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  1. #1
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    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
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    Aug 2000
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    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
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    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
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    Jun 2007
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    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
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    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
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    Aug 2006
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    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.
    "Pimp My Service Truck"...that's a show I would watch!

    Get me some rims and spinners, purple LED lights underneath, a disco ball and lasers....yeah!!! And make it a low rider!

  7. #7
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    Jun 2007
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    ^exactly

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