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  1. #1
    Join Date
    Jan 2008
    Location
    Bulgaria
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    30
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    Mix, replace R22


    Hey everyone
    this is Learner.. currently in Bulgaria
    My parents have been importing heat pumps for several years now. The HPs use R 22.
    Can we discharge it - R22 - and replace it with
    R 417?
    can we mix R22 with R 407 ?
    thank you for your help!
    have a peaceful day!
    Learner



  2. #2
    Join Date
    Apr 2006
    Location
    Not so sunny coast (BC Canada)
    Age
    32
    Posts
    1,666
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    14

    Re: Mix, replace R22

    firstly you NEVER discharge R-22 to the air, have it recovered. Secondly R-290 is a replacment for R-22 that offers some good benifits, but it must be used by only trained peoples as it can be verry dangerous if poorly don.

    The system must be solid and leak free, it must be well vacuumed (500 microns or better) this is true for any refrigerant!

    R-290 (Propane) is a nice low energy consuming refrigerant that is safe for our air!

  3. #3
    Join Date
    Mar 2001
    Location
    Dorset
    Age
    66
    Posts
    10,139
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    41

    Re: Mix, replace R22

    Yes you can replace R22 with R417a but you cannot mix refrigerants.
    Brian - Torquay, Devon, UK
    I have to stop saying "how stupid can you be?" to my co-workers.
    They're starting to take it as a challenge...

    BASIC MAINTENANCE. If it doesn't move and it should then use WD40. If it moves but it shouldn't then use Duct Tape.

  4. #4
    Join Date
    Apr 2008
    Location
    LJUBLJANA
    Age
    33
    Posts
    27
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    0

    Re: Mix, replace R22

    you cant mix refrigerants but
    by my experience you can fill R22 into R407C sistems but just about 10%, but you cant fill R407C into R22 sistems

  5. #5
    Join Date
    Jan 2009
    Location
    Bulgaria
    Age
    28
    Posts
    7
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    0

    Re: Mix, replace R22

    I think you can fill R22 with R407C but i must change filter dryer and the oil in the system...

  6. #6
    Join Date
    Jun 2009
    Location
    Columbus Ohio
    Age
    45
    Posts
    171
    Rep Power
    6

    Re: Mix, replace R22

    is using R-290 actually approved anywhere in the world for domestic air-conditioners?

    ive done some experimenting with it, but found it does not like to pick up the oil very well, esp in systems where the evaporator is lower than the compressor physically. even with oil traps oil makes its way down to the evaporator and stays there with straight Propane....
    -Christopher

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