Lochinvar & A.O. Smith 100109925 Switch 323080-701 the 78F90 features a 1/2-inch

the 78F90 features a 1/2-inch x 2

specifically tuned for constant-speed condenser fan blades to maximize heat exchange efficiency

making it suitable for most fan and heater interlock circuits

Built to withstand demanding boiler environments

Flexible Mounting: Includes a heavy-duty L-bracket

Lochinvar & A.O. Smith 100109925 Switch 323080-701 the 78F90 features a 1/2-inchThe Lochinvar & A. O. Smith 100109925 Blocked Inlet Switch is a critical safety component designed for high efficiency gas fired boilers and commercial water heaters. This normally closed (NC) pressure switch is calibrated to a 1. 0 inch water column set point, ensuring the combustion blower maintains proper airflow for safe ignition. If the intake system encounters excessive static pressure due to blocked air intake pipes, debris in the mesh screen,