AZ ROC R-4 Boilers Including Solar Practice Questions - Arizona ROC R-4 Boilers Including Solar (Residential) Examination Exam

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According to IRC Chapter 20 and ASME Section IV, what is the maximum allowable working pressure (MAWP) for a low-pressure residential steam heating boiler?

15 psig 30 psig 50 psig 100 psig

Correct Answer:

15 psig

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