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View Full Version : Thermostat

hurcules88
Jul 29, 2011, 07:57 PM
Ho can a honeywell pro3000 be installed on a two wire hearting and ac system clled a split sysem with only two wiers at old thermostat
tkrussell
Jul 30, 2011, 04:22 AM
If you only have two wires at the thermostat location, those must be for the heat, where are the wires for the system?