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  1. Replies
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    yes its that simple. just remember that anything...

    yes its that simple. just remember that anything that was communicating to that panel via ethernet/;bacnet
    will now not be able to reach it. which includes the workstation that you set the...
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    876

    try nuclearpowersimulator.com

    try nuclearpowersimulator.com
  3. Replies
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    748

    Easiest would be if the Jace could do Bacnet over...

    Easiest would be if the Jace could do Bacnet over ethernet, but they likely don't have that driver.
    The DSC's can be Bacnet over ethernet or Bacnet IP, you will need to set the ip/sm/gw at the UDP...
  4. Replies
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    9,141

    yea the sqrt extractor, l o l , was likely the...

    yea the sqrt extractor, l o l , was likely the peak for pneum days, suckers were expensive to run tho, like 400 scim. !
  5. Replies
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    10 year old code ...:) simple reset,, AHU2...

    10 year old code ...:) simple reset,,
    AHU2 WARMEST ZN' = Max ('AHU2 SOUTH TEMP', 'AHU2 NORTH TEMP')
    clg_offset = Limit ('AHU2 WARMEST ZN' - ('AHU2 ZN~TEMP SP' - 0.25), - 0.5, 2)
    'AHU2 VFD SPD' =...
  6. Replies
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    522

    Yea thats a built-in feature. Delta has always...

    Yea thats a built-in feature.
    Delta has always had a marriage between the version of Orcaview and the cp firmware, and ultimately the os that it was to be installed on.
    3.2/3.3 came out when xp was...
  7. Replies
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    405

    no, it don't work that way. the udp connections...

    no, it don't work that way.
    the udp connections will work thru the vpn though.
    just laiunch the vpn first.
    lookup wan connect in the help files..
  8. Replies
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    805

    "How are they?" Well with many hundreds running...

    "How are they?"
    Well with many hundreds running for nearly 5 years now, the CB's have been dependable. i don't think we have had one failure, and just a few replace me's (user err). One of my...
  9. Create a pg for a watchdog timer, and a bv in the...

    Create a pg for a watchdog timer, and a bv in the dcu for a fail flag.
    scan the temperature point in the v2 controller, every 10 minutes.
    DoEvery 10m
    If v2temp =oldtemp then
    bvFail=on
    else...
  10. Replies
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    489

    Its basically a memory issue. if static ram gets...

    Its basically a memory issue. if static ram gets below 20kb then you might start to have problems.
    ie. panel download fails cause you dont have enuf scratch space...
    scan rate goes down a bit but...
  11. This is about the user access level, check the UA...

    This is about the user access level, check the UA point for your login,
    you may be able to modify the UA point to get 'access' to the point type there.
    If you cannot modify it then you will need a...
  12. Try logging in with newpanel/setup . No, any of...

    Try logging in with newpanel/setup . No, any of those models have not been available for some years.
  13. Replies
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    5,227

    Have 400+ installed, work great, good tech...

    Have 400+ installed, work great, good tech support, continuing development,
    and has all the bells and whistles i wanted..
  14. Replies
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    3,220

    autocad and excel !

    autocad and excel !
  15. yes, this is the typical vav SOO(sequence of...

    yes, this is the typical vav SOO(sequence of operation) ,use for the last 100 years, calls for delivering constant temp air to all the zones,, all the time
    hehe

    sounds like a vav single zone with...
  16. wireless or wired?

    wireless or wired?
  17. Replies
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    1,277

    Yes thats a typical method that has been used....

    Yes thats a typical method that has been used.
    but 1.5"wc return plenum static seems high to me
    more like 0.5"wc unless there is considerable distance between the fans..

    you control the relief...
  18. Replies
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    2,146

    Energy savings from 10% to 30% are usual from a...

