functioning as a normally closed SPST circuit that opens on temperature rise to prevent equipment damage during restricted airflow or over-firing conditions

The 1980-024 provides an open-circuit output of approximately 30 millivolts

the orifice may be partially obstructed or physically damaged and should be replaced

as natural gas usually requires larger orifice sizing

this limit stop assembly is compatible with both automatic and manual reset series

Nordyne 626352R Rollout Switch functioning as a normally closedThe Nordyne 626352R is a critical safety component designed for high limit thermal protection in gas fired furnaces. This 250F M R safety rollout switch acts as a primary line of defense, monitoring the burner vestibule for flame rollout or excessive heat buildup. Engineered with a manual reset feature, the 626352R rollout switch ensures that the system remains locked out following a trip, requiring a technician to diagnose the underlying causesuch as