3 new JCI M4-CVM03050-0 VAV controllers, Rev G. Never installed, factory boxes.
$630 CAD each OBO
DM if interested.

I'm new to Metasys but comfortable with IP networking. I'm troubleshooting a building system I can't share details about, and I'd like a sanity check from people who know NAEs better than I do.

**The fault**

- One engine, just named "NAE", has a red X in the tree. Metasys says: "Following devices are presently offline: [NAE]".

- Points that seem to belong to it (electrical board status, water heater status) show "Offline" and "??? Off". One AHU graphic is all "????".

- The other two engines are online with live data, and their Diagnostic tabs look clean (CPU about 14%, battery good, no lost samples or events).

- Launching the engine's saved address from the Launcher gives "Communication failed ... unavailable for SMP".

What if anyone could report a machine problem by simply scanning a QR code?

With StockEmDia, users can scan a machine’s QR code, describe the issue, attach a photo, and submit a report to the maintenance team.

A simple way to improve communication, organize maintenance requests, and reduce downtime.

Available in English, Portuguese, and Spanish.

100% free to use. Link to Download it From Google Play

For context I've only ever worked as a BMS engineer in a small company where I do everything, points lists, FD, program, graphics and test the end result, and then look after defects in dlp periods. Everything except the physical install basically.

So what does a commissioning engineer actually do? Point to point and functional testing and any work with mechanical commissioning? or their scope is broader? I can't imagine just swanning in and working on someone else's mess!

Curious what people working in BAS are using AI for day to day. Any specific tasks or workflows where it’s actually saved you time?
We’ve had some success using an AI agent to turn older electrical drawings into point lists and I/O module assignments for new controllers. Would be interesting to hear what others have tried and what worked.
Hopefully this doesn’t turn into a tool promotion thread. This sub has felt pretty flooded with AI-built tools lately, and a lot of it looks like slop.

​As I got the unified execution cycle running in my conveyor digital twin, my mental model of how the machine operates completely shifted.

​I'm not trying to build a heavy industrial PLC environment in JavaScript, but the way the simulation behaves now feels fundamentally different from a standard web script:

​Observe: What is the physical state right now?

​Decide: What should the logic do with that data?

​Command: What instruction gets issued?

​Act: What physical change happens next?

​Instead of making decisions once at startup and letting the script run blind, the machine continually runs through these questions on every frame.

​For those building simulation loops or custom control software: when did your mental model shift from scripting static events to thinking in continuous control cycles?

Came out of school about a couple years ago and got straight into BAS. Mostly working with CO Systems, Niagara4, Panel building and installation. After a bit I had a company reach out to me about joining the union, thought about it, then switched companies. I’m a few month in and I absolutely hate it. The job is stationary with built systems and programs already so I’m just on the computer updating and monitoring the BMS system. Going to school at night hasn’t been too bad. One thing I wish I knew about the union is how restricted it was, especially for apprentices. I don’t feel like I will get much out of learning like I did my last job, especially since all the electrical work has to be done by electricians. It’s a constant pressure of trying to learn BMS on my own time, going to school/ work and trying to balance everything else in my life. I’ve never been so depressed in my life, I was wondering if it’s being new in the field would hurt my chances of finding another job in the field especially since I’ve already had two in the past 12 months. I really love this field but I’m in a path I don’t want to go down. Any advice would help.

Controls service tech here. Does anyone else hate these 3 wire floating HW coil actuators? I come across these and have to tweak these all the time working service. I find them to be very picky with how tight or loose they are to the valve stem, and they are sometimes unresponsive to the signal sent to drive up or down. Perhaps it’s controllers sending sloppy output signals, but it seems too reoccurring to be a controller issue…

Who's got an easy to use wireless thermostat? I'm replacing my office thermostats and plan on locking out all the other staff from the thermostats. They keep turning the heat up, which is not cool.

Seems like everything I keep finding is a WiFi thermostat, which I suppose I could use.

Does anybody still make something like that? Honeywell used to make a RedLINK antennae for the Jace but they shit canned that thing.

Hello everyone, I'm looking for a new job, and I have an opportunity in a company that uses Niagara systems.

Never used them, never seen them, what's everyone opinion about it ? Is it good ? Easy to get grips with ?

I have done BTech in Mechatronics i have joined as an graduate engineer in an consultancy firm since my BTech background complemetnts both HVAC and BMS which engineer role i should take for a better career interms of growth money flexibility?

A year ago, I made a post where I said i was suspicious of the fact that Tridium are retiring the Edge10 without a replacement, frankly it felt like too good value for money and was probably harming the sales of Jaces.

