If it is a set of ventfree gas logs, then they must be installed into a code compliant fireplace, which includes a proper hearth extension. If it is a ventfree fireplace, then the listed instructions apply.

FYI, your typical UL listed CO alarm is a piece of junk. The UL std. is not tough enough and these units are very unreliable.

Recommend either the CO Experts or NSI 3000 low level CO monitors.

HTH,
Bob

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