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  1. #1
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    Fun engineer messups

    OK, I'm not going to just hand you the answer on this one.

    1. What's wrong with this picture?
    2. Why should it not be that way?
    3. Guess how it actually got installed on site.


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    Scott Jalbert, WebCTRL ninja, Naiagara AX and EcoStruxure Building Expert newb, SiteScan Retired

    The master has failed more times than the beginner has even tried

  2. #2
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    Pump on drain? Only thing that jumped out. Don't fool with too many towers.

    Seems odd that a bypass would dump in the pan tho.. Situation for an overflow IMHO

    Did I get something?

  3. #3
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    Quote Originally Posted by Juan Madera View Post
    Pump on drain? Only thing that jumped out. Don't fool with too many towers.

    Seems odd that a bypass would dump in the pan tho.. Situation for an overflow IMHO

    Did I get something?
    No drain pump needed, these are 10' above ground level and gravity drain seems to work fine.

    Bypass dumping in the pan is kinda nice, keeps things stirred up IMO.
    Scott Jalbert, WebCTRL ninja, Naiagara AX and EcoStruxure Building Expert newb, SiteScan Retired

    The master has failed more times than the beginner has even tried

  4. #4
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    I’m commenting mostly to learn and follow this post. I don’t have any cooling towers.

    The 20” common supply and return lines would seem to be a bit small for three units with each having 12” return and supply. I’m thinking 22” commons would be a better match.

    Even though each unit has 14” equalizer lines, with only three units connected, the equalizer pipe between the units should be more like 10”.

    I’m not writing with any authority.
    It's an upside down world we live in.

  5. #5
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    I honestly couldn't say anything about the pipe sizing, I hadn't thought about it on that level honestly. I'm not at the level where I check engineers math at that.

    This is more of a sequence of operation fail.
    Scott Jalbert, WebCTRL ninja, Naiagara AX and EcoStruxure Building Expert newb, SiteScan Retired

    The master has failed more times than the beginner has even tried

  6. #6
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    Mar 2008
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    How big a pit do you have to bury these in for the Chwr to prime and work right
    Honeywell you can buy better but you cant pay more

    I told my wife when i die to sell my fishing stuff for what its worth not what i told her i paid for it

  7. #7
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    Jun 2008
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    Windsor, Ont.
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    Balancing flow is my 1st concern. Secondly if the equalizing line is physically below the towers as shown I expect it will eventually become a huge pocket for debris to collect and difficult to clear or drain. I can only assume in SC you don’t have winter operation concerns like we do here with this equalizing line.
    Attached Images Attached Images  

  8. #8
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    I agree with NYRB, the towers should have been piped reverse return to balance the flow. Other than that, I just have some minor observations at first glance, nothing glaring.

  9. #9
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    Just one bypass? Couldn't that create service problems?
    If you were a real tech, you'd solder a relay on that board and call it good to go.

    I do a triple evac with nitro to remove non condensables.

    I use 56% silver on everything except steel.

    Did you really need the " If you were a real tech " ??

  10. #10
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    Or put the bypass on the main headers, not just one tower.


    Quote Originally Posted by BBeerme View Post
    Just one bypass? Couldn't that create service problems?
    If you were a real tech, you'd solder a relay on that board and call it good to go.

    I do a triple evac with nitro to remove non condensables.

    I use 56% silver on everything except steel.

    Did you really need the " If you were a real tech " ??

  11. #11
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    OK, maybe more than one issue with this thing! I do know the final result balancing line was insulated and each pan has heat, I'm not worried about freezing in my climate and the hospital needs cooling 24/7/365 so these will be in use all winter long. Bryn, was that balance insulated or was there some disassembly before this picture was taken?

    The direction I was heading was let's say each tower is sized for a 800 ton chiller and your overall plant load is only 300 tons or less in the winter so you are only needing one tower and you do need the bypass valve to keep the CW temp from getting to low when OAT is in the 40°s.
    Scott Jalbert, WebCTRL ninja, Naiagara AX and EcoStruxure Building Expert newb, SiteScan Retired

    The master has failed more times than the beginner has even tried

  12. #12
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    Quote Originally Posted by JCN View Post
    I agree with NYRB, the towers should have been piped reverse return to balance the flow. Other than that, I just have some minor observations at first glance, nothing glaring.
    What do you mean reverse return? At the moment the CW circulation pumps move the water through the chillers and eventually the top of the towers.
    Scott Jalbert, WebCTRL ninja, Naiagara AX and EcoStruxure Building Expert newb, SiteScan Retired

    The master has failed more times than the beginner has even tried

  13. #13
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    Feb 2016
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    Louisburg Kansas
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    The sketch shown is only a schematic so criticizing the actual install is not possible. I would have put a bypass on each tower for redundancy especially this being a hospital. Reverse return or not the tower distribution should be balanced.
    No man can be both ignorant and free.
    Thomas Jefferson

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