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  1. #1
    Join Date
    Aug 2014
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    36k fujitsu lineset run

    Hello techs , I installed a 36k fujistu split unit , but ran the refrigeration piping about 11ft to outdoor unit , I guess I didnt read the instructions on this install, which is minimum pipe length of 16ft , usually its 10ft for most units which is why I installed piping 11ft & not read manual.I havent start up the unit yet, my question is would i get away with 11ft pipe ran or problem would arise.

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  2. #2
    Join Date
    Aug 2002
    Location
    Southold, NY
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    26,266
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    16’?
    I have to look that up but from every class, if that’s what they want that’s what they get!

  3. #3
    Join Date
    Aug 2014
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    Thread Starter
    Quote Originally Posted by pecmsg View Post
    16’?
    I have to look that up but from every class, if that’s what they want that’s what they get!
    yes 16' minimum is the pipe run for 36k btu units between indoor & outdoor, its 10' minimum for fujitisu 12k -24k btu units according to brochure.I got to comfortable running pipe for smaller size units ,know I have to redue piping & extend few ft., to make 16' ,not sure if I can count the indoor head, suction & liquid lines that already come in few ft. length ,I could be just fine in total length , I just dont want to redue piping if I dont have to ,but would diffently read through everything next time.thanks for looking in.indoor unit M# ASU36RLXB outdoor M#AOU36RLXB,thanks for looking in.


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  4. #4
    Join Date
    Jul 2009
    Location
    Columbia, MD
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    5,874
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    Ive known to be wrong. I believe the minimum 16’ is due to noise from the refrigerant. Not a performance issue.


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  5. #5
    Join Date
    Aug 2014
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    Thread Starter
    Quote Originally Posted by gravity View Post
    Ive known to be wrong. I believe the minimum 16’ is due to noise from the refrigerant. Not a performance issue.


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    just called fujistsu tech support ,they said the minimum pipe ran is for noise, but this unit will be cooling/heating a commercial space so noise wouldn't be a problem for them I dont believe it will make such noise to be a concern ,its usualy a problem if it's for a residential place.thanks for reading my post.

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  6. #6
    Join Date
    Aug 2014
    Posts
    226
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    Thread Starter
    Quote Originally Posted by pecmsg View Post
    16’?
    I have to look that up but from every class, if that’s what they want that’s what they get!
    just called fujistsu tech support ,they said the minimum pipe ran is for noise, but this unit will be cooling/heating a commercial space so noise wouldn't be a problem for them, I dont believe it will make such noise to be a concern ,its usualy a problem if it's for a residential place.thanks for reading my post

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