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Adding refrigerant (R-410A)
The outdoor unit is loaded with sufficient refrigerant for the standard piping. Thus, refrigerant must be added if the piping is
lengthened. This operation can only be performed by a qualified refrigeration specialist. For quantity of adding refrigerant,
refer to "How to Calculate the Quantity of Adding Refrigerant" section.
1. Check that the stop valve is closed entirely.
2. Charge the refrigerant through the service port of liquid stop valve.
Do not charge the refrigerant through the gas side service port.
NOTE
3. If you cannot charge the refrigerant according to the upper steps, following these :
1) Open both liquid stop valve and gas stop valve.
2) Operate the air conditioner by pressing the K2 key on the outdoor unit PCB.
3) About 30 minutes later, charge the refrigerant through the service port of gas stop valve.
If necessary, refer to the pressure table classified by outdoor temperature.
NOTE
Outdoor unit
Balance
Vacuum pump
How to Calculate the Quantity of Adding Refrigerant
The quantity of additional refrigerant is variable according to the installation situation. Thus, make sure the outdoor unit
situation before adding refrigerant. This operation can only be performed by a qualified refrigeration specialist.
Single installation outdoor unit
AC✴✴✴JXSC✴H
24
Gas side stop valve(service port)
Liquid side stop valve(service port)
1
Indoor unit
Model
Interconnection pipe length (m)
0~30
30~40
40~50
+25 g/m over 5 m
50~60
60~70
70~75
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