I’m in my second year of bas controls and this video would have been amazing to watch right off the bat. Awesome job!
@NEACHTWAIN9 ай бұрын
Great video. Little tip for anyone in the field, these U-line Automated Logic cards operate in a antiquated way compared to modern stuff. The U-line cards (any controller that has a U before the numbers, IE U551, U220, U341V+, etc.) are controlled by a master controller, called a UNI16 or UNI32. All of the programs for the slave devices in the U-net are held in the UNI card. The slave devices essentially act like expanders to the UNI card. The slave devices do not communicate back to the BMS head end, only the UNI controller does. If an individual equipment is not running but the rest of the controllers on that network trunk are working, the end device has (probably) failed. If you have several VAV boxes/FCUs that are not working, and they are in the relative same location, like on the same floor or same section of the building, its most likely the UNI card that is having problems. Always check for 24V input and solid terminations on the RS485 connection (will be labeled as CMNet, ARCNet or U-net on the controller). I was a master tech for Automated logic and I have a lot of experience with these guys.
@davidmunt31799 ай бұрын
Thanks. I work with ALC products, and I'll keep this in mind, if I'm doing service on these older controller versions.
@washedupwarvet20278 ай бұрын
Shit do you work in the Boston area? Been having ALC issues for months and can’t get anyone here to fix it. They’ve sent out a guy a few times but he literally spends half the day on the phone with someone else. My last building was Continuum(super easy) but I actually like automated logic. I’ve learned alot and like the options it has.
@andrewjacks86719 ай бұрын
Had a thought as I was listening to you. The inputs are your eyes reading/seeing system operating conditions. The outputs are the hands flipping switches and turning dials. Always thinking of new ways to explain things to the new guys, so thanks.
@Kimbrelloo9 ай бұрын
Sad we need a laptop to run a Heat Pump now.... Used to have all the Mechanical parts on the van for Borg Warner to MarvAir to every brand
@LC-qi5ff9 ай бұрын
Sounds like a dream
@andrewjacks86719 ай бұрын
If you can figure out how to get a contactor control speed/frequency for a compressor you will be a rich man.
@allen17sbmvp9 ай бұрын
Great video, was just getting taught this week on this. Your explanation was definitely easier. Ty
@HVACTIME9 ай бұрын
Thank you, it's awesome to hear your getting actual training on the subject. The industry needs more.
@paulgarcia4588 ай бұрын
I did a bunch of hydronic VAV piping at FAU in boca, going back some years,
@mechanicalenvironments9 ай бұрын
This is great! Thanks you for taking the time to put this together!
@jefftrain689 ай бұрын
Awesome! Thank you!
@RobertTuck-vo8cw9 ай бұрын
IC = Integrated Circuit.
@williambutler3749 ай бұрын
will you create some content that details troubleshooting a FLN that is daisy chained?
@thomascrane81309 ай бұрын
How does a CDC input work when it confirms flow please
@thesilentonevictor9 ай бұрын
I heard you said ice machine interesting you all rounder I guess tech
@HVACTIME9 ай бұрын
Yeah I did my years in low temp before I got into chillers and heavy commercial.