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I am looking to upgrade my line voltage thermostat from a Dimplex mechanical thermostat to a Honeywell digital thermostat. Both thermostat has 2 wires on its back. Would the new thermostat work if I connect it the exact same way that I connected the old thermostat?

The current dimplex thermostate https://www.dimplex.com/en/electric_heating/thermostats_controls/products/ts_td/line_voltage_thermostats

Here's the one I want to upgrade to https://www.honeywellstore.com/store/products/non-programmable-thermostat-line-volt-baseboard-rlv3150a1004.htm#

I couldn't find a manual for the rlv3150, but there is one for rlv3120 https://www.honeywellstore.com/store/images/pdf/RLV3120-Owners-Manual.pdf

My gang box has 6 wires (not counting the bare copper wires). 2 wires each coming from 3 holes -- two holes near the top and 1 hole near the bottom.

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Other notes

  • Thermostat controls electric baseboard heaters, no fan
  • 240V - my electric panel has 2 linked switches for the baseboard heaters
  • Each baseboard heater uses 1500W or less
  • All the red wires from the gang box are connected together
  • The two black wires that are connected together are from the top two holes
  • The existing thermostat does not seem to be connected to the ground? The tiny copper wire on the bottom screw is cut off and not connected to anything.

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