The first register is connected to the ends of the first air circuit, in {HEAD ~ the first operational position}, to provide for {TAIL ~ residential used air intake} at the compressor and expulsion of the turbine discharge air into the atmosphere 
to provide for
The first register is connected to the ends of the first air circuit , in { HEAD ~ the first operational position } , to provide for { TAIL ~ residential used air intake } at the compressor and expulsion of the turbine discharge air into the atmosphere
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH