{HEAD ~ The control unit} also controls {TAIL ~ a flow rate} of the second fluid, such that the flow rate is higher in the cooling mode than in the heating mode 
{ HEAD ~ The control unit } also controls { TAIL ~ a flow rate } of the second fluid , such that the flow rate is higher in the cooling mode than in the heating mode
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH