Question about Ruud UBHC Air Conditioner

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We have a Ruud Model ugta down flow furnace the installer put the evaporator coils for the A/C on the air inlet and now the furnace is always wet shouldn't the evaporator be on the air outlet of the furnace? They say that it is alright the way it is. My engineering experience is that equipment that is designed to operate in a dry location should be kept dry.

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  • cliff1hk Oct 08, 2009

    The company that installed the unit just came out to look it over again as soon as thier installation suppervisor saw the instillation he said that it was wrong. the air for this kind of system must pass the furnace first then the evaporator becauce the insulation on the furnace isn't enough to prevent sweating.and the electrical componants were getting wet.

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Regardless of where the evap coil is, the coil should have the correct drain pan to remove the water from the furnace to the drain. In either case, the furnace should have had a place to mount the evaporator, and if they put it there, it would be appropriate per Ruud's design. Furnace manufacturers don't put evap coils in furnaces because the geographic location of the house will affect the size coil needed. A big house in Kentucky would need a large furnace that might be the right size for a small house in Minnesota, but the Kentucky house would need a much larger cooling evaporator.

Like I said, though, Ruud would make the unit with a place to put the evaporator, and it might be able to go in either location.

The real issue here sounds like it's the way they have the drainage setup.

Posted on Oct 08, 2009

  • San Juan Vet Oct 08, 2009

    It's amazing to me often installers don't look at the installation manual!



    I'm not sure if there's a way to get your money back (on Fixya), but either way if you can get the installer to send a link to the installation manual I'll read through it and compare it to what you describe as their installation methods. I think you can send pictures on here also.



    No rush, either. I check in every few days at least, and it usually gives me an email when someone posts a comment. (Although it didn't today.)







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