I'm trying to figure out the best way to control temperature w/ Cove Heaters (radiant). I want to know if there is a way to send lo-vo thermostat control to a relay that controls each heating zone (10-14). It'll be 20amp 240volt circuits. I know there are in-line controls, but I am looking for alternate solutions. If you know of a way please post a site that I can look at the options.
A plumbing store will have controllers that are for this purpose. The 24V thermostat is run from a small transformer and this control is passed to relays in a controller that activate the circulator and furnace or boiler. Or you can get some X10 type controllers which allow even remote control of your zones over the internet or computer controlled software from www.smarthome.com