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Temperature setting for my attic fan

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PQ

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Aug 21, 1998, 3:00:00 AM8/21/98
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I am looking a recommendation for the temperature setting for my attic fan.
The fan has a small box with a temperature gauge on it and I don't know
what to set it to.
Anyone have any suggestions?
Thanks in advance

Pete
Pet...@juno.com

Nick Inman

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Aug 21, 1998, 3:00:00 AM8/21/98
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I guess it kind of depends on your climate -
I set mine on 95. The original fan was set
at 105. I wish it was possible to lower the attic
temperature even more, but our daytime temperatures
have been running in excess of 100. Setting
the thermostat much lower will only lengthen
the time the fan runs at night - as it is, set at 95,
the fan is running from about noon until 11 at
night. The fan will never be able the attic
temperature even to the ambient temperature,
and when the outside air temperature is over
100, the fan will just run continuously.

I guess the bottom line is - if I were in a climate
were the outside temperature was consistantly
lower, I would set my thermostat lower. I have
tried to set mine about 10 degrees lower than the
outside temperature during the hottest part of the
day.

cmp

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Aug 22, 1998, 3:00:00 AM8/22/98
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PQ wrote:

> I am looking a recommendation for the temperature setting for my attic fan.
> The fan has a small box with a temperature gauge on it and I don't know
> what to set it to.
> Anyone have any suggestions?
> Thanks in advance
>
> Pete
> Pet...@juno.com

Every one I've ever installed has been pre-set to 105 F. Since I've put in a
couple of different brands, I'd guess that's standard. Any lower and the darn
thing might never shut off.

Chris


marc schneider

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Aug 27, 1998, 3:00:00 AM8/27/98
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In article <01bdcd1b$235e5e00$4d35b29b@pquartararo>,

"PQ" <Pet...@juno.com> wrote:
>I am looking a recommendation for the temperature setting for my attic fan.
> The fan has a small box with a temperature gauge on it and I don't know
>what to set it to.
>Anyone have any suggestions?
>Thanks in advance
>
>Pete
>Pet...@juno.com


-----------------Reasonable question and you will get different answers.

First thing is to not trust the temperature designations on that device. Put
a thermamature or old thermostat that still indicates temperature near the box
where you will set the temp.

I have mine set for 90 degrees. Some people will say that that is too low a
setting which leads to the fan being on for excessive amounts of time since
attics always are going to be hotter than the living area.

My interest in having the setting at 90 degrees is that you want to get a head
start on getting hot air out of there before it beginns to seep into the side
walls and downward into the living space. If you wait until the attic gets
hotter you are "baking" everything before you get around to venting the heat.

I have a 12 volt transsformer hooked up to the fan side of the teperature
switch and a 12 volt red light (and switcheds) in the living space so I can
control, override, etc. the attic fan and see when the fan has been activated.


Marc Schneider, Psy.D.
e-mail to: <drm...@wwa.com>
(call sign: W4NVY)

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