

leak detector specifically designed for HFC refrigerants.

A(Gas)

B(Liquid)

❋ The designs and shape are subject to 

change according to the model.

To check for gas leaks on the Outdoor unit

check the valves on section A and B with a leak detector.

Refrigerant pipe work

Once you have checked that there are no leaks in the system, you can insulate the piping and hose.

1.  To avoid condensation problems, place an insulator around each refrigerant 

pipe.

•  When insulate the pipe, be sure to overlap the insulation. 

NOTE

•  When insulating the pipe, use non-slit insulator.

CAUTION

NBR

2.  Select the insulation of the refrigerant pipe.

f Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size.

f Less than Indoor temperature of 86 °F and humidity of 85 % is the standard condition. If installing in a high humidity 

condition, use one grade thicker insulator by referring to the table below. If installing in an unfavorable conditions, use 

thicker one.

f Insulator’s heat-resistance temperature should be more than 248 °F.

Pipe

Pipe size

Insulation Type (Heating/Cooling)

Remarks

Standard 

[Less than 86 °F, 85 %]

High humidity 

[over 86 °F, 85 %]

EPDM, NBR (Unit : inch)

Liquid pipe

1/4"~ 3/8"

0.35 t

0.35 t

Internal temperature is 

higher than 248 °F

1/2"~ 3/4"

0.51 t

0.51 t

Gas pipe

1/4"

0.51 t

0.75 t

3/8" ~ 3/4"

0.75 t

0.98 t