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Posted by Joseph Meehan on April 5, 2008, 7:46 pm
The sensor tells the unit how cold it is outside. When it gets very
cold line -20º you don't want the interior humidity to be as high as you
might want it when it is say 40º. If you tried to maintain 60% humidity
when it is -20º outside, you would tend to get a lot of moisture freezing on
windows, condensing in wall insulation etc.
> Hi;
>
> I had an April Aire 650 Whole House humidifier installed in my house.
> It is a bypass model. They ran a thermocouple outside and I am not
> quite grasping why. I am not questioning the install, I am just trying
> to understand the concept. I can see where the unit would like to know
> the temperature of the air so it can figure out the relative humidity,
> but to take that reading outside doesn't seem logical since it is
> using the return air in the house. It would seem to make more sense to
> me to place the thermocouple in the return air duct. Am I missing
> something? Please explain if you have the time.
>
> Thanks
> Pat
--
Joseph Meehan
Dia 's Muire duit
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