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  1. #1
    Join Date
    Jul 2002
    Posts
    919
    Have been running across floating chilled water valves used as 2 position lately. Some say 2 positioning gets the whole coil cold and dehumidifies better, some say that's not true and uncomfortable. Why pay for a floater and not float it? Time to vote.

  2. #2
    Join Date
    Mar 2004
    Location
    Austin, Texas
    Posts
    1,967
    Originally posted by incontrol
    Have been running across floating chilled water valves used as 2 position lately. Some say 2 positioning gets the whole coil cold and dehumidifies better, some say that's not true and uncomfortable. Why pay for a floater and not float it? Time to vote.
    Here is my vote - very, very, bad idea. By using a two position chilled water valve the system is made to function just like on - off control on DX cooling. It may do a better job of dehumidification while it is on, but when it shuts off it does NO dehumidification.

  3. #3
    Join Date
    Jul 2001
    Location
    Canada
    Posts
    1,821
    Go with MODULATING VALVE

  4. #4
    Terrible, thats why mod valves were made, now if you said you were leaving it open then reheating that is an ashrae cycle for dehum.

  5. #5
    2-10 or 4-20, only use floating if you have to, and don't use on/off, IMHO

  6. #6
    Join Date
    Jul 2002
    Posts
    919
    Thanks guys. I agree with modulation but almost always see on/off.

  7. #7
    Sound like someone had a shop full of floating valves.

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