    Energy savings from 10% to 30% are usual from a DDC install. Setpoint control (better Source-Load matching), reduction of simultaneious heating and cooling and scheduling gives you most of the bang,...
  19. Replies
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    901

    i may be able to help you. Drop me an email, in...

    i may be able to help you. Drop me an email, in profile.
  20. Replies
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    2,367

    yep, you need to flag each point you want to have...

    yep, you need to flag each point you want to have visible on the IP network...
    but you need the controller configuration software, Edifice to do so.
    its on the second tab marked setup... :)
    the...
  21. Replies
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    5,227

    If they are older than 2 years than not likely...

    If they are older than 2 years than not likely Bacnet.
    Firmware has to be specifically Bacnet version.. is upgradeable depending on hardware version of course..
    configuration software is doggled...
  22. Replies
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    2,691

    Pick one of the good guys, like Delta or Alerton...

    Pick one of the good guys, like Delta or Alerton or xxxxxxx (can i say that ! :angel:)
    someone with a nice Bacnet OWS front end that you can live with..
    get one of their smallest system controllers...
  23. Replies
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    3,528

    Floating/digital is the poor mans option. Use...

    Floating/digital is the poor mans option.
    Use the Mod/Analog if you can.
    Get the position feedback option too if you can use/see it.

    it often is more of a function of what your connecting it too...
  24. Replies
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    1,459

    so if they did burn the house down.. could they...

    so if they did burn the house down..
    could they sue you for malpractice?
  25. Replies
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    2,137

    I remember using N to pressurize lines while...

    I remember using N to pressurize lines while brazing to prohibit scale and oxidation of the copper during brazing. not sure what moisture has to do with it. Its the O thats corrosive..
    as far as...
  26. I sold Adam and Eve the first Rheem! :hijacked:...

    I sold Adam and Eve the first Rheem!
    :hijacked:
    :cheers:
  27. Replies
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    There are a few settings in the DSC that could be...

    There are a few settings in the DSC that could be impacting things..
    You can set the APDU timeout and retries, mstp max masters, and the type
    of data exchange for each point. Could be something...
  28. Replies
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    The concept is intriguing though. an algorithm...

    The concept is intriguing though.
    an algorithm to adjust the algorithm that adjusts the ,, algorithm.

    adaptive....
    at some point in time, it became apparent that 'normal or constant' control...
  29. Replies
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    1,778

    its all over the net, just search for it. ...

    its all over the net, just search for it.

    Logical Analog Input (LAI)
    Logical Analog Output (LAO)
    Logical Digital Input (LDI)
    Logical Digital Output (LDO)
    Logical Fast/Slow/Stop Latched...
  30. Replies
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    1,669

    Doesn't sound like you missed anything, you...

    Doesn't sound like you missed anything,
    you likely just have a doggle that no do Illustrator.
    321-E early ethenet key..

    i'v got a keychecker progm that might help if you could update your...
  31. so you fixed it. obviously the velocity...

    so you fixed it.

    obviously the velocity controller..
    many of those must have a velociy pressure of some sort to function at all.
    check the vp probe with a mag or water gage, also check the...
  32. Teletrol- GPL & XML line code Cylon- GPL ...

    Teletrol- GPL & XML line code

    Cylon- GPL


    imho, they all should have just stuck with Basic
    its the easiest to understand and has enough flexiblity to do just about anything one would want in...
  33. Replies
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    2,908

    it is all about power eventually it has to be...

    it is all about power

    eventually it has to be a lower cost vav controller and room sensor.
    one would think that someone would have a one wire solution already, power + comm .. i mean we've had...
  34. Replies
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    1,978

    yep, it is about our freedoms. she got it right,...

    yep, it is about our freedoms. she got it right, we are being reamed.
    must of been a subconcious slipup thing..
  35. Whynot.. yes i would agree, all energy efficient...

    Whynot..
    yes i would agree, all energy efficient control strategies use some kind of realtime reset to accomplish increased comfort and energy reduction.

    the original question was



    so...
  36. Replies
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    1,486

    VAV4 V5.1, is the firmware, and was the last...

