Results 1 to 7 of 7
  1. #1
    Join Date
    Aug 2013
    Location
    N/A
    Posts
    186
    Post Likes

    3 port scroll compressor?

    I saw one of these on a Carrier RTU the other day, and I'm a tad baffled.
    A digital compressor(from what little I've seen of them) have a solenoid, off the discharge, so...whats the purpose of the 3rd port, other than to mess with my head?!
    TIA

  2. #2
    Join Date
    Sep 2007
    Location
    edmonds wa
    Posts
    2,411
    Post Likes
    Is the port down low maybe a oil equalizer? got pics?
    UA Local 32

  3. #3
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    20,980
    Post Likes
    Quote Originally Posted by buford View Post
    Is the port down low maybe a oil equalizer? got pics?
    Good question.

    It it near an oil sight glass?
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  4. #4
    Join Date
    Oct 2012
    Posts
    5,144
    Post Likes
    If it's a smaller digital there is suction, discharge, and then the line for the solenoid tees into the discharge and goes back into the top of the compressor.

  5. #5
    Join Date
    Aug 2013
    Location
    N/A
    Posts
    186
    Post Likes
    All 3 ports are on the side of the comp.. This is the newer style Carriers, with a V shaped condensor, like the Lennox LGA style, and a Comfort-Link controller.
    There is a discharge on the upper half(not the top), then a another line in the middle, then the suction on the lower half.
    Sorry no pics.

  6. #6
    Join Date
    Sep 2012
    Location
    Central Florida
    Posts
    978
    Post Likes
    sounds like vapor injection.


  7. #7
    Join Date
    Jan 2008
    Location
    Phoenix Arizona
    Posts
    926
    Post Likes
    Economized gas port???

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
Quality Home Comfort Awards