Exam (elaborations)
EPA Type 2 Questions and answers, 100% ACCURATE, graded A
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EPA Type 2 Questions and answers, 100% ACCURATE, graded A Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: - -pressurized nitrogen When a new system has been assembled, the first thing to do is: - -pressurize the system with inert gas and leak check ...
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