protecting the vessel from dry-fire or overheating

It’s a practical choice for maintaining optimal damper control without extensive modifications

Key Benefits Dual-Function Reliability: Integrated LWCO and pump control ensures consistent water levels while protecting the burner during low-water conditions

Water Hammer Resistance: The inverted bucket design is inherently resistant to damage from hydraulic shocks

It is a best practice to replace these components during the inducer assembly swap to maintain a gastight seal

Carrier 110000272 Limit Switch 318423-701 protecting the vessel from dry-fireThe Carrier 110000272 Limit Switch is a critical high limit safety component engineered for precise thermal regulation in Carrier, Bryant, and Payne heating systems. This OEM replacement part is calibrated as an L165 40F limit switch, meaning the internal contacts are designed to open at 165F to prevent heat exchanger damage and automatically reset once the temperature drops to 40F. Featuring a robust snap action mechanism and a double break contact