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Deep Technical Chapters · Oil Management & Piping
Refrigeration Piping
Technician
Line sizing, risers, traps, insulation and pipework that doesn't leak or oil-log.
Piping is part of the system, not just plumbing between boxes. Size and route it for oil return, pressure drop, and leak integrity.
Line sizing
Size suction and liquid lines for the load range, balancing oil return and pressure drop. See Oil Return, Risers & Traps and Pressure Drop.
Insulation and vapour barriers
Suction lines and low-temp liquid lines need insulation with a continuous vapour barrier to prevent condensation and ice, which hide leaks and rot the insulation.
