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Thread: Honeywell Stat

  1. #1
    Join Date
    Feb 2004
    Posts
    110
    I just purchased a Honeywell vision pro 8000 stat. One of the options is an outside temperature sensor that displays the temp on each stat in the house (C7089U1006). Presently I have a 6 conductor thermostat wire running to each of my stats, only 4 conductors are used. Can I use those 2 extra conductors to wire in the outside temperature sensor or will this cause eratic readings due to interference. Do I need to run a seperate 2 conductor wire?
    Thank you

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,244
    Honeywell says run separate wires. BUT, we have several homes where we couldn't and have had no trouble. If you want to take a chance, just remember if you get wierd outside temp readings, then you'll have to run new wires just for the sensor.

  3. #3
    Join Date
    Feb 2004
    Posts
    110
    Thank you.

    If I do have to run new wires, straight 18-2 or should I go shielded?

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,244
    I'd go shielded to be safe if you are gonna do it.

  5. #5
    Join Date
    Jan 2005
    Posts
    340
    Originally posted by lkaufman
    If I do have to run new wires, straight 18-2 or should I go shielded?
    18-2 twisted pair will be fine. The sensor is just a thermistor, and the twisted pair will provide more than enough isolation for stray AC or RF that may be around.

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