Originally Posted by GalsofEscape
I don't have much insight for the water heater - but filling the fresh water tank may take a bit of finesse. If i fill my tank too fast, it makes sounds like it is full, and water will come gushing out with the tank burping - but it will not be full. So fill it slowly. I use a water meter on the end of the hose, so i know how much water i have added to the tank.
After filling the tank, I fill the water heater by turning the pump on and opening the outside shower hot valve until water flows. I then turn off valve and pump, and refill the fresh water tank. The water heater can take a 6 gal chunk of your 20 gals of fresh water, so I top off tank afterwards.
Before towing, I release stored water pressure by opening outside shower valves. Outside shower is near high point in my system - I do enough to release pressure, not drain the tank. Sometimes, the heat of the sun on a folded trailer will cause the stored water pressure to get pretty high, causing issues with the pump pressure switches and backflow preventer. When I set up again, turn the pump on and all is pretty normal.
2019 Flagstaff T21TBHW A-frame
2022 Hyundai Palisade