the unit will only run when there is room to fill up the pressurized tank. So, say it comes with a 3 gallon tank, and you use one gallon, the unit will run to replace that gallon, and you will never have to lift a finger to do anything about it. The unit will always try to maintain the status qou.
As far as getting the water to your tank, I simply bought 30 ft roll of 1/4 inch tubing (wha tmine uses (I think) from the sprinkler area of home depot and used that. I am replacing it with an equal length of clear food grade tubing (i got the stuff from the sprinkler section and think it alters the taste of the water somewhat) When I need to top of fmy tank, I unroll it, hang the spigot on the tank, and let-er rip for a few seconds.
Oh, and all the parts you will need for making splits and what not are available at home depot. It's pretty simple, I installed my unit in half an hour. Only thing homedepot doesnt carry are new filters.
"Maybe in order to understand mankind, we have to look at the word itself: "Mankind". Basically, it's made up of two separate words - "mank" and "ind". What do these words mean ? It's a mystery, and that's why so is mankind." ~ Jack Handey