The slow-opening feature ensures a controlled ignition sequence

this flame rollout limit switch monitors the burner enclosure for abnormal thermal conditions

Smith anode rod ensures exact 0

Complete Assembly Solution: Eliminates the need to source individual sealing rings and high-temp adhesives separately for 88 series blocks

This model typically includes the switch and 1/4" compression nuts

Trane SWT2685 Limit Switch 320819-301 The slow-opening feature ensures aThe Trane SWT2685 Limit Switch (also identified as SWT02685) is a critical OEM replacement bimetal disc specifically engineered for inducer motor temperature monitoring in Trane and American Standard gas furnaces. This SPST auto reset switch is calibrated to open the electrical circuit at 155F to prevent thermal overload of the inducer assembly and heat exchanger, automatically closing at 95F once safe operating temperatures are restored. Designed for