Piping stacked coils

Evaporators may be stacked in banks, one on top of the other. If so, pipe them so that draining vapors from the upper coil cannot affect control of the coils below. These figures show a wrong way and the right way to pipe such an installation.

Excerpt from the Technical Institute Manual #2, available from the online store at the Refrigeration Service Engineers Society. RSES, the HVAC/R Training Authority.

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