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Thread: Lineset size

  1. #14
    Join Date
    Dec 2005
    Location
    Cincinnati, Oh
    Posts
    4,656
    eh, if you look in the instructions that comes shipped with the unit, it says at 50ft 3 ton you need 1 1/8th.
    "Better tell the sandman to stay away, because we're gonna be workin on this one all night."

    "Dude, you need more than 2 wires to a condenser to run a 2 stage heatpump."

    "Just get it done son."

    Dad adjusted

  2. #15
    Join Date
    Apr 2007
    Posts
    6,285
    Quote Originally Posted by hvacvegas View Post
    eh, if you look in the instructions that comes shipped with the unit, it says at 50ft 3 ton you need 1 1/8th.
    Okay I wasn't trying to argue with that......they also have a long line set guideline where it states capacity loses due to using undersized suction line.

  3. #16
    Join Date
    Apr 2004
    Posts
    7,680
    It's all academic if you leave that coil there. Everything published goes out the door.

  4. #17
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,512
    might go with a 410 a system sometimes they take a smaller suction line

  5. #18
    Join Date
    Jun 2007
    Location
    Central, FL
    Posts
    870

    Did I Miss Something Here!!!

    Quote Originally Posted by salty7c View Post
    I presently have a 12 year old heat pump Rheem 2 1/2 ton compressor outside with Rheem 3 ton air handler inside. When running it had insufficient capacity. The existing lineset is 3/4 and 3/8. It has been recommended that I replace the outside unit with a 3 1/2 ton R22 Amana SEER 13 unit using the existing lineset and later upgrade the inside unit when necessary. Will this work ?
    This sounds very DIY if you ask me, no experiance contractor would do this!
    Has anyone noticed they will install a 13 seer 3.5 ton condenser on a old Rheem 3 Ton coil The only thing this will get you is a damaged compressor,not to mention that if that new system is a HP its almost guaranted to trip that compressor on high pressure in heat mode. This is all wrong I would not recommend its a mess if you ask me!
    WARNING:IF YOU DON'T KNOW THEN DON'T DO, SO THOSE WHO KNOW WHAT YOU DIDN'T KNOW DON'T END UP UNDOING WHAT YOU DID SO IT COULD GET DONE RIGHT!

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