MIX / MATCHED CONDENSERS WITH 3rd PARTY COILS


In today’s market, a lot of contractors will use one manufacturer’s condensing unit and another manufacturer’s evaporator coil.  You should check to see if these are a match on the AHRI web site so it does not create a problem later on.

A lot of 13 SEER units today can still use an orifice metering device or a TXV.  The coil manufacturers will usually put in a nominal tonnage orifice in their coil for the size they rate it at.    If you are putting in a “matched” system (ie. 2 ton condenser with a 2 ton coil) the orifice will be properly sized for the condenser/coil match.   However, when you are mix/matching  the condenser and coil (ie. a 2 ton condenser with a 3 ton coil), the orifice needs to be changed to match the size condenser you are installing. In this example the match would require changing the 3 ton orifice that comes in the coil to a 2 ton orifice.  Without the proper orifice, you could over-feed the coil, reduce super-heat, and cause liquid slugging back to the compressor (and compressors do not like liquid).

My personal preference, when mix/matching a condenser and coil is to use a TXV for better refrigerant and capacity control.  Keep in mind, that if you do use a TXV, don’t forget to add a start assist kit to the condenser or you may have nuisance lock-outs or breakers tripping..

We are a York distributor but we also sell ADP coils. This posting came about from questions we have received on this very subject.  For our mix/match combination, we put together the attached sheet to show which ADP orifice or TXV should be used for specific tonnages. Keep in mind that you also have to match the refrigerant type along with the tonnage to select the correct orifice or TXV. Hope this helps anyone using ADP coils.

For other brand after-market coil manufacturers, you can check what orifices they use so you have the proper orifice for your application.

MIX MATCHED Condensers with ADP coils

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About yorkcentraltechtalk

I have been in the HVAC industry most of my life. I worked 25 years for contractors on anything from residential to large commercial boilers and power burners. For the past 23+ years I had been employed by York International UPG Division ( a division of Johnson Controls) as a Technical support/Service Manager but I am now retired. One of my goals has always been to "educate" dealers and contractors. The reason for starting this blog was to share some knowledge, thoughts, ideas, etc with anyone who takes the time to read it. The contents of this blog are my own opinions, thoughts, experiences and should not be construed as those of Johnson Controls York UPG in any way. I hope you find this a help. I always welcome comments and suggestions for postings and will do my best to address any thoughts, questions, or topics you may want to hear about. Thanks for taking the time to read my postings! Mike Bishop
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11 Responses to MIX / MATCHED CONDENSERS WITH 3rd PARTY COILS

  1. Rose says:

    Can u help me? I am trying to find out information about a York unit GCGD24S41S3EA. Can u tell me anything ?

  2. I read your blog.. its amazing. you having very good content. very helpful to all.
    Evaporator Manufacturers

  3. aaron says:

    Wondering why the installer used an ADP coil instead of a York coil.

    I recently had a whole York A/C system installed with a 95% furnace, a 4 ton A Coil and a 3.5 ton 13 SEER Condenser. Just found out that the coil is ADP but not York.

    Any ideas? Thanks!

  4. Kevin says:

    I’m looking for uncased evaporator coils that are compatible with the York Affinity CZF04813C A/C condensor. Preferably something I can order on-line. Can you help?

    • If you are a contractor/dealer:
      go to http://www.york.com and click on the York Contractor Resource. It will take you to a new page, and in the upper right hand corner will be the Distributor Locator. put in your zip code and it will show you your nearest distributor where you can get the UC48 coil

  5. Tim says:

    I have a York 2 ton compressor with heat pump. It has a TXV in it. I have a 3 ton coil witch also has a TXV. Can this set up be used? Both are built in and can’t be removed. Please tell me it can bc i got the outside unit for free.

    • If you are using the outside unit as a heat pump, you will need to check your local distributor if the coil is compatible with the unit. Of you are just using the outdoor unit as an air conditioner, the cool will probably work

      • Tim says:

        I wouldn’t be using the heat pump. My main concern is that both have the TXV. Would it regulate like it’s supposed to or would they fight each other to do so? Is the TXV only for heat pump on the compressor side?

      • The txv in the outside unit is only used in the heating mode. If you do not energize the heat pump heat, that txv is not used.

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