Lochinvar & A.O. Smith 100208172 Rollout Switch 320735-701 this probe can be installed

this probe can be installed in either a vertical or horizontal orientation to suit existing piping

The Johnson Controls A28AA-20 is a heavy-duty two-stage temperature control designed for multi-stage heating or cooling applications in commercial refrigeration and HVAC systems

the brass body construction handles thermal stress efficiently while maintaining flow integrity

ensuring minimal restriction during high-load operations

excessive vibration at the blower housing

Lochinvar & A.O. Smith 100208172 Rollout Switch 320735-701 this probe can be installedThe Lochinvar & A. O. Smith 100208172 Rollout Switch is a critical safety component designed for manual reset operation in high efficiency gas fired boilers and water heaters. Rated at a 250F trip temperature, this flame rollout limit switch monitors the burner enclosure for abnormal thermal conditions. If combustion flames spill out of the heat exchangeroften due to a cracked heat exchanger, blocked venting, or a failing inducer motorthe switch opens