I suggest you get and use a copy of the Cornell Maple Tubing Notebook, By Steve Childs. If you are going to try running the vacuum line a long distance, you need to info in that notebook to determine the size vacuum line necessary to carry that vacuum. If the transfer line is not properly sized you won't get proper vacuum to the taps or the releaser.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.