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Lux TX500 Thermostat

Posted by meggon on December 16th, 2002 05:52 PM


I just bought a new programmable thermostat at Home Depot today. When I got it home it said it is not for use on three wire hot water systems. I'm not sure what this means. We took the old thermostat off the wall and there are three wires. Are those the wires they are talking about?

Thanks for your help,

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Topic Follow-ups:

  • Yup by tom b  12/16/02 07:09 PM
  • lux tx500 by mark  12/17/02 03:14 PM
  • lux tx500 by mark  12/17/02 03:18 PM

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