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  1. #1
    Join Date
    Aug 2013
    Posts
    67
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    Carrier Infinity component compatibility

    Hi,

    I am about to accept a bid on the following Infinity system for a 3500 square foot two story home in Nebraska, which also has a finished basement. Here is the equipment:

    Carrier 24ANB748A003 Infinity 17 compressor
    Carrier 59MN7A Infinity high-efficiency variable-capacity furnace
    Carrier CNPVP6124ALA vertical design N-evaporator coil.
    Carrier Infinity Touch control.

    Here’s my question to all of you... is this a matched system?

    I ask this because the load calc (done with a full manual J) came out to 4 tons, and the compressor is a 4 ton, but when I Google the coil it says it’s a 5 ton coil. My contractor says that this is what is necessary according to AHRI guidelines in order to actually get a cooling load of 4 tons; he said the fact that Carrier calls this a 5 ton coil is not relevant. Is this correct? Any thoughts?

    Thanks!

  2. #2
    Join Date
    Jul 2006
    Location
    Prata di Pordenone
    Posts
    7,653
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    The best thing is ask your contractor for the ahri sheet that confirms the efficiency rating. The model number of the coil is just a number not a ton size
    Go Trump

  3. #3
    Join Date
    Aug 2007
    Location
    Northern VA 38 degrees N by 76 degrees W
    Posts
    5,097
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    Quote Originally Posted by ndeverest View Post
    Hi,

    I am about to accept a bid on the following Infinity system for a 3500 square foot two story home in Nebraska, which also has a finished basement. Here is the equipment:

    Carrier 24ANB748A003 Infinity 17 compressor
    Carrier 59MN7A Infinity high-efficiency variable-capacity furnace
    Carrier CNPVP6124ALA vertical design N-evaporator coil.
    Carrier Infinity Touch control.

    Here’s my question to all of you... is this a matched system?

    I ask this because the load calc (done with a full manual J) came out to 4 tons, and the compressor is a 4 ton, but when I Google the coil it says it’s a 5 ton coil. My contractor says that this is what is necessary according to AHRI guidelines in order to actually get a cooling load of 4 tons; he said the fact that Carrier calls this a 5 ton coil is not relevant. Is this correct? Any thoughts?

    Thanks!
    the 61 indicates 61k BTU. There is an 48 that is a 4ton coil.

    The correct selection should be based on the sensible latent capacity of your home, not just the SEER listing.

    Your manual J should show you the sensible capacity and the latent capacity that you structure requires if the correct data was entered.

    A short version guess should not be relied upon.

  4. #4
    Join Date
    Aug 2013
    Location
    Visalia California 93291
    Posts
    7,714
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    Yes it is matched see attachment- But unless you really needed communicating the ACB7 with a 59TP furnace would have been a better bet--Like secondopinion said- You need a proper Man J and Man S and a performnace run on this set up
    Attached Images Attached Images

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