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My firm is doing a job for government ARA work. Out of curiosity and in the interest of trying something different than what i typically would do i got turned on to the Smardt Water Cooled Turbocore...

Tom,

Here are a few options:


Add variable frequency drives to your tower fans for condenser water temperature control. This could be tough if you have multiple chillers on a single tower...

Tight motor, imperfection on the rotor resulting in higher friction. Who knows. Is it the digital modulating compressor?

Without getting on a Variable Air Volume application tangent i think your question isn't how it works, but do you have to do anything different to assure it works properly.

First off, if its a...

You might like TAC MNL series controllers for your plant control. If you don't have controls in the the rest of the building and you want to remote monitor you can run a LON trunk from your MNL to a...

Boston,

See attached for equipment sound power. You'll have to convert it to sound pressure based on the distance from the machine.

I actually have a submittal at my office for that exact machine with the ratings. They're no louder than any other 200 ton air cooled screw screamer. I can scan it in and post it tomorrow morning. ...

Most humidity and temperature sensors are within 2%RH/1 to1.5 Degree F accurate. Your sensors and control loop speed typically aren't the weak point in uniform temperature control. Its usually...

Its one big room? Definitely one unit, absolutely no question. Much cheaper and easier. It will make ventilation much easier and give you much more opportunities for air economizer cycle. Throw a...

This stuff sounds as finicky as 407C. This may not be the most environmentally friendly view on this but i would ride those R-22 units until they die and just replace with 410A equipment when the...

System balance is looking like your best bet. If the entire system has been whacked for ten years it sounds like balancing perhaps never even occurred (or the pumps are improperly sized). Does the...

Unfortunatly unless you invest in an energy recovery type desicant unit (which they may be making now residentially) sub cooling is your cheapest option. I would try droping your set point to force...

Joey,

Chiller guy is dead on if your pressure drop is 1.5 psi on a coil with a design system characteristic of 7.7psi per 70 gpm^2. A back calc puts you in the range of 30 gpm thyrough your...

Ha, couldnt of said it better.

I'll definitly look into those for the next spec we write. Thanks for the tip Krondor

Yup the links below you should be able to get all the info you need:

http://www.tac.com/us/Navigate?node=8710

Its a great device, especially when run with Lon.

Its an ice machine I'm guessing? Is it a factory ice controller? Check if there's an "ice done" (that's Carrier terminology, i don't know what Trane calls it) contact and its fully functional. It...

I cant even begin to make sense out of that. It's ridiculous but far from shocking. There's about 450 less convoluted and more effective ways to use a plate and frame. Did they have free summer...

We use these all the time, they're good to cool down to 0 degrees and yes they have the ever so friendly 410a refrigerant. All you need is a place to put the condensing unit or condenser depending...

If your unit doesn't supply multiple spaces or share a common return duct with other spaces where you could possible move smoke from one area to the next there is an exception written into the IMC. ...

We did a few larger installations with Daiken and Sanyo. Pretty cool stuff. Typically we do use a stand alone dedicated outdoor air unit as mentioned in the previous post for typically neutral/dry...

It sounds like your just getting started in the process of design or are still trying to make an application decision. We do a lot of these at my office, with the whole "green is great" fad these...