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  1. Replies
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    Please delet the old account. Thank You.

    Please delete the old account.
  2. Replies
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    390

    Hi Joey, I've lost my privileges to message for...

    Hi Joey, I've lost my privileges to message for some reason. Could you PM an email to contact you?
    Thanks
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    With the heat coil before the cooling coil any...

    With the heat coil before the cooling coil any heat addition will drive the air further from the dewpoint. Not an optimal setup for humidity control. With variable speed air flow you could affect the...
  4. So the reason Siemens recommend no VFD's is that...

    So the reason Siemens recommend no VFD's is that the savings would not justify the upfront costs?

    I concur with Matrix on this matter. A true analysis would need to be custom to the particular...
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    A great introduction for the newbie. The best I...

    A great introduction for the newbie. The best I have seen so far.
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    They should be specified in the design which...

    They should be specified in the design which presumably was done by an engineering firm. But since you have already experienced a significant problem the controls contractor may need to perform...
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    In that case Reaper's suggestion is an absolute...

    In that case Reaper's suggestion is an absolute minimum imo. If there are other configurations which may lead to shut off head then further measures should be considered. Installing a diff temp...
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    I would consider temperature monitoring of the...

    I would consider temperature monitoring of the pump casings if shut off head is a concern. Flow switches are another protection option but require taps and need a time delay. Does this plant have...
  9. Thread: JC Tech Support

    by Ithos
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    1,099

    When I sought advice for FX they directed to my...

    When I sought advice for FX they directed to my local ABCS. They don't like to talk directly to the end user in my experience.
  10. Thread: BacNet Question

    by Ithos
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    2,456

    I apologize. I misread your first post. I thought...

    I apologize. I misread your first post. I thought you had more than one JACE. I can not think of a good solution offhand. The Jace would have to support multiple BACnet networks and I don't think...
  11. Thread: BacNet Question

    by Ithos
    Replies
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    2,456

    I don't think there is a solution that lets the...

    I don't think there is a solution that lets the mstp trunk remain a part of your Bacnet network as long as there are device ID's in conflict. You can disable the Jace as a bacnet router and then...
  12. Thread: VFD Myth or Fact

    by Ithos
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    By running in bypass you reduce the chance that a...

    By running in bypass you reduce the chance that a catastrophic motor failure will damage the drive but those are pretty rare events. Perhaps it makes sense if connected to an unstable grid and you...
  13. Thread: BacNet Question

    by Ithos
    Replies
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    2,456

    I'm pretty sure that the FXVMA's device ID...

    I'm pretty sure that the FXVMA's device ID defaults to the Mac Address. Ran into this issue on a college campus. It was a major oversight by JCI. Should be easy enough to confirm with your sales rep....
  14. Thread: BacNet Question

    by Ithos
    Replies
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    2,456

    Thanks for the info. Don't know of any in the...

    Thanks for the info. Don't know of any in the Southeast. It may be a steep learning curve if they do. Lots of business for the institute.
  15. Thread: BacNet Question

    by Ithos
    Replies
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    2,456

    So does this mean that some of the JCI Branches...

    So does this mean that some of the JCI Branches are starting to install Jace's? Last year my JCI instructor said they were planning on doing that.
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    Making pop corn. This is about to get...

    Making pop corn. This is about to get interesting.




    Hillarious! Wish there was a like button.
  17. Very informative discussion. I found this HP...

    Very informative discussion. I found this HP take on the latest ASHRAE recommendations http://h20000.www2.hp.com/bc/docs/support/SupportManual/c03499263/c03499263.pdf

    After reviewing a few...
  18. Thread: ASI Integration

    by Ithos
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    774

    They are BACports which were connected by...

    They are BACports which were connected by ethernet cable to Jace. The adapters show up as BACnet IP devices. The mapped in controllers show up as MSTP/Other devices on a network number you assign...
  19. Highly recommend this book....

    Highly recommend this book. http://www.amazon.com/Building-Automation-Integration-Open-Protocols/dp/0826920128
    Written for the NJATC (IBEW apprenticeship program) and Cisco Networking guide....
  20. Thanks MT. It's always best to refer to a...

    Thanks MT. It's always best to refer to a psychrometric chart. I should have been more precise. There is a good section in the Honeywell Manual too.
    From 3-4(Sensible Heat) the humidity ratio is...
  21. Thread: ASI Integration

    by Ithos
    Replies
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    774

    Thanks Joey for your reply. Please excuse my...

    Thanks Joey for your reply. Please excuse my ignorance about OPC but does the Jace require an OPC client driver? I found literature on one but it said it had to be windows based. I presume that the...
  22. Obviously you need to keep the temps low to keep...

    Obviously you need to keep the temps low to keep equipment from overheating but sometimes this results in very high RH depending on ambient conditions. HVAC should also have a humidifier.
  23. "it drys the air out". How many times have i...

    "it drys the air out". How many times have i heard that? syk said it well. Relative Humidity is lowered but that is because it is a ratio.Recommended Computer Room Humidity.

    From a good source......
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    When the customer freaks out after seeing their...

    When the customer freaks out after seeing their electricity bill spike due to electric heating in summer, you know you have the deadband too small. IMO it is a case by case scenario. If you have...
  25. Thread: ASI Integration

    by Ithos
    Replies
    8
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    774

    Are there any good options for Jace integration...

