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  1. Replies
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    Was your JCI stat linked and talked back to the...

    Was your JCI stat linked and talked back to the Metasys BMS?

    Thank you very much!
    Bob
  2. Replies
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    704

    Curious which model did you use within the BAPI?...

    Curious which model did you use within the BAPI?
    Thx,
    Bob
  3. Replies
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    704

    Thank you I hear ACI is good; but I heard BAPI...

    Thank you I hear ACI is good; but I heard BAPI may be more rugged Looking to get the best reliable product

    Sinerely,
    Bob
  4. Replies
    9
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    704

    Critical Lab Room with Temperature Sensor

    Dear Sir/Madam:
    I have an existing JCI Temperature Sensor (NS-BHR7100 Series) 0 to 10v with Warm/Cool adjust that talks to BACnet/MSTP. This is a critical lab unit and is the only room where we...
  5. Replies
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    500

    Thank you. Since it is a common coil? If the...

    Thank you. Since it is a common coil? If the other stage is on, it should be able to call for the hot gas bypass if needed.

    Frank
  6. Replies
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    NAE Controller Bus Index

    Dear Gentlemen,
    What can be the result of adding more equipment onto an already unhealthy bus index of a 57 plus?

    Thank you,
    Frank
  7. Replies
    7
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    500

    It is an air cooled condensing unit with two...

    It is an air cooled condensing unit with two separate refrigerant circuits and only one circuit has a hot gas bypass. My question is that standard? My concern one circuit can get a false load but...
  8. Replies
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    500

    Low suction temp and the bank does not have a hot...

    Low suction temp and the bank does not have a hot gas bypass.

    Frank
  9. Replies
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    500

    YORK ACC unit M#YLUA0078

    Gentlemen,
    There are two circuits; should there be a designated hot gas bypass on each ref circuit?

    Thank you
    Frank
  10. York

    York Air cool condensing unit-insulation-wiring -- Sorry should of wrote this in the description.

    Gents
    1-The refer lines on an outdoor unit is missing near the compressor on the high side? ...
  11. Thank you very much! Frank

    Thank you very much!
    Frank
  12. This is a RT chiller or what forum do your...

    This is a RT chiller or what forum do your recommend?

    Respectfully,
    Frank
  13. York Air cool condensing unit-insulation-wiring

    Gents
    What refer lines should not be insulated on outdoor unit. Also control wiring, that is exposed and recommendations due to oa temp during winter, should they be taped etc. I see that some are...
  14. Replies
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    243

    YORK ACC unit M#YLUA0078

    Gentlemen,
    Should there be a designated hot gas bypass on each circuit, due to I only see one, and we have two?

    Thank you
    Frank
  15. Thank you for the advice. Frank

    Thank you for the advice.

    Frank
  16. Replies
    4
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    393

    Also, if the errors are from trying to write to a...

    Also, if the errors are from trying to write to a read only attribute; can that cause any problems?

    Regards,
    Frank.
  17. Replies
    4
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    393

    Thank you very much; Could you explain more...

    Thank you very much;

    Could you explain more why it would try to write to a read only attribute?
    Regards,
    Frank
  18. Replies
    4
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    393

    Metasys BACnet Errors?

    Dear Gents,
    You guys have been a lifesave, and there are such knowledgeable engineers on our forum. That I hold the utmost respect and thank you for all your help.

    Under the Supervisory...
  19. York MaxE Centrifugal Chiller-VSD logic board Question

    Gents,
    Recently had to replace a VSD logic board on the above mentioned centrifugal chillers;
    Two issues:
    1) After replacement of VSD board when the chiller trips due to power surge etc, could...
  20. Replies
    4
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    366

    Got it. But there is an object count for the FEC...

    Got it. But there is an object count for the FEC side; found out more info. Too bad it wasn't broken down in the product bulletin, it would of made life a little easier.

    Regards,
    Frank
  21. Thread: RTU 100% OA

    by HVAC87
    Replies
    5
    Views
    560

    RTU 100% OA

    Dear Gents,
    Have a new Trane-roof top unit with 100% outside air. Has a cold deck and hot deck. Every time the heating valve opens to maintain 90F hot deck set point; it is affecting my cold deck...
  22. Replies
    0
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    208

    Bus Analysis Progress-Metasys

    Gents,
    Is anyone familiar with the Bus analysis progress if that is done manually or automatically. I can view the bus health index.

    Also is there anything under diagnostic that I should be...
  23. Replies
    4
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    366

    I have to give the right data to our HVAC tech,...

    I have to give the right data to our HVAC tech, and with the NCE it can be a little confusing; thought that to get some clarification from this knowledgeable forum.

    Sincerely,
    Frank
  24. Replies
    4
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    366

    NCE - Clarification

    Gents:
    Lets see who knows the answer to this one; we seem to have some discrepancies in my office about this question.

    NCE25 has a recommended maximum object count amount of 2500. Since the NCE...
  25. Thread: NCE Question

    by HVAC87
    Replies
    23
    Views
    1,138

    Entire system to NCE both processors? Frank

    Entire system to NCE both processors?
    Frank
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