Split system
Page 1 of 2 12 LastLast
Results 1 to 13 of 19

Thread: Split system

  1. #1
    Join Date
    Sep 2007
    Location
    Maryland
    Posts
    5

    Confused Split system

    I have ran across a few Slit system that when you touch the discharge line it is cold and sweating and sometimes it is also frosting, and then i touch the suction and it is cool: What is up with that? And how come most of them dont come with discharge service ports? Does anybody know how to properly check if these systems are charged correctly?

  2. #2
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,847
    Any unit I've ever worked on had suction & discharge ports. The way to check them, is a trade secret.

  3. #3
    Join Date
    Jan 2008
    Posts
    95
    I think he is talking about a ductless split.

  4. #4
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,847
    Quote Originally Posted by Caveman1234 View Post
    I think he is talking about a ductless split.
    Who knows, with the little bit of info we have.

  5. #5
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,595
    Quote Originally Posted by Caveman1234 View Post
    I think he is talking about a ductless split.
    Since he said no sevice port on the liquid line, I'd have to agree with you.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  6. #6
    Join Date
    Sep 2007
    Location
    Maryland
    Posts
    5
    I am talking about small 1-2 ton split systems, ductless i have worked on many models its not a specific one that's why i am asking. dont post any replies if your gonna be a @ hole about it. (trade secret) whats that all about, you call your self a professional and you've never dealt with these units? Anyway i just want to know if anybody have ever came across these units with the scenarios that i mentioned. Oh and there is no discharge service port, just suction.

  7. #7
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,847
    Quote Originally Posted by ditcha21 View Post
    I am talking about small 1-2 ton split systems, ductless i have worked on many models its not a specific one that's why i am asking. dont post any replies if your gonna be a @ hole about it. (trade secret) whats that all about, you call your self a professional and you've never dealt with these units? Anyway i just want to know if anybody have ever came across these units with the scenarios that i mentioned. Oh and there is no discharge service port, just suction.
    Excuse me then. But it still smells like DIY to me.

  8. #8
    Join Date
    May 2008
    Location
    Clovis/Fresno CA
    Posts
    254
    if you have only a suction port thats enough to check the ref level

  9. #9
    Join Date
    May 2008
    Location
    Clovis/Fresno CA
    Posts
    254
    they have mini h/p is that it?

  10. #10
    Join Date
    May 2008
    Location
    Clovis/Fresno CA
    Posts
    254
    never mind was reading it wrong

  11. #11
    Join Date
    Jan 2003
    Posts
    539
    I'm not a full time tech but I just started up a mini split for a co-worker (we do commercial hvac controls, computer stuff half the time)

    First time I've ever put my gauges on it. Suction pulled down to about 15 psig, then slowly rise to operating pressure of 60. (R22) Is this normal? Only explanation I have is that the metering device starts out closed, then open up.

  12. #12
    Join Date
    Jan 2003
    Posts
    539
    As far as checking the high side... I didn't.

  13. #13
    Join Date
    Mar 2007
    Location
    NW AR
    Posts
    2,478
    The metering device on a mini-split is in the condenser. The small line on the outside of a mini-split is not the discharge line. Its cold because your metering device is upstream from it. All the ones Ive worked on have no high pressure port. Its freaking retarded IMO. I usually braze a saddle tap onto the outlet of the condenser, inside the condenser housing if I need to.

Page 1 of 2 12 LastLast

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