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Posted by HeatPro on January 17, 2006 at 10:51:21:
In Reply to: Boiler posted by Alan on January 17, 2006 at 10:43:15:
You want to read:
http://64.226.150.132/hydronic/service/purgeair.htm
Expensive is a relative term. Depends if you are willing to forego a couple of trips to Big Mac with the family to have a zone valve installed for several hundred dollars.
http://64.226.150.132/hydronic/mulvalve/mulvalve.htm