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

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Under International Residential Code (IRC) Chapter 20 and ASME Section IV standards, what is the maximum allowable operating pressure for a low-pressure residential hot water heating boiler?

15 psig 30 psig 160 psig 250 psig

Correct Answer:

160 psig

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