Rows are refering to the flat tubes/channels (they are sometimes round but if I recall correctly for the rad you are using they are flat) that connect tank to tank in a rad.
Passes refers to how many times the water passes through the rows. So a single pass would be an I and a dual pass would be a U shape path. Or in the case of the round tube type rads that are sans tanks then the shape would be nununun (where the nu is connected, I could'nt figure a nice easy way to diagram it)
Last edited by psychofunk; 11-17-2004 at 02:58 PM.
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