Residential HVAC Installation Practice Exam

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What is the maximum recommended pressure for leak testing on the low-pressure side of a system?

  1. 50 psig

  2. 100 psig

  3. 150 psig

  4. 200 psig

The correct answer is: 150 psig

The maximum recommended pressure for leak testing on the low-pressure side of a system is 150 psig because this pressure level ensures thorough testing without causing any damage to the system or its components. Option A of 50 psig may not provide enough pressure to accurately detect small leaks, while options B and D of 100 psig and 200 psig, respectively, may put too much stress on the system and potentially cause damage. Therefore, the most appropriate and safest option is C of 150 psig.

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