Williams P321826 Limit Switch including the 243-8 and 243-12

including the 243-8 and 243-12 models

Built with a rugged

use a manometer to verify the vacuum is greater than

and Airquest

If you have no continuity and the temperature is below 155°F

Williams P321826 Limit Switch including the 243-8 and 243-12The Williams P321826 Limit Switch is a critical safety component designed specifically for Monterey Counterflow Top Vent Furnaces, including the 250, 350, and 500 series. As a veteran technician knows, maintaining the integrity of the vent safety shutoff system is non negotiable for preventing flue gas spillage and potential carbon monoxide hazards. This replacement vent limit switch is engineered to monitor exhaust temperatures and will break the