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Electronic damper for home use? Chris Shearer Cooper 06-26-2007
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Posted by Chris Shearer Cooper on June 26, 2007, 3:54 pm
I live in Colorado, and the standard summer weather pattern is that it gets
hot in the daytime (90s) but in the evening generally drops into the 60s.
What I want to create, is a system that detects ...

1) I'm in Cooling mode (not Heating)
2) The outside temperature is lower than the desired inside temperature
3) The actual inside temperature is higher than the desired inside
temperature

When that happens, I want the system to turn off the AC and open a damper to
bring in outside air. The damper would have to seal tightly enough that it
didn't let in too much cold air in the winter.

Any suggestions for how to do this without spending too much money? It
seems like I need...

1) electronic damper
2) control system smart enough to perform normal thermostat-type functions,
plus this extra stuff.

I'm new to this, so don't worry about insulting me by telling me things that
are normally considered obvious (grin).

Thanks!
Chris



Posted by Bubba on June 26, 2007, 4:29 pm
On Tue, 26 Jun 2007 13:54:19 -0600, "Chris Shearer Cooper"

>I live in Colorado, and the standard summer weather pattern is that it gets
>hot in the daytime (90s) but in the evening generally drops into the 60s.
>What I want to create, is a system that detects ...
>
>1) I'm in Cooling mode (not Heating)
>2) The outside temperature is lower than the desired inside temperature
>3) The actual inside temperature is higher than the desired inside
>temperature
>
>When that happens, I want the system to turn off the AC and open a damper to
>bring in outside air. The damper would have to seal tightly enough that it
>didn't let in too much cold air in the winter.
>
>Any suggestions for how to do this without spending too much money? It
>seems like I need...
>
>1) electronic damper
>2) control system smart enough to perform normal thermostat-type functions,
>plus this extra stuff.
>
>I'm new to this, so don't worry about insulting me by telling me things that
>are normally considered obvious (grin).
>
>Thanks!
>Chris
>
A two stage thermostat (cooling).
The first stage opens the damper.
The second stage controls the A/C.
This way wont control humidity very well.
If humidity control you'll need a little more money and use and
enthalpy control.
Bubba

Posted by Chris Shearer Cooper on June 26, 2007, 4:38 pm
Luckily, in Colorado we don't worry much about humidity (grin).

> On Tue, 26 Jun 2007 13:54:19 -0600, "Chris Shearer Cooper"
>
>>I live in Colorado, and the standard summer weather pattern is that it
>>gets
>>hot in the daytime (90s) but in the evening generally drops into the 60s.
>>What I want to create, is a system that detects ...
>>
>>1) I'm in Cooling mode (not Heating)
>>2) The outside temperature is lower than the desired inside temperature
>>3) The actual inside temperature is higher than the desired inside
>>temperature
>>
>>When that happens, I want the system to turn off the AC and open a damper
>>to
>>bring in outside air. The damper would have to seal tightly enough that
>>it
>>didn't let in too much cold air in the winter.
>>
>>Any suggestions for how to do this without spending too much money? It
>>seems like I need...
>>
>>1) electronic damper
>>2) control system smart enough to perform normal thermostat-type
>>functions,
>>plus this extra stuff.
>>
>>I'm new to this, so don't worry about insulting me by telling me things
>>that
>>are normally considered obvious (grin).
>>
>>Thanks!
>>Chris
>>
> A two stage thermostat (cooling).
> The first stage opens the damper.
> The second stage controls the A/C.
> This way wont control humidity very well.
> If humidity control you'll need a little more money and use and
> enthalpy control.
> Bubba



Posted by on June 26, 2007, 4:32 pm
On Tue, 26 Jun 2007 13:54:19 -0600, "Chris Shearer Cooper"

>I live in Colorado, and the standard summer weather pattern is that it gets
>hot in the daytime (90s) but in the evening generally drops into the 60s.
>What I want to create, is a system that detects ...
>
>1) I'm in Cooling mode (not Heating)
>2) The outside temperature is lower than the desired inside temperature
>3) The actual inside temperature is higher than the desired inside
>temperature
>
>When that happens, I want the system to turn off the AC and open a damper to
>bring in outside air. The damper would have to seal tightly enough that it
>didn't let in too much cold air in the winter.
>
>Any suggestions for how to do this without spending too much money? It
>seems like I need...
>
>1) electronic damper
>2) control system smart enough to perform normal thermostat-type functions,
>plus this extra stuff.
>
>I'm new to this, so don't worry about insulting me by telling me things that
>are normally considered obvious (grin).

        It's called an economiser, and to do a 'whole house' version
is possible, but not a DIY project. Get a quote from some
contractors.

        Or else ask in the DIY forum, alt.home.repair, not here.

>
>Thanks!
>Chris
>

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Posted by -zero on June 26, 2007, 4:36 pm

>I live in Colorado, and the standard summer weather pattern is that it gets
>hot in the daytime (90s) but in the evening generally drops into the 60s.
>What I want to create, is a system that detects ...
>
> 1) I'm in Cooling mode (not Heating)
> 2) The outside temperature is lower than the desired inside temperature
> 3) The actual inside temperature is higher than the desired inside
> temperature
>
> When that happens, I want the system to turn off the AC and open a damper
> to bring in outside air. The damper would have to seal tightly enough
> that it didn't let in too much cold air in the winter.
>
> Any suggestions for how to do this without spending too much money? It
> seems like I need...

Depends what "too much money" winds up being.

Here's one example;
http://www.ewccontrols.com/ultrazone/freshair.htm

-zero





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