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  1. Replies
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    The Trane document in this thread may be of help....

    The Trane document in this thread may be of help.
    http://hvac-talk.com/vbb/showthread.php?792662-BCI-R
  2. Option 1 - if you have access to the PID tuning...

    Option 1 - if you have access to the PID tuning parameters and integration can be set to zero (the latter makes some Carriers a no go) try this. On both AHUs: Set the VFD acceleration to five minutes...
  3. Labeling. One is branded Metasys while the other...

    Labeling. One is branded Metasys while the other is Facility Explorer. Both are Distech.
  4. I doubt this controller is up to date regarding...

    I doubt this controller is up to date regarding software and patches. The browser will need to use an older (rel 25) version of java to access the FX20.
  5. Thread: Lon Plug

    by DaveCR
    Replies
    12
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    602

    Mouser.com

    Mouser.com
  6. Thread: DX 9100 Help!!

    by DaveCR
    Replies
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    441

    Johnson still has the manuals on their site....

    Johnson still has the manuals on their site. http://cgproducts.johnsoncontrols.com/default.aspx?topframe.aspx&0
    Metasys System / Hardware / Controllers / N2 Controllers / DX Series Controllers
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    Thanks for the info. We ended up gutting the...

    Thanks for the info. We ended up gutting the electronics from the unit and installed a wall thermostat and some relays. Had to do this some years back with a Tadiran ductless when parts weren't...
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    329

    Haier minisplit parts source?

    Any one know of a parts source for these units. Local "rep" has sold just a few of these things and is not bothering to return calls. TIA
  9. Thread: best lap top

    by DaveCR
    Replies
    30
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    1,189

    I check brand reliability at Consumer Reports...

    I check brand reliability at Consumer Reports before I make a purchase. For Windows laptops Toshiba, Acer, Gateway, HP are the most reliable (in the order listed). My work HP has been solid for 5+...
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    Google "niagara ax user guide" (it is a 20mb...

    Google "niagara ax user guide" (it is a 20mb download)

    First though on the warm classrooms is they are not occupied.
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    Here's the JCI Flash Sheet. 486011

    Here's the JCI Flash Sheet.
    486011
  12. Replies
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    376

    If the controllers are at version 5.3, lock ups...

    If the controllers are at version 5.3, lock ups are a known issue; here is the body of the tech bulletin.
    -------
    Problem
    FX-PC Series Programmable Controllers running FX Programmable Controller...
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    The product pages for their bacnet to modbus...

    The product pages for their bacnet to modbus devices don't mention auto discovery. Try manually adding a point to the jace and see what happens.
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    This machine, if it has an option card installed,...

    This machine, if it has an option card installed, can have its set point and demand limit controlled by 4-20mA (2-10Vdc) signals. The card was a popular option; most of the machines I've run across...
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    343

    I think that A series machine is Trane Comm3/4...

    I think that A series machine is Trane Comm3/4 only. To be sure, give Trane a call and make sure you have the serial number handy.
  16. Replies
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    Those boards need an option card to do Lon.

    Those boards need an option card to do Lon.
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    200

    Put a 10k resistor in series with the slider....

    Put a 10k resistor in series with the slider. Make the AI point a 10k thermistor. Use a SPAN block to get your set point range.
  18. Replies
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    We have done a few of these machines and Tranes...

    We have done a few of these machines and Tranes as well. The controllers have been Johnson programmables (DX9100, FX15, PCG26). To date we haven't had to deal with an EXV, but would probably use an...
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    The points, all of them, should come in off of...

    The points, all of them, should come in off of the .prn file. Try manually adding a device to the N2 network and, in the Resource File selection, browse to the appropriate .prn file. If the...
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    Usually an extra rung or two can be had by...

    Usually an extra rung or two can be had by condensing simple OR blocks. A Or B = C (two rungs) has an equivalent: Not A And Not B = Not C (one rung). If that isn't available, a Timer configured as...
  21. Thread: Niagara Facets

    by DaveCR
    Replies
    1
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    375

    I messed around with the facets approach a little...

    I messed around with the facets approach a little bit and got the same results you did. Since I generally like easy and brute force is OK, I'd simply append the units via an additional bound label....
  22. Thread: CASCADING

    by DaveCR
    Replies
    2
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    477

    google variable frequency drive cascading....

    google variable frequency drive cascading. Danfoss has an outline that covers this control subject among others.
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    Around here, it's "get out the chalk"

    Around here, it's "get out the chalk"
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    Hmm, and all this time I thought we were all...

    Hmm, and all this time I thought we were all independently wealthy and did this for fun...
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    Find a suitable wire sheet and drop in the...

    Find a suitable wire sheet and drop in the following components from the kitControl pallet: Util/MinMaxAvg and Math/Reset. Set up the MinMaxAvg block for the number of inputs required and link the...
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