Originally Posted by Davidceder
I always pressurize my system from the city supply prior to heading out OR whenever I have a fresh water supply. Then I fill my tank. If I fill my FW tank and than pressurize the system I loose many gallons of fresh water. In this manner the water heater is always full when I fill. If you are filling your tank, you have water so also use the city water hook up to fill the system.
I had to read this a couple of times.
I'm assuming what you really meant
to say was that you FILL your system from the city water supply prior to heading out?
Simply pressurizing an already full system would not take gallons of water, but filling the system will, no matter what the pressure.
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