    VAV4 V5.1, is the firmware, and was the last version made for the proprietary V2 VAV controllers, 1999, was likely an IZ (Intellizone) product which ended in 98-99 when they released the bacnet...
  37. Replies
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    10,056

    A:det: Must be an excellent control system!! lol...

    A:det:
    Must be an excellent control system!! lol
    Was offline,default values..

    B:det:
    Yes, Roof top units. that was/is the entire bulding, and agreed, i try to use
    keys for a piece that is...
  38. I'm not sure either, i do recall some central...

    I'm not sure either,
    i do recall some central plant awhile back.
    they would start up the cooling early depending on what the load looked like it would be that day. it was an undersized system and...
  39. It sounds like he is expecting the optimization...

    It sounds like he is expecting the optimization of equipment start and stop. So if you can get advanced temperature or 'forecast' data you can determin if one may stop the cooling a little earlier...
  40. Replies
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    2,045

    :eek2: It sounds like you are saying the range...

    :eek2:

    It sounds like you are saying the range is off when you calibrate the sensor..
    which may be true, part of calibration would be adjusting the curve..
    even if it is likely sensor placement...
  41. Replies
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    10,056

    flrpln/mouseovr/w/znoffset One of my...

    flrpln/mouseovr/w/znoffset


    One of my favorites i think,

    Mouseover highligts the Zone 'area' served

    Zone temp is in box

    Zone temp offset is color in box
  42. Replies
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    10,056

    Floor plans have a purpose to show the zones...

    Floor plans have a purpose
    to show the zones
    this is essentially its only use,
    but there is no other better way to represent this data, that i can think of.
    it is usually the last thing done on a...
  43. Replies
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    1,322

    in colder climates this design would be...

    in colder climates this design would be difficult. it is likely even with minimum air for ventilation that the mixed air to the boxes is below what can be reheated to the space. and the interior/core...
  44. Replies
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    1,322

    yea, the filter should help. you'll get more air...

    yea, the filter should help. you'll get more air from the primary ducting.
    but have him add a speed control for the fan in the box too. then you
    can give the control guy another output and the...
  45. Replies
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    1,125

    CTL Temp would be the calculated setpoint , room...

    CTL Temp would be the calculated setpoint , room temp is obviously the phsical point.
    DualDuct, heating and cooling, two setpoints, some sort of deadband and the control
    point lives in the middle..
  46. Replies
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    3,334

    why independent is better. There is no better...

    why independent is better.

    There is no better in this comparison.

    It isn't a Chevy vs. Ford thing..

    more like a Mercedes vs. Kia thing,..

    There is only proper application and improper...
  47. Replies
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    974

    errrs..... should be.. substitute a var...

    errrs.....

    should be..
    substitute a var FireRate for the Boiler 1 Fire Rate in the Scale statement..

    var FireRate

    Do Every 30s
    If FireRate>Boiler 1 Fire Rate +0.2 then
    Boiler 1 Fire...
  48. Replies
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    974

    Cold Start: Depends on what other sensors or...

    Cold Start:
    Depends on what other sensors or control you may have.
    and what the problems on startup may be, type of equipment, type of load,

    Often on start a boiler will be cold and have only...
  49. Replies
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    974

    yes it was just an arbitrary choice, which from a...

    yes it was just an arbitrary choice, which from a user standpoint probably not
    a good idea, as they wouldn't know... just one STPT may be a good idea..
    add
    Boiler 1 Modulating STPT = Boiler 1 STPT...
  50. Replies
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    And as long as we don't have any thing to do...

    And as long as we don't have any thing to do today, why not just use 2 lines... ;)

    'Boiler 1 Fire rate' = Scale ( 'WK Boiler 1 Pressure' ,0,1,100,'Boiler 1 Modulating STPT',45)
    Switch( 'Boiler 1...
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