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Posted by Harold hydronicnetwork.net on February 29, 2004 at 19:41:50:
In Reply to: 2 zones - 1 boiler - hot water??? posted by Brett Anderson on February 29, 2004 at 19:17:59:
The NOTA wiring diagrams can get you started. This is an area of hot water heat that experienced plumbers rarely get into.
http://www.aresinc.com/nota/diagrams.htm