You can hook to city water and avoid the pump or you can fill fresh water tank and use the pump. Either will accomplish the same thing.
Yes you have to turn the water pump switch on, then it will activate when you open a faucet or it senses a drop in water pressure
If your unit was winterized then the water heater bypass valve is probably turned to bypass. The water heater WILL NOT fill in this position and will have to be turned out of bypass. The valve will be on the back of the water heater.
Hope this helps. Are you goin camping? It's easier this time of year to leave it winterized if you can.
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Chip Bruce, RPh
Kansas City, MO
2016 Impact 312
2017 Silverado 3500HD SRW
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