Under the 40 CFR 82.152 definitions, an appliance using R-134a is which kind of appliance?
Refrigeration · EPA 608 Type II. The correct answer, and the reasoning behind it.
Identifying refrigerants, system components and the state of refrigerant in each.
The question
Under the 40 CFR 82.152 definitions, an appliance using R-134a is which kind of appliance?
- Low-pressure
- Medium-pressureCorrect answer
- High-pressure
- Very high-pressure
Why “Medium-pressure” is correct
Medium-pressure appliances use a refrigerant with a saturation pressure between 45 and 170 psia at 104 °F. EPA's examples include R-134a, R-12, R-114, R-124 and R-500.
Source: 40 CFR 82.152
Why the other answers are wrong
- Low-pressure — Low-pressure examples are R-11, R-123, R-113 and R-245fa.
- High-pressure — High-pressure examples are R-22, R-407A, R-407C, R-410A and R-502.
- Very high-pressure — Very high-pressure examples are R-13, R-23, R-503, R-508A and R-508B.
Practice more of this
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Unofficial, not affiliated with the EPA or any EPA-approved certifying organization. Questions are original practice written from public EPA material, not real exam questions.