Search:

I service a site that has a Liebert SiteLink-E which is providing CRAC unit data to the BAS system via BACnet over IP. The I.T. dept just changed their Lan scheme and have changed all BAS devices to...

That's right. The event viewer will allow you to discard up to 1000 at a time until you're done. If you have a head-end (ADS/ADX) you can use the database manager (little green envelope) to manage...

I recently set up a PMI workstation using a box with XP-SP2. The documentation states that SP1 is validated, SP2 is "Cursory Tested", and SP3 has not been tested or validated at all. What I found is...

I have attached the M-graphics user guide in case you didn't have it.
The easiest way to create new points is to copy and paste existing ones, and then modify their properties. If the existing...

One thing that always seems to get overlooked is the location of the floor vents. These data centers are ever changing with new racks going in, coming out, and getting moved. Some of the older racks...

Your plumber should be familiar with, and following the procedures for correctly sizing vents and connectors as published by NFPA in a publication entitled, NFPA 54: National Fuel Gas Code (NFGC)...

Although I don't have the cut-sheet on the exact sensor used in a YT chiller, I have attached a document that covers the wiring of the most common transducer configurations that you would probably...

Fieldserver is one of the companies out there that can make almost any system talk to another. We use them frequently. They may be pricier than others, but the applications, resources, and support...

I can't take credit for this. I cut this from an old post. I have also read that fans that have too much mass/inertia cannot be used with a DC braking parameter------it's just too much energy for the...

I'm not very familiar with the TUX controllers, but from what I've read, you may need a BCM-TUX to work as a gateway to make the propritary TUX controller data available as BacNet data on an IBEX...

I too joined the cult some years ago. My first digital was a Beckman. When it gave up the ghost, the new Flukes were the most comparable line available when considering price, feature and durability....

If your VFD's control static pressure, then that is all they should do. Although the performance and health of the DX cooling may be somewhat dependent upon proper airfow accross the evaporator, you...

I can't vouch for the models that are currently offered (maybe someone else here can) but what is important is the sequence in which you cycle the fans. If you noticed from the damper option, the...

In D.C, they decide to construct a new building---Everyone's exited. The 100% drawings are completed some years later. The bid process begins. The engineers had spec'd the control system around the...

I think I've amswered my own question-------actualy led to the answer by another post. I'm not sure if it's the same one that I used to carry, but the "Preston Guide" seems to be the industry...

A long time ago (in a galaxy not too far away) I used to carry around these little cross reference guides for the model numbers of most of the major brands of equipment. For instance, I could look at...

On the same subject, has anyone been to a class that covers basic control logic? I'm interrested in a course that covers line-by-line programming. I realize that most programming languages are...

Below are excerpts from the attached Trane RAUC manual. Based on the original low ambient options intended for this unit, I would contact Trane for advice regarding the use of over-the-counter head...

Minn, my last post were my initial thoughts after reviewing some data comparing the two types of glycol. There are correction factors for required pump volume for glycol as compared to straight...

Although the heat transfer rate of propylene is slightly better, it's viscosity is much greater than that of what you had. This may simply be affecting the volume of the heat transfer medium (Glycol)...

I'm not familiar with your product or software, but in my world I have to import .XIF files to make some LON devices wake up. I have also been through the nightmares of having the network image of...

I too would recommend a better quality thermostat. When these thermostats are returning to the occupied/comfort heating setpoints, they should do so by excluding the use of electric heat---as long as...

I don't have any brand specific advice to offer, but sizing is very important. You may not be able to just install "any filter that will fit" in your existing filter track. The furnace blower was...

Just found a "Sticky" by RoBoTek related to the matter. I guess we jumped the gun.

(Rule 1 of Professional Membership: Never talk about Professional Membership!)

I would consider a deal with...

Here are some usefull documents related to the Alerton controls training.

When people say "Furnace" I automatically think gas/fuel or straight electric, in which case the A/C evaporator coil is usually separate and downstream of the blower. This would put it (and the...

Funny you should ask.......I just sent a second email a few hours ago asking the same thing. Maybe it's slower over the holidays.

Thanks for your input. I can't wait to see them in action--------if we land the bid.

See page 77 to make your own, Or you can order the cable kit
#0-073-0920-0

Attached are some examples of refrigerant charge compensators. The one example shows the use of the compensator in combination with an accumulator. There are probably designs out there that use only...

So here I am working the Winter Classic and I can't keep the ice solid. This doggon machine just won't keep up--------HELP!!!!!!!!

Just kidding------I wish I were there.........But not working.

I just did a search for previous threads related to this, but the posts I found were very old. Looking for some current input.
My primary contract is a campus of Gov buildings in which the next new...

I'm with you Snewman----for now----unless someone can prove otherwise. I was also told by one of my superiors, years ago, that this could happen. In fact, we had one rooftop condenser that we thought...

The numbers that you provided indicate a Tempstar condenser. I'm almost positive that the fun should be pulling through the coil and discharging out of the top. A technician should be able to verify...

Well, you say you like to read? Here are some documents related to the subject.

I just reviewed the wiring diagrams within the installation manual for this model, and it states that it requires a common terminal connection to operate. You would need three wires available at each...

Hey Bill, sorry for the delay. I missed your question initially because you didn't start an actual thread about your issue. I caught it when reviewing my thread involvement. Anyway, without a model...

Could it be a simple configuration issue.

I'm not sure how current the manual is, but here is an excerpt that may be of interest.

Manual 160.80-M1---page 82

Full Load Amps - This is the...

I'm sure that there are guys on here that are familiar with this model, but my initial thoughts would that there is a simple problem with the low voltage wiring between the T-stat/indoor/outdoor...

I popped into one of my local HVAC parts suppliers yesterday to ask about the latest in whole house humidifiers. I'm looking for one to use on an uplow gas furnace, so a bypass is out of the...

I'm new to the site as well. Just thought I'd give you a shout.

I’d have to do some searching around for some syntax examples. I assume that your SQL is below 2005. OSQL was replaced by SQLCMD at 2005. I’ve seen examples of changing the SQL SA (System Admin)...

Well, thanks for the spanking---I guess. Just getting my feet wet in this forum and didn't mean to muddy the waters. I do get your point. I guess I'll live and learn as I go to excersize better...

I guess that I never realy introduced myself. I joined over the holidays and have been reading threads, posting, and have joined a couple social groups. I've been doing this stuff sinse I banged...

I was curious if there have been any affects to the York residential line of equipment (good or bad) that could be directly attributed to the buyout of York by Johnson Controls?

I don’t know if this has already been covered, but I would suggest that if you have proof of a problem, and a legal leg to stand on, that you have your contractor remedy the situation.
Have them...

The pressure dependent VAV's are initially balanced based upon the expectation that they have adequate air flow (or pressure) from the base system. They are blind to any changes in supplied static....

There may be some backdoor hacker methods out there for restoring or changing ADS/ADX/SCT/NAE passwords, but you may do more harm than good if you make mistakes in places like SQL or the Windows...

I just went to the johnsoncontrols.com website and entered their literature area "QuickLit" by selecting "Products and Solutions" / "HVAC Controls" / "Resources" / "Johnson Controls Product...

The Johnson Controls M-tool package is now at release 5.4.2. According to their "Compatibility Matrix" spreadsheet, the package is tested and supported through Windows XP (Service Pack 2) I know that...