Technical Reliability: Rated for 208-230V applications

For technicians retrofitting older pneumatic systems or maintaining existing hydronic loops

Common Questions What is the compatible stroke length for the MCP-6001

or a loud rattling noise

this plug-in transformer eliminates the need for complex hardwiring

Lochinvar & A.O. Smith 100109935 Flue Switch 322838-754 Technical Reliability: Rated for 208-230VMaintain the exhaust integrity and operational safety of your high efficiency heating systems with the Lochinvar & A. O. Smith 100109935 Flue Switch. As a critical safety component, this blocked flue pressure switch is engineered to detect vent obstructions and immediately signal the control board to terminate the ignition cycle, preventing hazardous flue gas recirculation. This genuine OEM part is the designated 100109935 replacement for 9004550215,