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  1. #1
    Join Date
    Jul 2008
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    433

    York YLAA101 TXV

    York YLAA series 101 ton chiller has a heater of some sort on the TXV it is not an electronic XV. What purpose does the heater serve?

  2. #2
    Join Date
    Aug 2000
    Location
    Austell, Ga.
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    1,296
    The Micro-panel calculates the SSH, It then energizes the heater whish is immersed in a ref. charge and closes off the valve when heater is energized(pulsed) and the valve opens when no heater pulses are seen. Voila'...A "Non-Motorized EXV".
    Ain't "None" of us as smart as "All" of us..

  3. #3
    Join Date
    Jul 2008
    Posts
    433
    So it is then an electronic XV after all. Looks to have just a plain power head and sensin bulb and in the options menu (factory set) it says plain ol thermal XV

  4. #4
    Join Date
    Jun 2007
    Location
    NY
    Posts
    43
    Quote Originally Posted by RichardL View Post
    The Micro-panel calculates the SSH, It then energizes the heater whish is immersed in a ref. charge and closes off the valve when heater is energized(pulsed) and the valve opens when no heater pulses are seen. Voila'...A "Non-Motorized EXV".
    No, you are thinking of the EEVs on a YCAL unit. The YLAAs have little tiny resistance heaters that are glued to the powerhead. They're used to counteract low ambient problems.

  5. #5
    Join Date
    Jul 2008
    Posts
    433
    Quote Originally Posted by ImpellerNut View Post
    No, you are thinking of the EEVs on a YCAL unit. The YLAAs have little tiny resistance heaters that are glued to the powerhead. They're used to counteract low ambient problems.
    Interesting what kind of low ambient problems?

  6. #6
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
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    4,378
    Quote Originally Posted by dave1234 View Post
    Interesting what kind of low ambient problems?
    it is simply an electric heater that keeps the txv head warm. during low ambient conditions (or at least when the ambient conditions are colder than the suction line temperature), the fluid in the powerhead/bulb can condense in the head (which is below the bulb) instead of being in the bulb.
    "Mother" is the name for God on the lips and hearts of children....The Crow

  7. #7
    Join Date
    Jun 2007
    Location
    NY
    Posts
    43
    ^exactly

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