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  1. 11-25-2007, 01:23 PM #1
    fharrington
    fharrington is offline Regular Guest
    Join Date
    Jun 2006
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    11

    24VAC Terminals on Trane XV90

    I purchased an Aprilaire 700 humidifier and it's installed with the exception of the 24VAC to power the Aprilaire controller. Instructions indicate to power it off the R & C terminals of the furnace, but our Trane XV90 (White Rodgers controller 50A61-605) doesn't have a C terminal. I see the R terminal does have 24VAC when compared to the controller ground, but there's no obvious good place to connect into the controller ground.

    Question is... should I just power the Aprilare controller from a separate 24VAC transformer? Or is there a ground terminal on the furnace controller that I'm not seeing? Or could / should I tap in right after the fuse coming off from the transformer in the furnace?

    Thanks in advance!!!
  2. 11-25-2007, 08:45 PM #2
    BaldLoonie's Avatar
    BaldLoonie
    BaldLoonie is offline Global Moderator
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
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    31,540
    Sorry, site rules prohibit DIY discussions here. Contact whomever sold you the Aprilaire is best I can do for you.
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