Hello, I've just installed my Geyser, and it's running. How long do others with a Geyser find that it runs for? So far, mine runs for well over an hour after using a larger amount of hot water. It also seems that I may have to turn up the thermostat on the tank a little - has anyone else had to do similar? The unit is producing hot water. I imagine I'll have to do some fine tuning to get it all figured out with this, because it is a bit different than a conventional tank. Thanks.