Results 1 to 6 of 6
  1. #1
    Join Date
    Oct 2010
    Posts
    118

    YCAS Subcooler pressure

    Got a unit i'm working on unit running ok but was wondering what a normal suction pressure/temp should be on the suction line going into the commpressor from the subcooler whe it is on line.Thanks for your k-noledge

  2. #2
    Join Date
    Dec 2009
    Location
    Fort Worth, Texas
    Posts
    151
    set the econ tev to 12 degrees superheat.

  3. #3
    Join Date
    May 2011
    Location
    North FL.
    Posts
    202
    I could be wrong, but I think you are supposed to see another 20 to 25 degrees farther subcooling thru the Plate heat exchanger.

  4. #4
    Join Date
    Oct 2010
    Posts
    118
    Quote Originally Posted by henpeck View Post
    I could be wrong, but I think you are supposed to see another 20 to 25 degrees farther subcooling thru the Plate heat exchanger.
    I know that but where the gas connection into the comp. connects is it at an intermediate point in the compression stage and is it normally higher than the suction gas pressure from the cooler?

  5. #5
    Join Date
    May 2011
    Location
    North FL.
    Posts
    202
    So many variables come into play as for as just getting a pressure. I really couldn't tell you what that pressure normal runs come paired to true comp suction pressure. Sorry, I normally just wanted the subcooling and making sure that I had my superheat on the Econ. I'll have to see if I can find anything on it.

  6. #6
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,609
    What henpeck is saying is correct - the subcooler saturated temp goes up and down dramatically as the condenser actual temps vary. To look for a constant pressure, as in R-22 is 68.5 psig at 40 degrees saturated on an a/c evaporator (which is a normal baseline for a/c systems, but it's still not a constant), is asking for a constant world, which is non-existent. Pressure is not what you're shooting for - superheat is your target. I've checked quite a few, and if my readings are correct, the input is at an intermediate point, not at true suction.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event