Adding Refrigerant (R-410A) - Samsung RAC Series Technical Data Book

13. Installation
13-2. Outdoor unit
The appearance of the unit may be different from the diagram depending on the model.
CAUTION
• After connecting pipes through the knock-out, cover the opening to prevent animals and debris from entering.

Adding refrigerant (R-410A)

The outdoor unit is loaded with sufficient refrigerant for standard piping. Thus, refrigerant must be added if the piping is lengthened. This operation can only be
1) Check that the stop valve is closed entirely.
2) Charge the refrigerant through the service port of liquid stop valve.
NOTE
• Do not charge the refrigerant through the gas side service port.
3) If you cannot charge the refrigerant according to the steps above, following these :
• Open both liquid stop valve and gas stop valve.
• Operate the air conditioner by pressing the K2 key on the outdoor unit PCB.
• About 30 minutes later, charge the refrigerant through the service port of gas stop valve.
NOTE
• If necessary, refer to the pressure table classified by outdoor temperature.
Make at least one round:
It will reduce noise and vibration
Balance
Outdoor unit
Gas side stop valve(service port)
Liquid side stop valve(service port)
Indoor unit 1
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