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  1. #1
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,412

    PM on a job we've done 2 systems in 3 years

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  2. #2
    Join Date
    Sep 2008
    Location
    Pittsburgh
    Posts
    197
    nice ..... isent there apposed to be pick up traps when you run it that high? or is it shorter then the pic makes it
    Who the hell put this return in the bathroom.

  3. #3
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,412
    ive always wondered about the traps. i thought u needed traps if the OD unit was above the ID coil. If someone could please guide me in the right direction it would be greatly appreciated. We've done more installs like this and the equipment has lasted 20 years with no compressor problems. so i guess its ok? that is about 25-30' vertical run. my 32' ladder extended to the top of the roof

  4. #4
    Join Date
    Sep 2008
    Location
    Pittsburgh
    Posts
    197
    nvr mind doing some reading onlie and ran across this


    Because R-410A and POE oilmix so well together, oil-trap
    installation is generally not required on R-410A systems.

    http://www.rses.org/assets/r410a/0308_Feature2.pdf

    is that the infinity series? we do the evolution i love this system except the pain in the butt controll
    Who the hell put this return in the bathroom.

  5. #5
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,412
    its a performance 15seer which is compatible with infinity with a fv4cnf003 a/h

  6. #6
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,412
    good find on that article. if only everyone used nitro while brazing and actually flushed out old linesets when retrofitting

  7. #7
    Join Date
    Aug 2009
    Location
    Michigan
    Posts
    88
    Carrier recomends a trap in the suction line if its 20 ft or higher.

  8. #8
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,474
    If anything, run the lines up a bit out of the attic air handler so that during the off cycle, liquid from the coil doesn't flow downhill to the compressor. Trap in the suction line is for condenser above evap.

    I lived in a 3rd floor apartment briefly in the early 80s. When my A/C ( ground) came on, it sounded like a machine gun going off for a few seconds as the old Copeland cleared out the liquid!

  9. #9
    Join Date
    Oct 2003
    Location
    Washington
    Posts
    7,405
    Quote Originally Posted by BaldLoonie View Post
    If anything, run the lines up a bit out of the attic air handler so that during the off cycle, liquid from the coil doesn't flow downhill to the compressor. Trap in the suction line is for condenser above evap.

    I lived in a 3rd floor apartment briefly in the early 80s. When my A/C ( ground) came on, it sounded like a machine gun going off for a few seconds as the old Copeland cleared out the liquid!

    A liquid line solenoid is in order.

  10. #10
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,412
    yes. the tubing is higher then the evap coil then goes down vertical and bends into it

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