I have some questions about the expansion tank.
Is it disastrous if the charge is 60psi against a 70psi water pressure reading?
Instead of draining the tank to up the charge, can you disconnect the expansion tank (closing the valve that feeds the hot water tank first of course, and releasing the pressure in the hot water system by opening a hot water valve in the house), and pump it up the same way you did when you installed the tank?
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