York R-410A - Size of Tubing Connection; The Laying of Branch Part

Installation
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4.3) The laying of branch part:
At the same system, the laying form of shunt-wound outdoor units: the outdoor units are on the
same level, the branch joints for the outdoor units are on the same level, the T-shaped pipes for
connecting the balance pipes are installed vertically.
The laying form of Y-shaped branch pipes for shunt-wound outdoor units: Laying horizontally.
The laying form of T-shaped branch pipes for shunt-wound outdoor units: Laying horizontally.
The laying form of Y-shaped branch pipes for indoor units:
1) Laying horizontally. (the allowable deflection angle α=30°（-15°～ +15°）
2) Laying horizontally
4.4) Size of tubing connection
Capacity of indoor
units(HP)
Gas side Liquid side
≥56
Φ15.9(Flaring nut) Φ9.5 (Flaring nut)
≤45
Φ12.7(Flaring nut) Φ6.4(Flaring nut)