In article ,
"IMM" writes:

"Andrew Gabriel" wrote in message
...

Flow doesn't matter for a pumped system,

No so. In general the flow in a pumped system is on the bottom for
convenience and cosmetic appeal. The work better, pumped or not, when the
flow is on the top of the radiator.

Try reading the article again -- you seem to have missed parts of it.

--
Andrew Gabriel