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Posted by HeatPro on September 24, 2004 at 15:55:50:
In Reply to: Boiler Pumps and Zones posted by Steve on September 24, 2004 at 13:03:05:
Just to get the focus correct, zone circulators or zone valves do not belong to the boiler, they are part of the system arrangement, just as a boiler is a part of the system.
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You can use a circulator for each zone.
http://64.226.150.132/hydronic/multcirc/multcirc.htm
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You can also use one circulator and zone valves to control each zone.
http://64.226.150.132/hydronic/mulvalve/mulvalve.htm
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If the old circulators were not making noise and heated the home, they can still be used, that is your choice - they can be replaced at any time when they go bad, if ever.