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Old 05-28-2010, 11:06 AM   #1
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Slowing down Trane XV95 blower


Hello,

I've got an oversized 5-Ton Trane XV95/XLi20 in a zoned system that I'd rather slow down than scrap.

It's currently set at 350 CFM and showing poor moisture removal.

My zone control will shut down if the DATS goes below a set temperature, so I'm not too concerned about over-cooling and subsequent equipment damage.

How do I take this unit to a slower speed?

Thanks,
DK


Last edited by DukeKilroy; 05-28-2010 at 11:08 AM. Reason: Spelling
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Old 05-29-2010, 12:20 AM   #2
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Slowing down Trane XV95 blower


You might also check for return air leaks and have the refrigerant charge checked...


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Old 05-30-2010, 04:11 PM   #3
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Slowing down Trane XV95 blower


Thanks Houston. Are you saying that to go from 1780 to 1670 cfm (@ 0.5 SP), just change jumpers from:

OFF OFF OFF ON
to
ON OFF OFF OFF

is it that simple?

Duke
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Old 05-30-2010, 05:10 PM   #4
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Slowing down Trane XV95 blower


Remove power and give it a minute before changing your settings.

It must not be That simple, I've seen quite a few that were never changed from the factory setting to the correct setting for the application.

The condensation was actually blowing off of the evaporator coil, and missing the primary pan, the last time I saw this.

Last edited by Houston204; 05-30-2010 at 05:12 PM.
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Old 05-30-2010, 08:26 PM   #5
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Slowing down Trane XV95 blower


From the chart looks like 350 is as slow as it goes. Now what does he do? Smaller unit if Freon level is ok?
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Old 05-30-2010, 11:18 PM   #6
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Slowing down Trane XV95 blower


This furnace can be configured for 4 ton 450, 400, and 350 cfm per ton as well.

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