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  1. #1
    Join Date
    Dec 2015
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    Margate, Florida
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    Confused Daikin chiller unit

    Hi team. can someone help me with the tonnage in this chiller unit CAH004GDAC. I need to replace it with a split system. Thank you.

  2. #2
    Join Date
    Jan 2010
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    Isn't that the air handler model number ?

  3. #3
    Join Date
    Dec 2015
    Location
    Margate, Florida
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    Thread Starter
    Yes, this is a chiller air handler. receives 100% outside air. according to McQuay the 003 on the model number is the coil size, but it does not mention anything about the tonnage. I do not how many btus a coil that size can provide.

  4. #4
    Join Date
    Jan 2010
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    I read 4sq.ft. of coil for your 004 & 1200-3100 CFM's
    Is it a package unit ?

  5. #5
    Join Date
    Dec 2015
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    Margate, Florida
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    Thread Starter
    Yes, It is but it is 100% outside air and is cooled by chiller water.

  6. #6
    Join Date
    Jan 2010
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    So the compressor/s are inside this same unit ?
    What is the model number on the compressor ?

  7. #7
    Join Date
    Dec 2015
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    Margate, Florida
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    Thread Starter
    No, this is located in a building and the unit is cool with the chiller water coming from the chiller. This is a small air handler. but I would like to know what tonnage does this coil produce. Thank you for your help.

  8. #8
    Join Date
    Jan 2010
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    Does the chiller supply only this air handler or additional equipment ?

  9. #9
    Join Date
    Dec 2014
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    VT P99 had a good question ...but, if chiller does in fact, supply other equipment;

    Need 2 of these.....
    GPM through the unit.
    Actual CFM through the unit?
    Design temperature drop through the unit?

    Beware , if you just throw a standard "A"coil in the airstream, you will not achieve the same dehumidification as the original coil. (This is assuming of course that the original coil was size for dehumidification .) (It will be 3 or 4 times as thick as the split coil that you put in there.) Unless you size the AC and coil appropriately.
    There are load variations to take in consideration. You may have to add Hot Gas Bypass or digital scroll, that type of thing.


    Sent from my SM-G950U using Tapatalk

  10. #10
    Join Date
    Dec 2015
    Location
    Margate, Florida
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    Thread Starter
    Thank you for that great advise.

  11. #11
    Join Date
    Nov 2011
    Location
    East Side
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    that unit is designed specifically for that job. you will have to get the coil code from the unit, or the model and serial number, then contact Daikin support for information.

    search for parts list document # 700004500 page 12 tells you what you need to do for replacements, or technical data.

  12. #12
    Join Date
    May 2007
    Location
    City of Brotherly Love
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    Model CAH is a Vision Indoor Air Handling Unit. Every unit is built to order so the tonnage could be anything. Can you get me the serial number?

  13. #13
    Join Date
    May 2018
    Location
    VA/DC
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    first question is why are you installing a split system if its on chilled water?


    Also you called an air handler a chiller unit. Proper terminology is important or we may just believe you're a home owner.

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