Help wiring Marley 2546 Baseboard Electric Heater

I am trying to wire 2 Marley Baseboard heaters (Model 2546 - 1500 watts each) and a LUX ELV1 Programmable Therm. I am using 12/2 wire with a 20 amp circuit. I am running wire from the panel to the therm and then from the therm to each of the heaters. This is new work (as oppossed to replacing heaters or a therm) and I am not certain if the heater is emitting the proper amount of heat (i.e. are they getting enough power from the panel). Do I need to wire these heaters using a double pole? Will this therm support a double pole config? Thank you in advance for any help provided.

 

are they 120 or 240 vac ?

 

the instruction manual with the heater says 120/240. the therm says 120. This is part of my issue.

 

You need to return the thermostat you have and purchase a 240V model two-pole thermostat; you also need a double-pole 20A breaker.

 

sorry i didn't get back. ibpooks is correct. i wouldn't run that on 120 unless i had no choice. larger wire and breaker required for same output as 240. if your units were fed 120 and configured for 240 you're getting half the heat you were looking for. i think you'll be pleased with the 240 feed. good luck