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Type: Posts; User: FlewtheCoop

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  1. Replies
    11
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    2,048

    Tom, Here are a few options: Add...

    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...
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    7,899

    Tight motor, imperfection on the rotor resulting...

    Tight motor, imperfection on the rotor resulting in higher friction. Who knows. Is it the digital modulating compressor?
  3. Replies
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    1,800

    Without getting on a Variable Air Volume...

    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...
  4. Replies
    73
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    6,361

    TAC

    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...
  5. Most humidity and temperature sensors are within...

    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...
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    775

    Its one big room? Definitely one unit,...

    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...
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    23,433

    This stuff sounds as finicky as 407C. This may...

    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...
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    3,088

    System balance is looking like your best bet. If...

    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...
  9. Replies
    5
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    1,023

    Unfortunatly unless you invest in an energy...

    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...
  10. Replies
    21
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    3,088

    Joey, Chiller guy is dead on if your pressure...

    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...
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    653

    Ha, couldnt of said it better.

    Ha, couldnt of said it better.
  12. Replies
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    978

    I'll definitly look into those for the next spec...

    I'll definitly look into those for the next spec we write. Thanks for the tip Krondor
  13. Replies
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    653

    Yup the links below you should be able to get all...

    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.
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    1,597

    We use these all the time, they're good to cool...

    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...
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    5,416

    If your unit doesn't supply multiple spaces or...

    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. ...
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    978

    We did a few larger installations with Daiken and...

    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...
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    5,674

    It sounds like your just getting started in the...

    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...
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