How does the Flo Smart Water Monitor and Shutoff respond to hot water recirculation loops in the plumbing system?

This article contains information relevant to the Moen Flo Shutoff, which was formerly known as the Flo Smart Water Monitor and Shutoff system.

Moen recommends turning off the power to water heating appliances when water is shut off for extended periods of time. Appliance safety relief devices rely on water make-up in event of heating control failure.