HI, When installing a dehumidifier should I close my crawl space vents? Where is the best place to put it in the crawl space? I also have vent fans installed in my crawlspace that exhaust air out, should I shut those off while operating the dehumidifier?

I'm going to be doing some work on my basement next week. This basement will never be finished. but I'm just trying to keep it dry. The floor is currently crushed stone. I may decide to put concrete over it some day, but have not made that decision yet. I've already finished up exterior work; gutters, etc. I'm planning rigid foam insulation on the walls. I am doing a vapor barrier over the floor. My question is regarding a vapor barrier over the walls. There is a lot of info out there on the web about not putting any type of vapor barrier over the basement walls at all. But one of the manufacturers of vapor barrier suggests putting their barrier over the wall. Check out this link [URL="I'm going to be doing some work on my basement next week. This basement will never be finished. but I'm just trying to keep it dry. The floor is currently crushed stone. I may decide to put concrete over it some day, but have not made that decision yet. I've already finished up exterior work; gutters, etc. I'm planning rigid foam insulation on the walls. I am doing a vapor barrier over the floor. My question is regarding a vapor barrier over the walls. There is a lot of info out there on the web about not putting any type of vapor barrier over the basement walls at all. But one of the manufacturers of vapor barrier suggests putting their barrier over the wall. Check out this link, they show the barrier over the wall! [URL="http://crawlspaceinsulation.com/properly-installing-crawl-space-insulation/"]http://crawlspaceinsulation.com/properly-installing-crawl-space-insulation/[/URL] So do I put the barrier over the wall or not?? Or floor only?