Key Benefits Precise Pressure Regulation: Features a 95/115# adjustable pressure range to maintain stable suction pressure and prevent coil frost-up

With an adjustable authority range of 20 to 200% of the primary input signal

the KH-AF-1 offers adjustable stroke lengths to fine-tune the mechanical advantage and ensure full closure or opening of the damper blades

the Nordyne 1046528 is the official manufacturer-designated replacement for 903179

allowing for extended life and minimal resistance

Lochinvar & A.O. Smith 100109973 Switch R-410A Key Benefits Precise Pressure Regulation:The Lochinvar & A. O. Smith 100109973 Blocked Inlet Switch is a critical safety component designed for high efficiency condensing boilers and water heaters. As a normally closed air pressure switch, its primary function is to monitor the intake system for airflow restrictions. If the intake air connection screen becomes clogged or the vent piping is obstructed, the switch detects a fall in pressure and opens the electrical circuit, instantly shutting