Rod -
As Wayne points out, it will be hard to find a place to put an accumulator (i.e., pressure tank) in a 2720SL. One of our members - maybe Bob_Rederick? - bought the small Shurflo accumulator from Camping World, and was disappointed with it. In order to stop the cycling, something bigger is needed. Fortunately, aside from the annoyance factor, there is nothing wrong with having the pump cycle on and off like that.
By the way, Al-n-Sue mentioned that
Quote:
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The water system is a "demand" system that works off the pressure in the tank.
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Rather than "tank", I think he meant "pipes". The pump pressurizes the system, meaning the water in the pipes, but there is no pressure tank in the usual sense. The fresh water tank under the kitchen sink is a water storage tank, but it is not pressurized. Only the water pipes themselves are pressurized.
Hope this helps.
Bill