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2.7.4 Recommended Line Sizing, Air Cooled Units
NOTE: 1. If equivalent piping length falls between two columns above,
choose the longer equivalent length.
2. Dual circuit units should use the same line size on both circuits.
3. If hot gas line refrigerant ow is upward, use “VERTICALUP”. If it is
downward, use “HOR.VERTICAL DOWN”.
4. If hot gas line refrigerant ow is upward use, “VERTICAL UP”, if it is down-
ward or horizontal, use “HORIZ. & VERTICAL DOWN”.