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  1. Replies
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    181

    Low pressure is reverse operation and need to be...

    Low pressure is reverse operation and need to be open to show as good?
    NC contact might be for alarm
  2. Replies
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    339

    Is the VCCX2 bacnet ready or you still need a...

    Is the VCCX2 bacnet ready or you still need a fieldserver control in between.

    In the older style board a external comm board was needed
  3. Hi Augusto, Is it a 30hr chiller. Old...

    Hi Augusto,

    Is it a 30hr chiller.
    Old mechanical recip type chiller?
    In the manual the B stand for r134a

    You can find it by googling carrier 30hr.
    If you have access to a cell phone with...
  4. Replies
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    566

    Reclaim refrigerant that as migrated to the roof...

    Reclaim refrigerant that as migrated to the roof on a cold day?
  5. Thread: Not Sure Why

    by patpinet
    Replies
    9
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    1,133

    Sure enough that for a heat pump. The guy didn't...

    Sure enough that for a heat pump. The guy didn't have biflow dryer so he decided to put in two standard dryer and just flipped one with the arrow pointing at the condensor
  6. Replies
    18
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    851

    Water temp will let's us see if he as some high...

    Water temp will let's us see if he as some high load on the evap (he got a high Suct sat temp)
    With high TD we could see if flow is good or not.

    Partial number lead only to partial or wrong...
  7. Replies
    18
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    851

    Google is telling me that 38ak is a split...

    Google is telling me that 38ak is a split condensor. Not a chiller
    Is Google right? Just trying to figure out on what your working.
    How long of pipe do you have to the condensor.
    What is water...
  8. Replies
    8
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    466

    Not yet this is only a small part of a bigger...

    Not yet this is only a small part of a bigger project.
    Should be done in May.
  9. One thing that I see Is the fan coil closest to...

    One thing that I see Is the fan coil closest to the supply is the last on the return. It make sense to "balance" the flow at each coil

    Why have they went so high with the return I don't know.
  10. Replies
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    466

    Thanks

    Thanks
  11. Replies
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    466

    Open upc was factory installed. We want to do a...

    Open upc was factory installed.
    We want to do a integration from what I heard there is a automapping feature that grab 50 point.
    Is that right
  12. Replies
    8
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    466

    So now I have a carrier network tool

    We need to integrate a 30hx chiller thru bacnet thru a open upc module.Looking at some older post I see there's a automapping feature that need to be disabled.And I manually enable the point I want ...
  13. Replies
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    1,123

    Have any of you tested win 10 with all those...

    Have any of you tested win 10 with all those software from the manufacturer that make our life easier.
    Like trane techview.
    Vfd software
    Turbocor software
    Any other software you can think off....
  14. Thread: YORK YT

    by patpinet
    Replies
    10
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    876

    You got mail

    You got mail
  15. Replies
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    583

    Get some pressure reading with gage and some...

    Get some pressure reading with gage and some temperature.
    It will help you and those who want to help you out.
  16. Replies
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    690

    As a rule of thumb you look for 2 to 2.4 gpm per...

    As a rule of thumb you look for 2 to 2.4 gpm per ton at the evap.

    Around 3 gpm per ton on the condensor.

    Regardless of the option it's just a standard.

    I did not found your evaporator code...
  17. Replies
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    1,650

    Why don't you go with a vfd. Easier for you,...

    Why don't you go with a vfd. Easier for you, customer might save on energy bill...
  18. Replies
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    555

    You're probably on the right track if the...

    You're probably on the right track if the solenoid was sweating. Check if solenoid reversed. (arrow should point toward txv)
    Check voltage at solenoid it might be a voltage issue.
  19. Replies
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    1,290

    You will need to find what as been programmed in...

    You will need to find what as been programmed in the control board.
    You either will need a tool to connect to the board or see if you have a interface on site
    Btw you won't be able to connect if...
  20. Replies
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    1,290

    What brand or type of controls been installed...

    What brand or type of controls been installed into the aaon unit.( mcs, Wattmaster or other)?

    Seem like a commissioning issue.
    System where started to fast without a good adjustment.
    You can...
  21. Replies
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    1,622

    👍

    👍
  22. Replies
    14
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    1,622

    👍

    👍
  23. It's been close to 15 to 20 years that I haven't...

    It's been close to 15 to 20 years that I haven't seen a Carlin burner.
    Are you starting a collection of older oil burner? For a museum?
    :)
  24. Replies
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    805

    A picture will tell us more.

    A picture will tell us more.
  25. Thread: YK vsd issue

    by patpinet
    Replies
    14
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    1,849

    Check your mail

    Check your mail
  26. Replies
    13
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    1,154

    Humidity in the air. Dry bulbs don't tell the...

    Humidity in the air.
    Dry bulbs don't tell the whole story.
    You need total enthalpy. So dry bulb and relative humidity.
  27. If you take a look at the manual you will se the...

