This is very interesting, but you said "bottom" on each statement, did you mean one of them to be at the top?. I'm thinking that stratification is better at the top entry as it gets colder towards the bottom. Right ?
Many thanks,
Dave
I'm changing my indirect hot water cylinder. All the diagrams and internet info says that the boiler feed goes in the top of the coil and returns out the bottom. But my old tank had it the outher way. Boiler Feed in the bottom of the coil and return out the top. Does it make any difference...