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  1. #1
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    Carrier 30HT225 with Prodialog Control- Expansion Valve Part#?

    What is the electronic expansion valve part number for Carrier 30HT225 with Prodialog control?

    This chiller has 2 circuits. Each circuit has 3 ea of 06E299 Compressors.

    The expansion valve is 1500 steps.

    Thank you

  2. #2
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    Hello Wp !

    In standard conditions for the R407c and 1500 tep EXV, the reference is 32 GB 401 064 for each circuit,
    If the machine run in brine conditions,
    -1C / -6c use 32 GB 401 034 and
    -6c / -10c use 32 GB 401 014.

    Good job

    Impeller

  3. #3
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    The 32GB401-064 is now obsolete and superceded with
    32GB402-624-C. Best you contact Carrier Spare Parts as you will need a new cable adaptor as well for the new EXV which is a 4 pin terminal the old EXV. was a 5 pin terminal. The number of steps has changed to a higher number of steps so you will need to reconfigure this as well. Possibly may need a software upgrade.for main board if you do you will need Carrier Service for that. But speak to spares for any help any problems let me know.
    Gibbo

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  5. #4
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    Thread Starter
    Thank you, Impeller and Gibbo.

    This chiller is making -2.5C brine.

    The current expansion part is 32GB402584.

    When 2 compressors are running on a circuit, this 1500 steps expansion valve open 100% and trip High Suction Superheat (>41.6C) after a few hours. This happens on both circuits.

    When 3 compressor are running on a circuit, this expansion valve also open 100% and trip High Suction Superheat (>41.6C) within an hour.

    Sat. Discharge Temp = 47C
    Sat. Suction Temp = -8C

    The parameters at both conditions above are captured and attached.

    1. Is the 32GB402584 under sizing for this unit?
    2. Does this expansion cause High Sat. Discharge Temp and Low Sat. Suction Temp?
    3. Are there any other causes?
    4. Is the 32GB402624 suitable for this unit runinng -2.5C brine application?

    Thank you
    32GB402584.jpg3+3 (03).jpg3+3 (02).jpg3+2 (02).jpg3+2 (01).jpg

  6. #5
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    Quote Originally Posted by w~p View Post
    Thank you, Impeller and Gibbo.

    This chiller is making -2.5C brine.

    The current expansion part is 32GB402584.

    When 2 compressors are running on a circuit, this 1500 steps expansion valve open 100% and trip High Suction Superheat (>41.6C) after a few hours. This happens on both circuits.

    When 3 compressor are running on a circuit, this expansion valve also open 100% and trip High Suction Superheat (>41.6C) within an hour.

    Sat. Discharge Temp = 47C
    Sat. Suction Temp = -8C

    The parameters at both conditions above are captured and attached.

    1. Is the 32GB402584 under sizing for this unit?
    2. Does this expansion cause High Sat. Discharge Temp and Low Sat. Suction Temp?
    3. Are there any other causes?
    4. Is the 32GB402624 suitable for this unit runinng -2.5C brine application?

    Thank you
    32GB402584.jpg3+3 (03).jpg3+3 (02).jpg3+2 (02).jpg3+2 (01).jpg
    .

    The EXV part number for med brine was 32GB401-034C
    this has been Changed to 32GB402-594-C this valve is rated for 75 tons
    EXV part number for Low Brine was 32GB402-014C this has been changed to 32GB402-574C this valve is rated for 50 tons

    Part number 32GB402-584C is rated for 60Tons.
    So this valve looks wrong for your chiller application.

    As its a EXV 2 valve you shouldn't need any of the stuff I previously mentioned as its still a 1500 step valve.

    Hope this helps
    Gibbo

  7. #6
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    Thread Starter
    Quote Originally Posted by Gibbo View Post
    .

    The EXV part number for med brine was 32GB401-034C
    this has been Changed to 32GB402-594-C this valve is rated for 75 tons
    EXV part number for Low Brine was 32GB402-014C this has been changed to 32GB402-574C this valve is rated for 50 tons

    Part number 32GB402-584C is rated for 60Tons.
    So this valve looks wrong for your chiller application.

    As its a EXV 2 valve you shouldn't need any of the stuff I previously mentioned as its still a 1500 step valve.

    Hope this helps
    Gibbo
    Hello Gibbo,

    What if I use 32GB402624 EXV because of current too high suction superheat with 32GB402-584C with 2 compressors running?

    I understand 32GB402624 EXV is for water application.

    Can the prodialog manage to open less steps to control suction superheat at target superheat?

    Thank you

  8. #7
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    The 32GB402-624C is rated for 120 tons which for your application makes it way oversize. The controller would attempt to try to control the superheat but you are likely to experience problems doing so.

    Gibbo

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  10. #8
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    Thread Starter
    Thank you, Gibbo

    What is the size of this EXV part# 32GB401-044?

    How to find the size of the EXV.

    Thank you

  11. #9
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    32GB401-044C is rated at 90 tons it has been superceded by 32GB402-604C.
    Gibbo

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  13. #10
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    I have a factory spare parts catalogue dated 2013 and also. googling the part number. There is a factory spare parts database which shows if the part number has been superceded with a new part number.
    Gibbo

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  15. #11
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    For the French factory spare parts catalogue go to
    www.carrier-ercd.com.
    Gibbo

  16. #12
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    Thread Starter
    Gibbo, Thank you so much for your valuable info.

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