Page 1 of 2 12 LastLast
Results 1 to 20 of 30

Thread: txv question

  1. #1
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    3,863
    Post Likes

    txv question

    Is this a 22 valve or 410a valve or powerhead dependent? Ran across this mess installed in a Mobile home tonight. Found a bad braze joint from installer on liquid line in. Anyways, they were hot and i fixed the leak, recharged and to my surprise it ran better than expected even though its a 3.5 ton condensor on a 2-3 ton coil. Also, noticed a brand new compressor in it also and told them "well, if it goes out again you know why.
    Attached Images Attached Images    

  2. #2
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    That's a mystery to me... What was sc and sh? Was it really peculiar or basically normal?

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  3. #3
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    3,863
    Post Likes
    Thread Starter
    Quote Originally Posted by JayMan7 View Post
    That's a mystery to me... What was sc and sh? Was it really peculiar or basically normal?

    Sent from my SM-G960U using Tapatalk
    I gave it 10 SC. SH ended up @ 12 with a 45 degree evap temp. My guess is it may start freezing up or close to it tomorrow when the indoor load goes down. I didn't take wet bulb but it was 98 in the house.

  4. #4
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    3,863
    Post Likes
    Thread Starter
    Oh yeah i didn't get pictures. But, these idiots threw that trane cased coil into the coil cavity of a nordyne mobile home furnace. Just left the panels on it as the original coil cover sheet (panel) that comes with the furnace is long gone. But anyways is it 22 or 410a valve is my question.

  5. #5
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    2,982
    Post Likes
    Well it says 410a and the power head is not changeable. That is messed up.

    Sent from the Okie state usin Tapatalk

  6. #6
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    3,863
    Post Likes
    Thread Starter
    Quote Originally Posted by R600a View Post
    Well it says 410a and the power head is not changeable. That is messed up.

    Sent from the Okie state usin Tapatalk
    Look closer it also says r22.

  7. #7
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
    Posts
    2,982
    Post Likes
    Oh wow it says both. With that superheat I would think it must be r22. I always find those era trane units running between 10 and 15 superheat unless there is a problem so it sounds good to me.

    Sent from the Okie state usin Tapatalk

  8. #8
    Join Date
    Jan 2010
    Posts
    19,559
    Post Likes
    It appears to me R22 is marked out ....
    Attached Images Attached Images  

  9. Likes R600a liked this post.
  10. #9
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    3,863
    Post Likes
    Thread Starter
    Quote Originally Posted by VTP99 View Post
    It appears to me R22 is marked out ....
    So the mark out means it's not 22? I told the customer it's a 410a valve. It wasn't until i left and looked at the picture and seen the 22 label that got me thinking, "maybe it is a 22 valve after all". And that's why its running half way decent. Also, i see that i didn't get the full model# of the valve in the pic. Damn!

  11. #10
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    Ok I did not notice that "r22" was marked on the valve. It's r22 then. Those sc and sh numbers are absolutely perfect for a trane coil, and especially perfect given it's a mobile home install. The valve is r22 and the powerhead is not removable.

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  12. #11
    Join Date
    Jan 2010
    Posts
    19,559
    Post Likes
    No equipment manufactured after 2010 was R22.
    Attached Images Attached Images  

  13. #12
    Join Date
    Mar 2013
    Location
    Treasure coast, FL
    Posts
    8,765
    Post Likes
    Quote Originally Posted by VTP99 View Post
    No equipment manufactured after 2010 was R22.
    But you can change the valve and connect it to an older R22 condensing unit

    Sent from my Moto Z (2) using Tapatalk

  14. Likes JayMan7 liked this post.
  15. #13
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    Also I can't make out model and serial on the coil or I would look it up on trane 360 but it's a 2012 and appears to be 410a. It seems the installers ordered that coil and a trane r22 txv. Then they swapped in the r22 txv so it would work with that r22 heat pump. Which is ok to do if you have to. The most important thing is that the txv matches the refrigerant!

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  16. #14
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    Quote Originally Posted by shellkamp View Post
    But you can change the valve and connect it to an older R22 condensing unit

    Sent from my Moto Z (2) using Tapatalk
    You got it! That's exactly what they did!

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  17. #15
    Join Date
    Jan 2010
    Posts
    19,559
    Post Likes
    Quote Originally Posted by shellkamp View Post
    But you can change the valve and connect it to an older R22 condensing unit

    Sent from my Moto Z (2) using Tapatalk
    Yes the valve will work with either refrigerant and the manufacturer will mark which flavor to use.
    In this case R410a was marked because of the manufactured date.
    Last edited by VTP99; 10-01-2020 at 07:40 AM.

  18. #16
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    Quote Originally Posted by VTP99 View Post
    Yes the valve will work with either refrigerant and the manufacturer will mark which flavor to use.
    In this case R410a was marked because of the manufactured date.
    I don't know about that. I don't see how txvs would work for different refrigerants the opening and closing forces are calibrated to the specific refrigerant. Hence the need for different powerheads etc. Do you have documentation from sporlan etc that would prove otherwise? If they were generic then they would be sold that way. To me it looks like they print the txv label at the factory. The label can be put on any txv. Then they stamp which one it is. The r22 is stamped in a green stamp which you can see clearly the "r22" writing. They should use black if they want to mark out the r22. It really looks to me like they are making it clear that it's r22.

    The coil is a 410a coil but the installers ordered a r22 txv and put it in. We do that as well when we need to.

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  19. Likes R600a liked this post.
  20. #17
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    Give me a minute and I'm gonna post some hi res pics I just took.

    They may validate your point @VTP99

    410a is always marked pink but what if the pink wore off... You'll see what I mean by the pics

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  21. #18
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    See green underneath black... OPs pic appears to be that but no pink

    Those are 3 different trane txvs all from 410a coils


    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  22. #19
    Join Date
    Jan 2010
    Posts
    19,559
    Post Likes
    That power element can be changed to pick your poison.
    It's done all the time in refer work.
    Not the case in the second photo.
    Attached Images Attached Images   

  23. #20
    Join Date
    Mar 2018
    Location
    Virginia
    Posts
    1,329
    Post Likes
    Quote Originally Posted by VTP99 View Post
    That power element can be changed to pick your poison.
    It's done all the time in refer work.
    I know but with resi the txv powerheads cannot be changed and the txv cannot be adjusted (except some goodman can be adjusted).

    See the powerheads in pics are basically brazed on.

    @rundawg what do you think about this. You're very good with manufacturer specs and recommendations. Is there any chance an 410a txv can work on r22. Has sporlan ever said anything about using mismatched txvs.

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

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
  •