Importantly, the incoming air may be treated by {HEAD ~ various means} in {TAIL ~ order} to have its temperature, moisture and other components treated in the desired and needed way 
Importantly , the incoming air may be treated by { HEAD ~ various means } in { TAIL ~ order } to have its temperature , moisture and other components treated in the desired and needed way
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH