I'm not familiar with the Jay flight utilities plumbing. Generally, all campers work the same way, just differently. LOL
When you are on city water supply, your pump should be turned off and 60psi will be plenty of pressure if you get that much. Many have regulated it down to 50 psi. Many carry some water in the fresh tank for flushing on the road. The pump would need to be on and the piping valves in the correct configuration.
Make sure your water heater is full and not bypassed before you turn it on.
I would spend some time in the driveway getting faniliar with the different options for city water, Normal operation( without city water supply) and other functions of the rig.
It will make the first experience a lot more pleasant. If you add your Jay Flight model to your user id, it will get some more detailed responses.
Everyone asks questions, so don't worry about that.
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