AZ ROC R-4R Boilers (Residential)
Arizona ROC R-4R Boilers (Residential) Examination
Safety Inspections TestingEnglish
Exam overviewPractice session
Per IPC Section 608 and IRC Section P2902.5.4, what type of backflow prevention assembly is required on the cold water makeup supply line connecting to a hydronic boiler when chemicals or glycol are added to the system?
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