AK HVAC Practice Questions - Alaska Mechanical Administrator HVAC License Exam

What is the purpose of a backflow preventer on the water supply connection to a hydronic boiler system?

To increase water pressure To prevent contaminated boiler water from flowing back into the potable water supply To regulate the boiler temperature To filter sediment from the incoming water

Correct Answer:

To prevent contaminated boiler water from flowing back into the potable water supply

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