and TOD controls

always verify your specific model's part list

This component is compatible with standard mineral oils

the F825-0431 features a durable frame designed to withstand repeated cleanings

when installed correctly within a suitable enclosure or junction box using the provided threaded hub

Williams P321826 Limit Switch and TOD controlsThe 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