    Are there any good options for Jace integration without using ASI devices like the BACPort?
  26. Thread: ASI Integration

    by Ithos
    Replies
    8
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    774

    Usually there is a licensed copy of Expert on a...

    Usually there is a licensed copy of Expert on a laptop the installers leave behind. This makes life much easier especially if you want to use an ASI driver Tridium. If there is you will have an mdb...
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    They make some very good training discs that...

    They make some very good training discs that someone at your company should have or can obtain. The ones I have were made in 2003 but the fundamentals are still the same. I borrowed several from...
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    baud rate 1200. See setting the connection...

    baud rate 1200. See setting the connection properties in help. Shouldn't need the other stuff unless you are using hyperterminal. Leave device address at 99
  29. I guess there are not too many Siemens employees...

    I guess there are not too many Siemens employees on hvac-talk as none have responded. Or maybe they just plug in what the engineers tell them too. This topic is more engineering related than hardware...
  30. Replies
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    Unfortunately you can not upload the program even...

    Unfortunately you can not upload the program even if you had the software. The documentation is readily available on the JCI site. FX Lon has created many of headaches for those dealing with it. You...
  31. not 100% but near their peak efficiency.

    not 100% but near their peak efficiency.
  32. http://patentscope.wipo.int/search/docservicepdf_p...

    http://patentscope.wipo.int/search/docservicepdf_pct/id00000012868694.pdf?download

    That is the patent. Only serious engineering literature that I could find. I must assume that at reduced loads...
  33. Who's right? Siemens or the chiller manufactures.

    Siemens says that with their patented Demand Flow control system, that variable speed drives are not necessary on chillers, even on Centrifugals.
    ...
  34. Replies
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    Thank you so much! I scoured the net and never...

    Thank you so much! I scoured the net and never could find it. At the risk of seeming pushy, do you know where I can find a copy of BAS-EB-64 Tracer Summit Chiller Plant Control Application Program?
  35. Replies
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    Appreciate it. It seems that it was just a one...

    Appreciate it. It seems that it was just a one time occurrence. These points kept updating even though the fault message would not clear. It is puzzling that a manual reset is necessary to remove...
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    Try adjusting the time constant in the attributes...

    Try adjusting the time constant in the attributes for the inputs. I had to do that once since the delays were causing havoc. These selftuning PIDs aren't really ideal for dynamic systems. Derivative...
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    Appreciate the tip:o:o

    Appreciate the tip:o:o
  38. Trane has put together a good document explaining...

    Trane has put together a good document explaining the fundamentals and the ASHRAE standards. http://www.trane.com/commercial/Uploads/PDF/520/ISS-APG001-EN.pdf
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    sorry, didn't read carefully, This applies to IE...

    sorry, didn't read carefully, This applies to IE not firefox
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    This may not help but Release Note...

    This may not help but
    Release Note (25-Sep-2012)

    The Windows security patch KB2744842, released Sept. 21, 2012, causes
    certain versions of Internet Explorer, including but not limited to IE9...
  41. Keep in mind that KMC assumes that a NO damper...

    Keep in mind that KMC assumes that a NO damper operates with a reset pressure band of 8-13 psig. A NC damper uses a reset pressure band 8-3 psig. Great point hvac69. Hopefully that was how it was...
  42. First you need to determine if the damper fails...

    First you need to determine if the damper fails open or fails close when pressure is removed. Then you should find the operating range of the damper actuator 3-8psig or 8-13 psig(usually 8-13). The...
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    The state tables serve a similar purpose to that...

    The state tables serve a similar purpose to that of a BACnet priority array, 1-16. An input can only be connected to one block at a time as opposed to an output which can be connected to numerous...
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    Code No. LIT-12011149 Issued August 2, 2011...

    Code No. LIT-12011149
    Issued August 2, 2011
    Serial Tunnel and HVAC Pro Due to inconsistent behavior between HV AC Pro and the Serial Tunnel Service, HVAC Pro downloads are not supported. Serial...
  45. Replies
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    902

    Sorry, I forgot. HVAC Pro and GX 9100 are not...

    Sorry, I forgot. HVAC Pro and GX 9100 are not supported. It is mentioned in the Workbench procedure.
  46. Replies
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    Are you asking about N2 Tunneling? I think it...

    Are you asking about N2 Tunneling? I think it requires an upgrade to the license. Here is a good discussion about it... http://hvac-talk.com/vbb/showthread.php?189553-FX-40-n2-tunneling.
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    Good to know how the scheme works. I was a little...

    Good to know how the scheme works. I was a little confused about the significant digit being smaller in value when converted to decimal. I believe that the most significant number refers to the left...
  48. Thread: M-Tools License?

    by Ithos
    Replies
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    497

    His intent was clearly to intimidate. Didn't...

    His intent was clearly to intimidate. Didn't think it was prudent to start a big debate. I realize that most folks buy the CD and that's that but wasn't sure if others had been threatened by Branch...
  49. Thread: M-Tools License?

    by Ithos
    Replies
    4
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    497

    M-Tools License?

    I was told by a JCI Tech that they only sell M-tools software to end users and that he can get a $50,000 dollar reward if he finds any unauthorized programs on anybody's computer. I know that you can...
  50. Trouble downloading application with FX CommProLON

    Working at a school that has about 30 FX07's. I am able to perform just about every function except download application which is greyed out(not executable). I do not believe the problem is because...
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