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Posted by Harold hydronicnetwork.net on February 24, 2004 at 08:00:20:
In Reply to: Re: Boiler-Baseboard Heating System Thermostat posted by JTW on February 23, 2004 at 18:49:48:
The problem is that people buy a two-wire thermostat for a 3-wire zone valve and either have to change the zone valve head or get the proper thermostat that can handle the 3-wire (drive-open, drive-closed) zone valve head.
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