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