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Posted by Heatpro on November 03, 2005 at 17:15:53:
In Reply to: Cast Iron Rads & New Boiler posted by Daniel on November 03, 2005 at 11:58:47:
Putting cast-iron rads in series makes the heating unpredictable as it depends too much on exact sizing of each radiator in the room for heat loss. You do better to design a one-pipe loop for each zone. Follow the instruction here:
http://64.226.150.132/hydronic/onepipe/index.htm