I have a similar set-up on 475 taps. Two releasers about 900 feet from a 3hp Atlantic Fluid oil cooled liquid ring. Also, the vacuum is about 75 feet in elevation above the two releasers. I used 1 1/4 black tubing for vacuum line. The end of each mainline (2) is about another 1100 feet. I pull 27" at the end of the mainlines (with no leaks). I have two moisture traps...one near the releasers, and one next two the vacuum. I will occasionally get a little moisture in the trap near the releasers. I do pick up a lot of moisture in the oil of the vacuum... I have to drain the water out every couple of days...not sure why I get so much condensation in the oil. The moisture trap next to the vacuum is always bone dry.
Hawkins Sugar House
Sunapee, NH
2x6 Patrick Phaneuf, raised flu
3 Hp Atlantic Fluids Vacuum
500 taps