Lennox 46K92 Heat Exchanger 326058-758 while the manual override lever

while the manual override lever allows technicians to open the valve for system flushing or emergency bypass without needing electrical power

the Resideo FC40R1102 is specifically engineered to fit within the frame of most third-party return grilles

this specific model is optimized for 115V 60Hz operation

Can I use this switch with a Variable Frequency Drive (VFD)

For heat pump applications where the drier is located in a common line that reverses flow

Lennox 46K92 Heat Exchanger 326058-758 while the manual override leverThe Lennox 46K92 is a critical OEM replacement heat exchanger engineered for specific high efficiency Lennox furnace configurations. For technicians troubleshooting a cracked or compromised secondary or primary cell, this direct replacement part ensures the system maintains its original AFUE rating and structural integrity. Built with heavy duty materials to withstand thermal expansion and contraction cycles, the 46K92 optimizes gas furnace heat