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Old 09-27-2018, 05:38 PM   #17
elliott-maine
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Join Date: Jan 2016
Location: Maine
Posts: 55
If you leave the pump on all the time, the city water pressure is such that the check valve after the pump will stay closed, so the pump will not run. Once the city water is turned off, the check valve after the pump will not have the back pressure and will draw from the tank.



We only turn on the pump when we are hooked up to the city water.


Very few RVs have independent valves for each fixture, so you will have to shut off the water at the city water connection and shut off the pump. The best thing to do is to then open your low point drains and crack one of the fixtures, both hot and cold, to drain the water to the lines. The hot line connected to the cold may be a red PEX that runs to the hot water heater. By making this red, you can therefore trace the entire hot water system.
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Elliott, Vicky, and Sadie, our GSD
2014 Redwood36RE Titan Disc brakes, 17.5 " Sailun Tires
2013 RAM dually, CTD, Aisin Tranny, CC, LB 4x4
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