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Old 08-05-2009, 12:55 PM   #1
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Measuring TESP


Hi everyone. I was wondering how you go about measuring TESP if the evap coil is right on top of the AH. I know you measure directly after the filter (blower compartment) and between the AH and evap coil, but in several cases, it is difficult to find a good place to measure between AH and evap coil..

Any tips you have would be helpful.

Thanks.

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Old 08-05-2009, 04:14 PM   #2
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Measuring TESP


Drill hole in the furnace jacket.
Or, remove limit, and measure there.

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Old 08-06-2009, 11:16 AM   #3
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Measuring TESP


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Originally Posted by beenthere View Post
Drill hole in the furnace jacket.
Or, remove limit, and measure there.
Thanks beenthere.

Do you typically also drill a hole in the blower compartment door for the negative pressure, or do you remove a side plug and test there?
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Old 08-06-2009, 12:02 PM   #4
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Measuring TESP


Side plug if there is one. Or through a rubber wiring harness.
Drill if not.
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Old 08-06-2009, 12:13 PM   #5
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Measuring TESP


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Originally Posted by beenthere View Post
Side plug if there is one. Or through a rubber wiring harness.
Drill if not.
Thanks for your help.
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Old 08-10-2009, 06:37 PM   #6
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Measuring TESP


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Originally Posted by beenthere View Post
Drill hole in the furnace jacket.
Or, remove limit, and measure there.
Just wondering, when I remove the limit and use that hole to test, can I just let the limit hang down or should I remove the two wires from it first before I turn the power back on?

Don't want to shock myself.
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Old 08-10-2009, 07:13 PM   #7
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Measuring TESP


It can hang, as long as you keep it from shorting against anything.
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Old 08-11-2009, 12:43 PM   #8
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Measuring TESP


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Originally Posted by beenthere View Post
It can hang, as long as you keep it from shorting against anything.
Thanks for all of your help.

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