Each coil has a plurality of {HEAD ~ heat transfer circuits} arranged in series when the coil operates as a condenser, and in {TAIL ~ a parallel} when the coil operates as an evaporator 
arranged in
Each coil has a plurality of { HEAD ~ heat transfer circuits } arranged in series when the coil operates as a condenser , and in { TAIL ~ a parallel } when the coil operates as an evaporator
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH