Page 1 of 2 12 LastLast
Results 1 to 13 of 16
  1. #1
    Join Date
    Jun 2008
    Location
    Arizona
    Posts
    15

    Suction and Discharge Lines in the ground!!

    I serviced a 5 ton split unit that was about 10 years old. The suction line and liquid line out of the house to the condensor runs into the ground and then using three 90 degree fittingsthey lines curl around and connect to the compressor. The air handler is in the attic and is all the way on the other side of the house.

    Why would someone install those lines like that?
    I'm thinking of removing those bends and reconnecting with a gentle bend both those lines.

    Anyone have any thoughts on this subject.

    Thanks

    Sol

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,368
    Need pics.

    Perhaps trying to prevent trip hazzard.
    Thye wanted to keep easy access to teh service panel.
    Contractor locator map

    How-to-apply-for-Professional

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

  3. #3
    Join Date
    Dec 2006
    Location
    Dallas
    Posts
    189
    Do you mean underground?

  4. #4
    Join Date
    Feb 2008
    Location
    Western NC
    Posts
    2,504
    Yes....linesets can run underground..

    Need pics for the rest.
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  5. #5
    Join Date
    May 2004
    Location
    Austin, TX
    Posts
    1,735
    I have a customer that has a 7.5 ton split a/c, and a 4 ton split a/c that
    have the linesets buried for over 114 feet. Units are in the basement.

    Systems have worked very well. The 7.5 ton system is 14 years old, and
    the 4 ton is 20 years old, maybe older. I did just replace the compressor
    in the 4 ton unit, but only because a weld in the compressor leaked out
    the oil.

  6. #6
    Join Date
    Mar 2008
    Location
    mesa arizona
    Posts
    309

    Thumbs up yo

    hey sol whats goin on?? where in az ru located ?? u do commerc. or resident. work??? im in east valley....but do commerc work in phoenix

  7. #7
    Join Date
    Jun 2008
    Location
    Arizona
    Posts
    15
    Work in Phoenix and looking for hvac work , going to school in mornings

  8. #8
    Join Date
    Mar 2008
    Location
    Houston, Texas
    Posts
    352
    I have a customer with the same setup. Both lineset go under a driveway and the building slab the up to the 2nd floor. Because the lines are 7/8" and 3/8" all the way (2 - 5 tons), they run very low suction pressures. This is a light commercial building with plenty of people and servers (heat source). They needs a/c year round and when it's cool outside they freeze up on occassion.

    Minor problems, but to correct it you would have to tear out the driveway and tunnel underneath.

  9. #9
    Join Date
    Mar 2008
    Location
    mesa arizona
    Posts
    309

    Confused yo

    theres plenty of work shorthanded .. go to supplyhouses..u will seee plenty of numbers...i do commercial myself

  10. #10
    Join Date
    Mar 2008
    Location
    mesa arizona
    Posts
    309

    Unhappy yo

    where do u go to school rsi or uti????gateway college

  11. #11
    Join Date
    Jun 2008
    Location
    Arizona
    Posts
    15
    I found out why the lines were buried ! It was to quieten the lines . That's what the home owner told me.

  12. #12
    Join Date
    Jun 2008
    Location
    Arizona
    Posts
    15
    RSI

  13. #13
    Join Date
    Jul 2008
    Posts
    12
    What is the suction pressure?
    What is it at the evaporator? (probably no port there)
    What size suction line and what tonnage system?
    How much superheat?
    If there is a huge pressure drop in the suction line the compressor is working harder.
    Will you increase the net refrigeration effect enough to offset the cost of working on the system?

Page 1 of 2 12 LastLast

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