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  1. #1
    Join Date
    Aug 2008
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    Honeywell IAQ Thermostat- How can I tell if its hooked up right?

    How can I tell if the thermostat is hooked up right to control my variable speed air handler in terms of humidity control.

  2. #2
    Join Date
    May 2000
    Indianapolis, IN, USA
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    Have someone stand beside the furnace and listen very carefully as you turn the humidity level up & down. If it is wired right, they will notice a very slight drop in air noise when you call for dehumidification.

  3. #3
    Join Date
    Mar 2007
    Orlando, FL
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    You could also get out your meter and check the DHUM terminal in the AHU. If you set it up right and there is a demand for dehumidification there will be no votage and when there is no demand there will be voltage. If this is not the case then check the setup on the dry contacts. They should be set to normally closed. Don't forget you need to supply a power jumper to the other side of the dry contact.

  4. #4
    Join Date
    Jan 2004
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    Quote Originally Posted by Savant View Post
    You could also get out your meter and check the
    We generally don't tell home owners to go checking things with a meter.
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