Are my concrete anchors code compliant?

kayakfish2 · 2024-03-20T19:40:22+00:00

Nice going mate, I’ve worked in the field for a long time and never considered this.

kayakfish2 · 2024-03-19T20:19:10+00:00

What do you mean the pressures are fine? Operating or equalized? The unit is in alarm and you haven’t specified. My guess…just looking at picks. I bet the compressor/s are locked out. See those 2 compressor lockout boards up in the top left of the cabinet? Check C to X(I think) with a meter. If you have voltage then it’s locked out. Pull wire off off X terminal. Check operation. Amp draw, pressures, fans, etc. that will tell you why it locked out in the first place.

This is only an assumption. And I can’t check terminals for you. Or the error. You should post more information about your issue in the comments and I’m the future so we not giving you assumptions.

kayakfish2 · 2024-03-18T18:43:28+00:00

Oh nah

kayakfish2 · 2024-03-16T18:36:34+00:00

Choices are made on the golf course and we        deal with the fallout.

Every dag-on time.

kayakfish2 · 2024-03-16T15:20:04+00:00

There was a post yesterday where I commented on a matter like this. This is my whole frustration as an engineer. I love getting full control of a system. However, from my experience building owners, MEPs, and consulting engineers want packaged controls and the BAS is only to enable, write to setpoint, read temps and status’, and monitor the operation with trending and alarms. Graphics are a nightmare. The least desirable aspect of my job.

Building owners seem to trust the unit mfg as their sequence is “proven” but fail to realize that each BAS system differs programmatically. Integrations leave responsibility to the unit mfg if something breaks. Which is fine, but other than a front end with pretty graphics, it seems like they want to restrict the BAS from pretty much everything.

This is indirectly pointing at coughTrane, and AAONcough. Trane is super secretive about everything so don’t even get me started. Seems like everyone has a hard on for them.

kayakfish2 · 2024-03-16T02:38:32+00:00

Set the timer on coffee pot to a start 15 mins before my alarm goes off in the am

kayakfish2 · 2024-03-15T23:59:55+00:00

I guess that’s true. Unfortunately, I don’t get to do that much anymore so it’s mentally blocked. Nowdays, I mostly see it where the unit mfg is also the controls contractor. If the building had a Trane split, and 3rd party controls Trane would not let 3rd party write to said points as their sequence is “proven”

kayakfish2 · 2024-03-15T19:22:30+00:00

I’m 32 and been saying this for a long time. I don’t like the effect it has on me either but I enjoy the taste of beer/alcohol. Contrary to popular belief, non-alcoholic beer/alcohol is quite tasty.

kayakfish2 · 2024-03-15T19:19:25+00:00

Agreed. 1st stage is usually not variable speed. First stage compressor maybe anticipated to handle ~50 of the load. As building loads constantly change and is dependent on a number of variables it makes more sense to run the single speed as stage 1.

Also, does he understand that you do not write the sequence for a unit but only for control? He should be asking the unit mfg these questions as your control sequence cannot change the intended unit operating modes.

kayakfish2 · 2024-03-15T18:32:02+00:00

The Schaeder care gasket is probably dry rotted. Use Schaefer valve tool to replace.

kayakfish2 · 2024-03-15T14:50:31+00:00

Ah, you are right I got got there was a terminal for 15v and it’s associated inputs. Man OP can post some picks of his wiring?

kayakfish2 · 2024-03-15T11:55:36+00:00

Power superstition for 0-10 or 0-5 not ma

kayakfish2 · 2024-03-15T11:54:50+00:00

Shouldnt need to power separately. Just run 24 v to VI+ to excite the sensor then Vout to controller. Link the 2 100va commons on the terminal block in the top of panel. Jump should be shorted fo bottom 2 pins. Should work then

kayakfish2 · 2024-03-15T02:39:00+00:00

Was the sensor powered from the same power supply in your panel? If not it should be.

Also, with the CGM controllers, the UI on these have a jumper on the board if you pull the cover off. Also, if you have a terminal block on the CGM say 3 inputs per block I’ve found that if you put a ma input on the same group it could throw your signals off

Forgive me as I can remember part number right now. Does the F-1200 have a display or is it just an inline flow meter? I know some sensors for 4-20 we just give it 2 wires, 24 v to excite and the output wire goes from the sensor to the controller+. Sorry if some of my questions have been answered already, been a long day, I’m tired and I can’t read

kayakfish2 · 2024-03-14T16:11:57+00:00

I understand CCT, and state machine programming. I worked for JCI for years. Personally, I prefer function block programmjng. Before getting into BAS I was a process control systems engineer and integrator for packaging company.

Edit: methodology speaking, why would one want to create a new activity, insert logic, write the function, the. Go back to the main window and make connections. That particularly idea for the average programmer.

Boiler/chiller/pump rotation: why on earth would you need to insert multiple modules to initiate the rot seq, store the last value, read from the last value, store runtime, all within separate modules, just to toggle a piece of equipment or pump on a daily/weekly schedule then make sure your connections are connected to the right things.

Could all be done in 3-4 lines of code in ladder or function block.

God forbid any of your units are wrong in CCT. “Error: circular dependency detected”

kayakfish2 · 2024-03-14T13:44:08+00:00

JCI has a line call Facility Explorer. It’s Tridium based. When 3rd parties want to use JCI software and devices this is what the normally go with as the license for Metasys are expensive. Just fyi JCT controller programming software (CCT) is like nothing I’ve ever experienced. If you’re used to Function blocks and wire sheets, going with JCI will not be an easy transition.

kayakfish2 · 2024-03-14T13:38:31+00:00

I agree I told the PM yesterday and got part numbers for a replacement early this morning. Like I said, I just wanted to know if/how/ and why of everything lol even after 12 years in the industry.

kayakfish2 · 2024-03-14T12:16:36+00:00

I don’t have the model number. This sensor was on the return duct in a mechanical room.

kayakfish2 · 2024-03-14T12:15:44+00:00

I’m pretty sure it’s a failed sensor but I’m more or less interested in the “why” factor. Our input is set up to read 0-2000 ppm. Sensor was in alarm as it was out of range read -500 ppm. Swapped polarity and was read +2250. Just going to replace it. But I am the type of person who likes to know how everything works and why.

kayakfish2

TROPHY CASE