Pipelini
17-04-2012, 01:38 PM
Can 438A be used in a R22 pumped circulation system (-28 degC)? If so what are the implications?
Brian_UK
17-04-2012, 11:33 PM
Maybe not, see the second from last paragraph on page 2....
http://www2.dupont.com/ISCEON/en_US/assets/downloads/k22217_ISCEON_MO99_retrofit_guidelines.pdf
Read the lot anyway.
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