Page 2 of 2 FirstFirst 12
Results 14 to 23 of 23
  1. #14
    Join Date
    Oct 2011
    Location
    hayward ca
    Posts
    58
    after the factory charge, and you are still low because of line set, add more till it sweats.

  2. #15
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,400
    Quote Originally Posted by Ansonf View Post
    after the factory charge, and you are still low because of line set, add more till it sweats.
    This is NOT a good charging metric.

    With a 50 degree ambient, the dewpoint will be quite low.

    It may not be possible to get the suction line to sweat.

  3. #16
    Join Date
    Jul 2007
    Location
    New Jersey
    Posts
    3,031
    Quote Originally Posted by jpsmith1cm View Post
    How does that compensate for lineset length?

    With that as an unknown, you cannot simply weigh in and go.
    is there not a formula that calculates extra refrigerant for additional liquid line
    “If I have seen further than others, it is by standing upon the shoulders of giants.” ~ Sir Isaac Newton


    I'm learning all the time, the tombstone will be my diploma!!!


    Did you ever stop to think, and forget to start again?

  4. #17
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,400
    Quote Originally Posted by Tommy1010 View Post
    is there not a formula that calculates extra refrigerant for additional liquid line
    Indeed, there is.


    Of course, this ASSUMES that you can access the lineset to measure it.

  5. #18
    Join Date
    Aug 2008
    Posts
    91
    Quote Originally Posted by jpsmith1cm View Post
    And if you cannot measure the lineset to calculate the required charge, how do you charge it?
    "Touche`" you got me! my "DUH"

  6. #19
    Join Date
    Apr 2007
    Location
    Philadelphia
    Posts
    2,192

    Angry

    Quote Originally Posted by Ansonf View Post
    after the factory charge, and you are still low because of line set, add more till it sweats.
    Wow, Poor customers ...

  7. #20
    Join Date
    Apr 2007
    Location
    Philadelphia
    Posts
    2,192
    Quote Originally Posted by jpsmith1cm View Post
    This is NOT a good charging metric.

    With a 50 degree ambient, the dewpoint will be quite low.

    It may not be possible to get the suction line to sweat.
    Oh it will sweat , When the ice starts forming on it because you have 0 degree superheat and a 28 degree suction line slugging liquid into the compressor

  8. #21
    Join Date
    Oct 2007
    Location
    Southern Indiana
    Posts
    94
    Most commercial units don't come with a factory charge weight stamped on them.
    If your running the unit at 50 degrees it should have some type of low ambient kit or a fan cycling switch, just charge to proper superheat and subcooling.

  9. #22
    Join Date
    Oct 2011
    Location
    hayward ca
    Posts
    58
    or you can build an enclosure around your condensor keep it kosey. insulate line set real good. O r have the owner do that.

  10. #23
    Join Date
    Oct 2011
    Location
    hayward ca
    Posts
    58
    Being i n bay area Ca, I ve not had to deal with 50 degree daytime weather.

Page 2 of 2 FirstFirst 12

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