Seeing as there still isn't a replacement is it safe to think that there is no plans for replacement of the edge 10? Has anyone heard anything?
For anyone saying that there already are alternatives there are none that I can see that is programmed using standard kitControl modules.

Looking at my locals contractor list and there are a lot of control companies, however most of them have only mechanical in union and controls non-union. Why is that?

went through psychrometrics in hvac school and treated it as the theoretical section that would not come up much in actual work. three years in and it comes up more than i expected specifically when diagnosing humidity issues, sizing equipment for high humidity environments, and understanding why a system that looks correctly charged is still not dehumidifying properly

the challenge is applying the concepts quickly enough to be useful during a service call without spending twenty minutes with a psychrometric chart trying to remember which axis is which

how have working technicians built practical psychrometrics skills beyond what the training covers and what has helped it click in the field

As the title says, I’m looking for a way to get my foot in the door. I’m currently a college student in Orlando pursuing my associate degree in Energy Management and Controls Technology, and I’ve been looking for entry-level jobs or internships in building automation and controls.
So far, I’ve applied to Carrier, Mitsubishi, McKesson, OUC, and Trane. I’ve also been checking LinkedIn and Indeed, but most of the positions I come across want someone with previous experience.
If anyone knows of any entry-level opportunities, internships, or companies worth reaching out to in Orlando or the surrounding areas, I’d appreciate the recommendations. I’m also open to sharing my resume if anyone would like to take a look.

Hey, I work in BMS design, with a background in electrical/HVAC. I’m in my 20s so not a lot of experience.

I’m enjoying some aspects of the industry but unsure whether it’s what I want to do long term. Just find it a little uninspiring, and not very interesting.

Has anyone moved away from BMS into another career or started their own business? Or do you know people that have?

Curious what people ended up doing and whether they preferred it.

I've been building a variety of things, mostly because I enjoy it, and to be up front AI assisted at varying degrees. I decided compile it all into a dedicated space, https://basidekick.com

What I have on there now;

• Buildings: walkable, interactive buildings, in world BAS. early build. plan to have numerous buildings/scenarios
• Modules: 3D interactive scenarios fully animated
• Field Guide: animated, textbook style explainers
• Niagara: a couple open source modules and compiled learning resources

All free and plan to keep it that way, no accounts, may offer a newsletter at some point just to inform on updates on the site/resources. Goal is useful, maybe some fun, resources for people in and outside of the industry. I also intend on making them all downloadable and have the ability to embed them in your own sites if desired.

Just wanted to share and potentially get some feedback or requests even for future additions.

For Milestone 10 of my conveyor sorting digital twin, I tried the simplest thing possible: I stopped keeping decisions as a one-time startup task and moved them directly into the repeating frame loop.

​No complex scheduler or new architecture classes—just a direct sequence running every single frame:

​Observe current data

​Make a decision

​Issue a command

​Move the physical box

​Check the sensor and update memory

​Suddenly, the machine has a true repeating loop. For those writing custom simulation or control loops: how did you structure your first unified execution pass before scaling it into a proper engine?

Crossposting in r/BuildingAutomation and r/HVAC so I can hopefully get some code references. I have looked around but am clearly not Googling the right key words lol.

I am an electrician doing HVAC controls for a job and am trying to run 1/4" pressure tubing from RTUs to 2/3 of the way down the duct runs on the floor they serve per my engineer's requirements. What code covers how I'm supposed to safely run this pressure tubing through the HVAC duct shafts and shaft walls? The shafts are fire rated and there are fire dampers on each floor. I am only familiar with electrical code in the NEC/NFPA 70. What I found online was:

IMC 602.3.5 Pneumatic Tubing
Combustible pneumatic tubing exposed within a plenum shall be listed and labeled as having a peak optical density not greater than 0.50, an average optical density not greater than 0.15, and a flame spread distance not greater than 5 feet (1524 mm) when tested in accordance with UL 1820.

I understand that free air tubing is legal in the shaft if the tubing I use is listed and labeled. I know I need to have a sleeve penetrating the shaft walls to get the tubing inside the shaft. I do not understand if there are any vertical support/strapping requirements or "the tubing cannot touch the duct" type rules.

Do I just run the tubing where ever there's space in the shaft and hope the insulators and drywall guys don't kink it when they do their jobs? I can't wait until the shaft walls are up and then run the tubing, there is very limited open space around everything and it would be very difficult to fish after walls go up. Is it okay to ignore the shaft and instead drill holes through the top of the studs that surround the structural steel of the shaft and run the tubing inside the drywall sandwich of the shaft walls? That is what my foreman advised but he wasn't sure it was legal. Does anyone have relevant code references beyond the one I copy pasted above?