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Thread: BO AND AO

  1. #14
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    edit: but its too late ot go to the supply houe, and you need ot make it work NOW

  2. #15
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    Quote Originally Posted by Elfshadow View Post
    Which is why I asked before starting to list stuff.
    Thanks Elf, you get 10 internets points.

    Flange -10 internets.
    UA LU189

    10mm, because it's better than .45acp

  3. #16
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    Quote Originally Posted by flange View Post
    ok, well he still needs to learn some things. how do you deal with having a 2-10 volt sensor, but need a 4-20ma input??
    Ohhh.. I get to learn something.

    Standing by for ML to respond.
    UA LU189

    10mm, because it's better than .45acp

  4. #17
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    whuch us better, floating or modulating control, and why?

  5. #18
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    Which is better location of a three way valve at a coil, supply or return piping? why?

  6. #19
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    Quote Originally Posted by flange View Post
    Which is better location of a three way valve at a coil, supply or return piping? why?
    Now this I would love to see the answers from the guys here, I've heard both ways with backing arguements for each.
    Quote Originally Posted by MatrixTransform View Post
    very soon it is you that will be pwned

  7. #20
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    LOL, while you guys are at it, how about a discrete signal.


    Troubleshooting is not part of the repair............understand the symptoms and you will find a solution.

  8. #21
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    i am not allowed to answer, i have been scolded once today.....but turn me on for a defined period of time and maybe i will, especially if you do so with intrinsically isolated relays.

  9. #22
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    Quote Originally Posted by flange View Post
    Which is better location of a three way valve at a coil, supply or return piping? why?
    Does using manufactures guidelines qualify as an answer?

  10. #23
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    Quote Originally Posted by flange View Post
    i am not allowed to answer, i have been scolded once today.....but turn me on for a defined period of time and maybe i will, especially if you do so with intrinsically isolated relays.
    Subliminal, but I get it.

  11. #24
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    Quote Originally Posted by joey791 View Post
    Now this I would love to see the answers from the guys here, I've heard both ways with backing arguements for each.
    For hot water...
    1- lower pressure of the coil after a control valve may cause conditions where fluid quality to goes down. ie vapour may form in the coil (noise, cavitation, oxygen)
    2- the valve and actuator of a valve in the supply line will be much hotter than the return line (hot actuator = bad)
    3- supply line means more chance of destructive cavitation at higher vapour pressures.

    For cold water...
    1- the supply line may well be below the local dew-point which would mean the valve and actuator may form condensate (water in actuator's moving parts = bad)
    dew point of 22°C @ 50% is 11°C (return may be like 12 °C, and flow may be like 7°C)

    ...bunch of good reasons there
    1 + 1 = 3 ( *** for very large values of 1)

    ...everybody wants a box of chocolates and long stemmed rose

  12. #25
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    Quote Originally Posted by milkyway View Post
    What is the difference between binary outputs and analog outputs?
    ...spelt differently
    1 + 1 = 3 ( *** for very large values of 1)

    ...everybody wants a box of chocolates and long stemmed rose

  13. #26
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    Quote Originally Posted by MatrixTransform View Post
    ...spelt differently
    What do you mean? Are you saying they are the same? I am just asking to clarify.

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