I sized mine by what my typical batches are to bottle. I got a 16 gal because of that. Most of my SS barrels are 26.5 gal, thus when I am bottling from a barrel, I then do it in 2 batches. For that I pump the entire barrel into my finisher, bring it up to about 200 F, then I actually filter it again and send the refiltered syrup to the bottler. When the bottler is near empty, I check the temp in the finisher, if it is still at 195 or more I just send it thru the filter and to the bottler, if below 195 I bring it back up to 200 and send it thru the filter and into the bottler.
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.