The Ecoflush toilet is just a VacuFlush with
a very small bowl. The owners manual has operating instructions. You'll also find an overview of how it works on the SeaLand website (link below). Yours prob'ly has the combination "vacuum generator" instead of separate vacuum tank and vacuum pump...click on the links embedded on the page to see it. It is ONLY a toilet...your holding tank is separate from it. It empties into a holding tank just as any other toilet would. As for maintaining your fresh water system, unless there's a lot of plumbing that isn't common to both tanks, it's not that much harder to recommission two tanks than it is to recommission one. If you're not gonna use enough water most of the time to keep it moving out of both tanks, you don't want to let water sit and stagnate in the second tank. Leave it empty, or--if that creates a trim problem, only fill both half full. You should get a full set of manuals for every bit of equipment on your boat. KEEP ALL of them!!! Even if the "manual" is only a single sales promo sheet...'cuz it will at least have the make/model and contact info for the mfr, if nothing else. And keep 'em on the boat, either in a 3 ring binder or an accordian file arranged alpha by equipment type --"bilge pumps, engine, heat/ac, toilet, winches" etc. Since you won't need it often--at least not after you've gone over every inch of your boat and found everything while looking at the manual to see how it works and how to maintain it--it can be stored in an relatively inaccessable space that's otherwise useless storage for most anything else...but when you need to check a trouble shooting guide or perform maintenance, the manuals won't do you any good if your don't have any more or they're at home. When you add or replace something, add or replace the literature in the file...not only will it be a valuable reference for you, but a Godsend for the next owner. Btw...you're taking delivery in two weeks...my book will be out in 3 weeks. It should answer a LOT of your question.
