Then the refrigerant flows downwardly through header 54 and enters the two tubes forming the second tube circuit {HEAD ~ 32b} arranged in {TAIL ~ series} with the upper tube circuit 32a 
arranged in
Then the refrigerant flows downwardly through header 54 and enters the two tubes forming the second tube circuit { HEAD ~ 32b } arranged in { TAIL ~ series } with the upper tube circuit 32a
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH