Re: Control HVAC air pressure

[Dick <r_a_nospam@xxxxxxxxx>]

Don't play around with your blower motor speed unless you know what
your are doing. If you slow it down too much when in a heating cycle,
it can lead to overheating and damage to the heat exchanger in your
furnace. If you slow it down too much when cooling it can lead to
freezing up the A-Coil in your furnace. Also many blower motors
probably wouldn't even work with a triac circuit.
I suggest consulting with an HVAC company.
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On Tue, 05 Apr 2005 14:46:20 -0700, steve v <svorres@xxxxxxxx> wrote:

>Hi I have an Motorola air pressure sensor.
>http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=12263
>
>I would like to allow it to regulate the air pressure in my house ducts
>and have it control my blower motor.
>
>Has any one seen a schematic that could be used to interface a Triac to
>an air pressure sensor ?
>
>The motorola sensors are kind of expensive, doe anyone know of a cheaper
>solution ?  than this one
>
>thanks