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  1. #14
    Join Date
    Apr 2012
    Quote Originally Posted by mspanky View Post
    I stand by my statement if the suction is sloped towards the compressor in the slightest amount. If anyone has any specific situations where this is not true, lets hear them. (I haven't seen every type of install possible, obviously.)
    I concure
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  2. #15
    Join Date
    Feb 2007
    Believe it or not Trane Application Guide SS-APG001-EN says "to slope 1/4" to 1" per 10 feet of run toward the evaporator"

    We were installing some 80 ton splits about 15 years ago when i got this. I took issue with it and called engineering, they said yep if you install our equipment that is the way we want it done.

    There is a lot of other good stuff in there too, about P traps and such.

    Remember this is for their system

  3. #16
    Join Date
    Sep 2011
    Plainfield IL
    Slope in pipes towards compressor is so important for oil return. I had an opportunity to repipe a 10,000 sq ft freezer that was not properly sloped. Before the job we constantly had oil problems and endless compressor failures. Afterwards never lost one compressor! It was an older system using Carlyle 5F40 compressors. It took some time to convince the customer it was a major issue with his system. Now he is my best customer and sends me tons of referrals.

  4. #17
    C:\Users\morsi_000\AppData\Local\Packages\microsof t.windowscommunicationsapps_8wekyb3d8bbwe\LocalSta te\LiveComm\b041c7cb911ec3cd\120712-0049\Att\20003a0f\WP_20140329_003.jpg

  5. #18
    How does this one grad everyone?..... got a call for a burned up Copeland compressor. At least a full bubble off from the unit towards the riser. Lasted less than 1 year
    Attached Images Attached Images  

  6. #19
    Join Date
    Mar 2013
    swan valley idaho
    That's a really neat pipe support and condenser mounts. Never understood how someone could install a 2500 dollar condenser and not read the manual? The heatcraft manual is awesome and shows how to install with drawings even. I bet there is no p trap at the evap either? Could have brought the lines up 2 feet higher and they would have sloped to compressor. That would require about 10 more scrap block supports though......

  7. #20
    actually is a P trap down below.....I bet its filled with 46oz of oil though. I should have taken pictures of the other 3 units piping. One is about a chest high loop that has no support, 30 ft horizontal run just poked into the side of the condensing unit.

  8. #21
    Join Date
    Oct 2009
    Raleigh, NC
    What is wrong with this piping? I don't see anything that would cause any oil return issues with that tiny little system.

  9. #22
    Join Date
    Jan 2007
    Stongsville Oh
    Double suction risers with single circuit compressor unloaders would require inverted trap. Would also require other pipe sizing requirements also.
    I didn't write the book I just read it!

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