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  1. #1
    Join Date
    Feb 2005
    Posts
    1,218

    Xenta 102-AX VAV Controller

    I have not messed around with one of these before and I may be doing a job and want to use a bunch of these.

    I want to know what parameters are available and what I need to do if I got to help the Air Balancer caliberate these during commissioning.

    This is an LNS environment, I have the LNS plugin.

    Is there a balancing procedure document somewhere for these guys?

    Thanks.

  2. #2
    Join Date
    Jun 2001
    Location
    Northwest Indiana
    Posts
    1,302
    TAC has a cool little balancer/commisioner thingy I keep in the truck. Its used to set up the boxes. The AX-102 controllers are an upgrade and do a nice job.
    I have some lit I could email you.
    Let me know
    If you cant fix it right, try again.

  3. #3
    Join Date
    Feb 2005
    Posts
    1,218
    Any literature will be most appreciated.

    But I also want to know if I did not have this balancing tool, can I do everything I need to do through the LNS plugin, or not.

    Thanks

  4. #4
    Join Date
    Jun 2001
    Location
    Northwest Indiana
    Posts
    1,302
    Quote Originally Posted by amigo View Post
    Any literature will be most appreciated.

    But I also want to know if I did not have this balancing tool, can I do everything I need to do through the LNS plugin, or not.

    Thanks
    You an use the plug in but its a lot more leg work depending on where you puter is.

    The guy that trained me to set up the boxes prefered to use the commisioning tool.
    I just looked, and I got some good stuff.
    Not sure if we can post emails here.
    They are PDF docs
    If you cant fix it right, try again.

  5. #5
    Join Date
    Jun 2001
    Location
    Northwest Indiana
    Posts
    1,302
    If i remember right the tool isnt expensive
    If you cant fix it right, try again.

  6. #6
    Join Date
    Jun 2001
    Location
    Northwest Indiana
    Posts
    1,302
    Check your email
    If you cant fix it right, try again.

  7. #7
    Join Date
    Feb 2005
    Posts
    1,218
    got you emails, thanks a lot.

    If you or anyone else can confirm the ease or difficulty of the process through the plugin, that would be great as well.

  8. #8
    Join Date
    Jul 2007
    Location
    Sacramento, CA
    Posts
    250
    There are only two points in the 102AX that need to be setup, and that is in the Plugin under Calibration.
    There is a zero value needed and a max air flow of the box.
    Command the damper to 0% with the override, then make sure there is no air flow from the box, then command the damper to 100% and take a reading of all discharge diffusers, this will be your max flow or high value.
    That is all that needs to be done, the 102AX will use it's logic and control the set points that you have wrote to in the airflow parameters in the plugin.
    The handheld device needs to work with a STR type stat.
    Use the plugin and you can make it eaiser on your air balancer.

    Lontshooter

  9. #9
    Join Date
    Feb 2005
    Posts
    1,218
    so you are saying for the high end, I fully open the box and not set to max?
    And at fully open i enter the high value (whatever the balancer reads) and then I am done?
    then the min and max should be accurate?

  10. #10
    Join Date
    Mar 2005
    Location
    Pacific Time Zone
    Posts
    4,195
    Amigo - I've balanced hundreds of these. The balancers I've worked with have all complemented the accuracy of these devices. I use a two point calibration process. Calibrate low flow first and then high flow, at least with the LON plug in (Its been a long time since I've used the M-Stat/I-Stat/STR250 to calibrate). Lontshooter mentions calibration at zero and max which I don't think I've ever done it that way, but it likely would be faster as in all reality the balancing proceedure is just looking for reference points and calculating from those points - comparing its read value to the actual value you measure and input to the device. You can also calibrate them with an M-Stat that you could give the balancer to calibrate with but I prefer the plug-in.
    I will ship you some docs as well. What type of room temp sensor are you going to use? I personally like the STR250's.
    "How it can be considered "Open" is beyond me. Calling it "voyeur-ed" would be more accurate." pka LeroyMac, SkyIsBlue, fka Freddy-B, Mongo, IndyBlue
    BIG Government = More Dependents
    "Any 'standard' would be great if it didn't get bastardised by corporate self interest." MatrixTransform
    http://threedevilskennel.com/ - not my website.
    Versatile Hunting Dog Federation - www.vhdf.org/


  11. #11
    Join Date
    Feb 2005
    Posts
    1,218
    Thanks,
    have not decided on the room sensors yet. 250 looks good.

    Where in the plugin do I stroke the damper to min/max?
    I see the caliberate tab, which I think let's me put in the actual reading that balancer reads.

    do I flip back and forth between the caliberate tab and browser tab of the plugin and use nviManOverride?

    I don't have a live unit, that is why I am asking these basic questions.

  12. #12
    Join Date
    Mar 2005
    Location
    Pacific Time Zone
    Posts
    4,195
    Read your email!

    Go between the status tab and the calibrate tab. From memory on the status tab near the lower right you'll see damper/motor position and right click on the value there and choose override and you can override the value to whatever you want.
    "How it can be considered "Open" is beyond me. Calling it "voyeur-ed" would be more accurate." pka LeroyMac, SkyIsBlue, fka Freddy-B, Mongo, IndyBlue
    BIG Government = More Dependents
    "Any 'standard' would be great if it didn't get bastardised by corporate self interest." MatrixTransform
    http://threedevilskennel.com/ - not my website.
    Versatile Hunting Dog Federation - www.vhdf.org/


  13. #13
    Join Date
    Feb 2005
    Posts
    1,218
    Duh..., just read my email,

    Thanks bud.

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