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Thread: coil matching

  1. #1
    Join Date
    Dec 2002
    Location
    davenport, iowa
    Posts
    778
    I would like to know about how coils are sized... do you match the evap to the compressor, the TXV to the evaperator, the compressor to the evap, the condensor to the ??? seems to me that once the load is known, one would start with the evap and match the metering device the the evap, then the pump the evap/metering device and then the condensor to the expected combined load of heat from the evap plus pump's heat of compression. ALSO, how to size them as compared to each other, rules of thumb are ok for me as I am wanting to get the gist of the idea.
    seems as though I read a lot about mismatched coils and the like and I am now curious enough to ask the above question.
    NOTE; I work on transportaion refrigeration products that are already sized/matched, so... please spare the sarcasm, thanks in advance to all who will help...any questoins about me are in my profile again,THANKS !!!
    Da Threadkilla

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,594
    If you are dealing with residential A/C, the bible is the ARI ratings. The manufacturers will give you which of their coils match. ARI will also give you 3rd party coil matches too though they are computer generated specs. http://www.ariprimenet.org


  3. #3
    Join Date
    Dec 2002
    Location
    davenport, iowa
    Posts
    778
    thanks for the info, bald one !!!
    Da Threadkilla

  4. #4
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,766
    As baldie said.

    You also match the condenser and indoor coil to meet the sensible, and latent requirements, that the manual j says you need.

    An indoor coil may match to the outdoor unit, but not give you the latent you need, or the sensible.
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