Description
The Supco SHL502 Gas Furnace Limit Thermostat is a temperature protection control used to protect furnace heat exchangers and duct units from overheating in HVAC systems. It has a calibration at 180F and at 30F, providing a controlled high-temperature cutoff during operating conditions. It is placed in the furnace plate or heats the assembly section. It monitors air temperature increase and interrupts burner operation when limits are exceeded. It is used in gas furnace maintenance and replacement work to ensure thermal regulation and consistent system protection in systems.
