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  1. Replies
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    I would tend to disagree on water cooled...

    I would tend to disagree on water cooled chillers, at least the newer ones. A 1250 ton Trane centrifugal chiller ( maybe others too) can easily produce well over 1250 tons if piping, CW temp and...
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    I'm going back to retrofit another unit at this...

    I'm going back to retrofit another unit at this facility later this week. I will take more temps and pressures in existing. So far they say that the performance is very good. Ill update after
  3. Replies
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    Not yet, but I will call them if I don't find a...

    Not yet, but I will call them if I don't find a good resolution.
  4. Replies
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    They do recommend it.

    They do recommend it.
  5. Replies
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    I agree, but at the same time I wanted to try...

    I agree, but at the same time I wanted to try some and they were begging me to find something less expensive. I always label my systems when converted.
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    Thank you for a post with actual first hand...

    Thank you for a post with actual first hand experience. I just wanted to hear from someone that has used it and seen it work.
  7. Replies
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    I won't, I can't expect you to understand all...

    I won't, I can't expect you to understand all that's going on here.
  8. Replies
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    Agreed, but this facility will be used for only...

    Agreed, but this facility will be used for only about 2-5 more years before being torn down.
  9. Replies
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    Again, I am just looking for experience with...

    Again, I am just looking for experience with NU22B. Not opinions.
  10. Replies
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    Thanks for that genius of an idea, I never...

    Thanks for that genius of an idea, I never thought would have thought that a system designed for R22 should have R22 put in it! What was I thinking! Does that mean I should pull out the 1300 lbs of...
  11. Replies
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    But the R22 circuit has no problem with high...

    But the R22 circuit has no problem with high superheat, only the NU22B
  12. Replies
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    Thanks for your comments but I'm looking for...

    Thanks for your comments but I'm looking for answers. 20% reduced capacity has nothing to do with my high superheat. Has anyone used this stuff?
  13. Replies
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    It seems like the evaperator coil is starved. ???

    It seems like the evaperator coil is starved. ???
  14. Replies
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    I am using the NU22b chart

    I am using the NU22b chart
  15. Replies
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    High superheat with NU22B

    I changed out one 6 ton circuit on a 2 circuit 12 ton RTU and converted a 5 ton split system both to NU22B. The building owner wants something less expensive than R22 to use when we find units with...
  16. Good job! Good to know

    Good job! Good to know
  17. I didn't have time Friday, worked 15 hours. Our...

    I didn't have time Friday, worked 15 hours. Our system does not have Internet access so its hard to email reports.
  18. That's a lot of scanning. We are changing them...

    That's a lot of scanning. We are changing them out one by one as they show their ugly faces. I have no idea if there would be a fix in there or not. I appreciate the offer but hate for you to do that...
  19. Yes to system profile and sure, you want it...

    Yes to system profile and sure, you want it emailed?
  20. If you are controlling through comm it sure can....

    If you are controlling through comm it sure can. Otherwise no.
  21. Yes I have tried that

    Yes I have tried that
  22. Old Landis and Gyr TEC air flow problems application 33

    We have hundreds if not thousands of TEC's in our facility. I have been running into a problem more so on the older L&G TEC with application 33. The newer Siemens TEC 2033 don't seem to have this...
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    What is a drsa? I'm not sure. I can't see...

    What is a drsa? I'm not sure. I can't see Ritchie engineering putting their name in it without them making it.
  24. Replies
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    I have a Testo and Yellow Jacket system...

    I have a Testo and Yellow Jacket system analyzers, have you compared this to either of these? I paid about $800 for YJ and $650 for Testo. I like the dize of Testo but the Yellow Jacket has more...
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    I used to carry one of three different ones, now...

    I used to carry one of three different ones, now no fire arms are allowed in the place I work so it has to stay in the truck. I was more inclined to have it on my for some of these sick dogs people...
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    I'll look but I doubt it, how old?

    I'll look but I doubt it, how old?
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    If time and money permitted I would put my yellow...

    If time and money permitted I would put my yellow jacket analyzer on it and chart it. You would then be able to have a recordable chart it high and low pressure.
  28. I have seen where someone accidentally hits a low...

    I have seen where someone accidentally hits a low voltage wire on a high voltage something (24volt wire hits a 277 volt leg) and instantly everything on that 24 volt circuit (safety or control) will...
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    What is high pressure cut out pressure set at?

    What is high pressure cut out pressure set at?
  30. Thread: Which Testo...

    by Jbart
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    I have a Testo and a Yellow Jacket system...

    I have a Testo and a Yellow Jacket system analyzers. The Yellow Jacket way out performs the Testo but it is way bigger. Testo not bad, just not as many features
  31. Replies
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    Are you referring to line 0107 or 0109 when you...

    Are you referring to line
    0107 or 0109 when you compare voltage with a Fluke 87 with the filter on?
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    Are the parameters the same?

    Are the parameters the same?
  33. Replies
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    Exactly

    Exactly
  34. Replies
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    Appion is #1. Yellow jacket super evac is #2. I...

    Appion is #1. Yellow jacket super evac is #2. I have not tried them all but these are great.
  35. I am very aware of code. I have two master...

    I am very aware of code. I have two master electrician licenses and a mechanical contracting license. I am not talking about some Jerry rigged thing. The one I currently have is not violating any...
  36. We have lots of problems with DP or air flow...

    We have lots of problems with DP or air flow switches on our return fans that usually run at minimum. But at the same time the CT can show it running with belts off. The ABB VFD's have a built in...
  37. You are right and I am wrong. I was sure I read...

    You are right and I am wrong. I was sure I read that it used R410a. Hmmm back to the drawing board.
  38. Yes I have thought through all of this in depth...

    Yes I have thought through all of this in depth and researched it. I guess I like the idea of the remote heatpump so it will not blow cold air in my garage. It's nice in the summer but not in the...
  39. The GE hybrid WH I currently have does a great...

    The GE hybrid WH I currently have does a great job even with electric locked out to keep water at 130. It runs 410a but it just does not recover fast enough.
  40. I didn't explain the condenser correctly, I would...

    I didn't explain the condenser correctly, I would make it a heat pump.
  41. Ever made a dedicated water heater with a condenser outside?

    I live in TX and have a GE hybrid water heater. It has significantly reduced my electric bills. The problem is, especially during the cooler months that it won't keep up unless it uses the electric...
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    I have that kind of set up in my house, it works...

    I have that kind of set up in my house, it works very well but remember that dehumidification on demand can raise your electric bill if you use it a lot vs just letting the low speed run longer and...
  43. Thread: Ice machine

    by Jbart
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    Sorry guys l, I can't get the Picture to load...

    Sorry guys l, I can't get the
    Picture to load from my phone
  44. Thread: Ice machine

    by Jbart
    Replies
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    1,749

    Ice machine

    Maintenance man says,"probably haven't been cleaned right in 5-10 years"

    Not sure if I'm getting the picture in here. This is my first attempt.
  45. Ill try it tomorrow, thanks!

    Ill try it tomorrow, thanks!
  46. Replies
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    What are the DO's connected too, what is going on...

    What are the DO's connected too, what is going on to make you think that?
  47. All connections are tight? Is your FLN T-tapped?...

    All connections are tight? Is your FLN T-tapped? Did you replace an existing or add a new one? Did you change application?
  48. You are correct. It seems that this a feature...

    You are correct. It seems that this a feature that should be there. I was hoping someone knows a back door.
  49. Replies
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    This is the Ask Our Pro's forum, and only Pro...

    This is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary, or ask questions of the OP here.

    You can find the rules for posting and...
  50. I have tried every report in there.

    I have tried every report in there.
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