tyme875
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hvac/r,what is the special valve used in a refrigerated air drier?
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Posted: 2013-01-31 03:14:00
In hvac/r, what special precautions should be taken with drain lines in walk-in coolers? A.freeze protection B.trapped to prevent air from being pulled in C.sloped downward D.all the above
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Posted: 2013-01-31 03:31:00
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