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

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Which ASME code stamp symbol must appear on the rating plate of a low-pressure residential heating boiler and its safety relief valve?

'S' or 'A' 'H' or 'HV' 'U' or 'UM' 'PP' or 'E'

Correct Answer:

'H' or 'HV'

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