I spoke to a tech at cadet . He informed me that I could run 3-1,000 watt 240v hydronic heater off 1 line type thermostat. Do I run the 3 sets of wires to each heaterfrom the stat or can I run wires to the center unit and branch off to the other 2? Each unit pulls 4 amps. The 3 heaters are heating a single room log home of 500-550 square feet. Bathroom has it's own heat.

Seems to me with one tstat turning on 3- 1000 watt/240v heaters at the same time would be one heck of a draw on your power system all hitting at the same time.
I`ll sit back and see what the experts have to say,I guess you could rig some type of sequenser so they don`t all start at once