The rollout switch is a safety device mounted near burners that detects when a cracked heat exchanger forces flames out of the combustion chamber. When abnormal airflow raises the temperature at the switch, it triggers a shutdown to prevent dangerous conditions.
safety, which is called the rollout switch. The rollout switch is always placed just outside of the burners. Now, should there be a crack or rust or, you know, a break into the heat exchange, once the blow motor is pushing that air across the heat exchange, it will create a pathway for that airflow to go into the heat exchange and push the flame out. And at that point, the rollout switch would detect that, okay, the, the, the heat is coming this way. The temperature on the rollout switch would raise, which would trigger the rollout switch, which triggers safety, and in that sense would shut the system down.
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