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  1. Replies
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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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    213

    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
  3. Thread: best lap top

    by DaveCR
    Replies
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    939

    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
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    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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    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.
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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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    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.
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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...
  15. Thread: Niagara Facets

    by DaveCR
    Replies
    1
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    300

    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....
  16. Thread: CASCADING

    by DaveCR
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    261

    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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    This set up works for me with a JCI branded jace...

    This set up works for me with a JCI branded jace at 3.6.xx

    457311

    And CryptoService installed.

    457321
  21. This label works for me on JCI branded jaces....

    This label works for me on JCI branded jaces.
    456241
  22. This guide...

    This guide http://orioncontrols.com/literature/OR-PTLNK2BTL-TGD-01G.pdf may be of help. Search it for hot gas...
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    Have google search for condenser fan speed...

    Have google search for condenser fan speed controller.
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    Ditto

    Ditto
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    Old thread, current problem, right answer (com

    Old thread, current problem, right answer (com < 10). Thanks.
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