What happens in an unexpected shutdown such as a power outage or component failure?

Although fuel feed stops in a power outage, the pellets in the burn pot may continue to burn or smolder. The duration of this condition can vary with appliance design from a few minutes to an hour or more. The resulting smoke and hot gases rise, seeking the path of least resistance.

If the exhaust vent does not have vertical sections to provide natural draft, smoke may spill into the home. More.

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