Fill your fresh tank including a 1/4 cup of chlorine/bleach per 15 gallons. An easy way to do this is to pour the chlorine into the fill hose and the hook the fill hose to the RV.
Once filled, hook up to city water. DO NOT turn your pump on yet. Run each faucet on hot and cold until there is no pink including the toilet, outdoor faucets and showers.
Disconnect the city water and turn the pump on. Turn the valves on the hot water tank to de-winterize positions. There are 3 of them and several threads if you aren't sure which way to turn them.
Run the kitchen faucet on full hot until you have no air and can smell chlorine. (This will take a while). Proceed to run each faucet both hot and cold until you smell chlorine. Let the RV sit for 24 hours.
Some folks don't like the chlorine, so you can drain the fresh water tank after 24 hours and run clean city water though all the lines.
Last, replace the water filter. I wait until last because I don't want to contaminate a new filter with pink stuff and excessive chlorine.
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Tim & Lisa
2011 Georgetown 350