Samsung AM***XMDCH Series Installation Manual page 18

Refrigerant pipe installation
Refrigerant pipe installation examples
Using a Y-joint
Using a header joint
Allowable length of the refrigerant pipe and the installation examples
Connection by Y-joint
Outdoor unit
Connection by Y-joint/EEV kit
Outdoor unit
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Using a Y-joint/EEV kit
Using a header joint/ Y-joint