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  1. #27
    Join Date
    May 2002
    Location
    Houston Texas
    Posts
    6,383
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    Thread Starter
    Quote Originally Posted by littlebobby85 View Post
    Traditionally, the 25-50-25 would be about right - subject to operating conditions. However, these ratios are different today with oversized condensers and undersized compressors - That's how they get the kw/ ton down - efficiency up. The problem is with microchannel condensers. Its a critical charge because there's no room for subcooling. Your capacity to subcool is extremely limited. I've had good success using a receiver when I couldn't get a fin/tube condenser. I hope this add to the discussion in s positive way.

    Sent from my SM-G935T using Tapatalk
    Appreciate your input on microchannel coils. I retired 5 years ago so I have limited exposure to microchannel. From what I have seen not real crazy about them. I do find they take extra time to recover and pull proper vacumn.

  2. #28
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    27,274
    Post Likes
    Te most useful thing I have found about MC coils is that you need a lower subcooling value. If you try for 10, you have too much happy juice in too small a space....
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  3. #29
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    27,274
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    Quote Originally Posted by BBeerme View Post
    Hey Bobby,
    See that guy above, that Poodle Head Mikey guy? Sometimes we call him PHM, other times just Mikey. You gotta really watch out for him. He'll actually make you think about things. Could be a dangerous character. Just sayin'.
    We should all be that dangerous.....
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  4. Likes BBeerme liked this post
  5. #30
    Join Date
    Jan 2004
    Location
    PA
    Posts
    74,057
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    Quote Originally Posted by rcstl View Post
    On the home page, there are directions for AOP (ask our professionals), Professional and able to answer AOP questions. You need to submit your creds, have 15 useful posts and tell one of the moderators they are cute. Scratch the last one, they are narcissistic, don't encourage them! I am now dead meat....

    A few free drinks at the convention also helps.
    Contractor locator map

    How-to-apply-for-Professional

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

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