Focusv8

Your right there are 2 valves at the bottom, but only one would turn, that's why I had to drain the tank, my first thought was that the valve I turned off had got stuck but it not because that is the one that feeds the hot water cylinder I've followed the pipes down, also bathroom is not mains as we had no water in the bathroom once the tank was empty but still had water in the kitchen sink ( cold only )

st3v3 c

Have done it some more now, got half the toilet system filled up now stop and it was very slow when it was going.