    If you take a look at the manual you will se the complete procedure to test the transducer or go further if transducer is OK.
    Remove transducer from service fitting and validate that you have close...
  28. I believe I won't make that much of a difference....

    I believe I won't make that much of a difference.
    You need thicker armaflex when temperature difference between ambiant and line temp is high.
    Low temp refrigeration applications might be a good...
  29. Thread: York YCAS

    by patpinet
    Replies
    4
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    553

    Your question is not a so easy question. What is...

    Your question is not a so easy question.
    What is the temp you're planning for at evap?

    The hard to predict condition will be outside temp.
    The problem that I see for now is if evap temp to high...
  30. Replies
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    4,886

    Thanks

    Thanks
  31. If you have multiple Evac with no common duct....

    If you have multiple Evac with no common duct.
    Maybe going with a heat recovery chiller and water coil(or glycol)
    Hard to say but it's a possibility that I think might work.
    All depend on...
  32. Thread: Carrier 19XRV

    by patpinet
    Replies
    2
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    566

    Transfer it. Just I case you need it bring some...

    Transfer it.
    Just I case you need it bring some recovery tanks . You get the best of both and get to have a answer to your question as a bonus 😁
  33. 👍

    👍
  34. Heat pump vs boiler simple thing out of my mind...

    Heat pump vs boiler simple thing out of my mind COP.
    You get more energy per KW on a heat pump.
    Did I get your question right or I'm off track
  35. Replies
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    1,999

    If you run a system with too low head pressure...

    If you run a system with too low head pressure this will affect your low pressure (it will drop) as low pressure drop saturated temp will drop.
    If it's a rooftop ice will form, restrict air flow and...
  36. No easy answer. Depend on how busy your local...

    No easy answer.
    Depend on how busy your local trane office is.
    Mine as started to try to sell R'newal after 40000. But I have seen some chiller going for far longer than that.

    BTW I'd be...
  37. Replies
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    2,058

    In the manual

    In the manual
  38. Thread: CGAM cycling

    by patpinet
    Replies
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    1,235

    Not knowing you're specific issue, I'll recommend...

    Not knowing you're specific issue, I'll recommend the following.
    1-make sure flow is as per design. Chart is in the manual (it's in pound per foot) not psi(pound square inch)
    2-Validate signal or...
  39. Thread: CGAM cycling

    by patpinet
    Replies
    13
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    1,235

    Instead of starting and stopping 1 stage it will...

    Instead of starting and stopping 1 stage it will shut the chiller completely?
    Is flow equal on both chiller.
    It sound like there is a issue on 'chiller 1'
  40. Replies
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    403

    Sporlan guide 90-40 talk about how to select a...

    Sporlan guide 90-40 talk about how to select a hgb valve.
    From my understanding in your case your valve should have been selected based on last step of unloading to maintain the load of the last...
  41. Replies
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    403

    Hard to tell without pipe size and even then it...

    Hard to tell without pipe size and even then it will be hard to answer.

    What are you trying to achieve with hgb preventing compressor to stop when there is no load .
    Or do you have a low pressure...
  42. Replies
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    805

    Ill go with 1 gauge per oil type 1 for...

    Ill go with 1 gauge per oil type

    1 for polyoil
    1 for mineral

    You can have as a option
    1 for burnout
    1 for vacuum
  43. If you operate your evaporator at a higher temp ...

    If you operate your evaporator at a higher temp (above design 60 f leaving water instead of 44)
    You use water and chiller was designed for glycol......

    No magic you are just not on with design...
  44. Replies
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    568

    Probably like all retrofit. It's a standard...

    Probably like all retrofit. It's a standard procedure I assume.
    If you switch to polyoil you'll have to replace ALL o-ring on the compressors and the system.
    Remove all the oil you can, from...
  45. Thread: Mcquay

    by patpinet
    Replies
    3
    Views
    562

    Sound good!

    Sound good!
  46. Thread: Mcquay

    by patpinet
    Replies
    3
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    562

    Hi I'm just curious, I know MCS. Is there a...

    Hi

    I'm just curious, I know MCS.
    Is there a advantage to go with MCS rather than the oem?
  47. Aint no bottle of milk there is no expiration...

    Aint no bottle of milk there is no expiration date on a working compressor.

    40000hres is a standard value for bearings,b ut oil and vibration analysis will tell you when its ready for replacement
  48. Replies
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    1,543

    Look to see if isolation have been installed. ...

    Look to see if isolation have been installed.
    Tandem chiller I believe are modular unit.

    Without isolation valve, water will bypass some flow in all module and lower the reading of the...
  49. Replies
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    978

    To have a good idea Please check following if...

    To have a good idea
    Please check following if possible

    Unit model number
    Full comp model number.
    Pressure and Temp @ full load if possible
    Psi drop at both exchanger
    Water in and water out...
  50. Replies
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    978

    We may never know why refrigerant was missing ...

    We may never know why refrigerant was missing :)
    Depending on the quantity ,it may have come undercharged from factory or someone may have pulled gas out because of high pressure alarm.

    What is...
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