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Thread: lennox TXV

  1. #1
    Join Date
    Mar 2011
    Posts
    11

    Hmm lennox TXV

    Does anyone here think it is strange that lennox only has four different TXV's.
    Two for ac and two for heat pump. 1-3 & 3.5 - 5

  2. #2
    Join Date
    Feb 2003
    Location
    garland, texas
    Posts
    663
    They have adjustable ones in the catalog also if you prefer.

  3. #3
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,701
    been that way for years, we never had any issues with them.

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    33,888
    Allied is the same way. But ADP calls for 3, H4TXV01, 02, 03

  5. #5
    Join Date
    Feb 2002
    Posts
    516
    I had to adjust the TXV on a new install last week. It was a XP14-036/CBX27UH-036 system. With the correct SC, the SH was in the mid 20's. Did a pump down, removed the bottom cap and opened the adjustment about 1-1/4 turns. Pulled a vacuum and restarted. SH was mid teens where it should be.

  6. #6
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,007
    Quote Originally Posted by Bill Lee View Post
    I had to adjust the TXV on a new install last week. It was a XP14-036/CBX27UH-036 system. With the correct SC, the SH was in the mid 20's. Did a pump down, removed the bottom cap and opened the adjustment about 1-1/4 turns. Pulled a vacuum and restarted. SH was mid teens where it should be.
    You dont have to pull charge or pump down to adjust a TXV.

  7. #7
    Join Date
    Dec 2005
    Location
    Vancouver BC
    Posts
    126
    you do with Lennox's terrible pink txv's with the rounded cap on the bottom. If you take the cap off you lose all the gas because the adjustment takes a hex key but the hole goes through the adjustor plate and the other side is open to refrigerant. Its a terrible design and after the first time I adjusted one only to find that I hadn't adjusted it enough, I've always just replaced the valve with a proper adjustable Sporlan valve when they go out of whack.
    ___________________________________________
    These Are The Good Old Days

  8. #8
    Join Date
    Jul 2005
    Location
    North Central Ontario Canada
    Posts
    624
    Quote Originally Posted by seascott View Post
    you do with Lennox's terrible pink txv's with the rounded cap on the bottom. If you take the cap off you lose all the gas because the adjustment takes a hex key but the hole goes through the adjustor plate and the other side is open to refrigerant. Its a terrible design and after the first time I adjusted one only to find that I hadn't adjusted it enough, I've always just replaced the valve with a proper adjustable Sporlan valve when they go out of whack.
    Bingo!

    Had four that were running high twenties during our last heat freak of 110 degrees plus.

    ...noticed that the last few boxes said China on 'em...

    Hello Sporlan.
    Here's your sign...

  9. #9
    Join Date
    Dec 2005
    Location
    Vancouver BC
    Posts
    126
    Worse still Lennox makes valves that look exactly the same but all that you find when you take off the cap is a spring with an operator cap on it. You can get a replacement from Lennox for less than I have ever paid for any txv and they work fine when you braze them in but for a little more money why not get a valve that you can adjust in the future if need be.
    ___________________________________________
    These Are The Good Old Days

  10. #10
    Join Date
    Jul 2005
    Location
    North Central Ontario Canada
    Posts
    624
    Quote Originally Posted by seascott View Post
    Worse still Lennox makes valves that look exactly the same but all that you find when you take off the cap is a spring with an operator cap on it. You can get a replacement from Lennox for less than I have ever paid for any txv and they work fine when you braze them in but for a little more money why not get a valve that you can adjust in the future if need be.
    It's why I like my Sporlan wrench. I think it's beyond stupid having to pump a system down to adjust a txv.
    Here's your sign...

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