OP, after going through this thread again, I realized I misunderstood which unit you used. I now see it’s a DSP. Which one did you use? Is it the ENX-T330?
I don’t know what the instructions say, but, it looks like the OP installed his with the schrader pointing down. My brain tells me to point it down so it can be drained if need be due to moisture that is inherent in compressing air