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  1. #14
    Join Date
    Jul 2011
    Location
    Lehigh Valley, PA
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    490
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    Quote Originally Posted by Capz View Post
    Why does Copeland offer fractional indoor condensing units with or without the receiver?
    Quote Originally Posted by VTP99 View Post
    Most the time I find units with receivers using txv and units without using cap tubes.
    But not on Traulsen. That was the point of my first post.

  2. #15
    Join Date
    Feb 2004
    Location
    Madison, WI
    Posts
    304
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    I think some "receiver" capacity is in the design of the condenser. Or the condenser can hold the entire refrigerant charge. If memory serves I've serviced a few freezers with TXV's and no receiver that still had a liquid valve that allowed you to pump it down for service procedures. The condensers were able to hold the entire system charge. Ditto with A/C units.

  3. #16
    Join Date
    Apr 2010
    Location
    San Diego, CA
    Posts
    231
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    They make refrigerators for a market that is saturated with cheap equipment, built with corner cutting in mind. Refrigerant is expensive, use less and you save money. Even with a receiver they would put in just enough for it to work, so might as well cut the receiver out and save that coin too.

    Just my opinion. Can't imagine that anything other than cost drives the use of critical charge systems with TXVs.

  4. #17
    Join Date
    Oct 2009
    Location
    Raleigh, NC
    Posts
    837
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    There is no need for a receiver in a system where the ambient is controlled and the load doesn't vary much.

    Sent from my ADR6350 using Tapatalk 2

  5. #18
    Join Date
    Jul 2012
    Location
    Western KY
    Posts
    1,221
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    The receiver is not for pump down nessisarily. It's needed when additional flooding charge is required for low ambient operation. If ambient is controlled, as pointed out earlier, the cond coil can hold the entire charge during pump down. A lot of your reach in equipment may not have or need a receiver. Self contained reach in equipment any way. Remotes may need them even if cond is in controlled ambient depending on lineset.

  6. #19
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,229
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    Quote Originally Posted by Capz View Post
    Seeing it on 10' prep tables with dual evaps, two txv's
    They oversize there condenser coils as well.

  7. #20
    Join Date
    Jun 2011
    Location
    wi
    Posts
    14
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    Quote Originally Posted by VTP99 View Post
    Sounds like someone is installing the wrong condensing units.
    The condensing units are factory. From 1984 and still kicking. I have at least eight of these older units configered with recievers and cap tubes.

  8. #21
    Join Date
    Jan 2010
    Posts
    8,195
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    Quote Originally Posted by mike1020 View Post
    The condensing units are factory. From 1984 and still kicking. I have at least eight of these older units configered with recievers and cap tubes.
    I have never seen a factory condensing unit use a receiver with a cap tube system. How about you get us some model numbers and we do some investigating ? Or might you be seeing cap tubes coming from a distributor ?

  9. #22
    Join Date
    Jun 2012
    Location
    Tenn
    Posts
    139
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    Depends on how the TXV sits relative to the condensor, and what the capacity is. Plenty of low charge systems have no reciever. Like someone mentioned earlier, many AC's don't have recievers. As long as there is a good supply of liquid refrigerant consistantly between the TXV and the condenser, it will still function well.

  10. #23
    Join Date
    Aug 2010
    Location
    ABQ, US
    Posts
    1
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    No receiver with a TXV metering device in any refrigeration system means cheap manufacture practice. In order to make one unit what will last longer and in the same time be efficient , best practice is an external equalizer type of TXV and oversized receiver/ accumulator. Then the job improvement will achieve optimal performances for any kind of loads, because of the constant very low SH without flooding the compressor. Also you will be able to make the system working better with high ambient temperatures and low loads without worry for any compressor failures.

    Do not forget, that the manufacture's goal is cheap is possible, and the chances that the technicians who worked with the unit before you has limited knowledge and practices are huge!

    Always think how to improve , not just how to fix.

  11. #24
    Join Date
    Aug 2006
    Posts
    2,946
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    Quote Originally Posted by miloshar View Post
    No receiver with a TXV metering device in any refrigeration system means cheap manufacture practice. In order to make one unit what will last longer and in the same time be efficient , best practice is an external equalizer type of TXV and oversized receiver/ accumulator. Then the job improvement will achieve optimal performances for any kind of loads, because of the constant very low SH without flooding the compressor. Also you will be able to make the system working better with high ambient temperatures and low loads without worry for any compressor failures.

    Do not forget, that the manufacture's goal is cheap is possible, and the chances that the technicians who worked with the unit before you has limited knowledge and practices are huge!

    Always think how to improve , not just how to fix.
    It does have a receiver.....082S Ernie Parmell and Jimmy White,only a couple of guys here will get that.
    FEN

  12. #25
    Join Date
    Jun 2014
    Location
    Southlake, Texas, United States
    Posts
    43
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    How is this any different than almost every ice machine? They use a txv and have no receiver? Used on remotes, water Cooled and self contained air cooled?

  13. #26
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    7,825
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    Quote Originally Posted by the mojo View Post
    It does have a receiver.....082S Ernie Parmell and Jimmy White,only a couple of guys here will get that.
    Ernie was one smart dude!
    I only met Jimmy once or twice in the late 80’s, seems like a lifetime ago.

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