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Uncontrolled heat in condo
Uncontrolled heat in Condo . Thermostat set to 72, room 76. New Honeywell RTH 7500. New Taco 572 on return line. Disconnected thermostat, room temp. stays the same. 4 story Condo building on 4th floor. Is it passible that Circulator head pressure ( unknown) is overcoming the Taco return spring force and keeping it partly open?