Lochinvar & A.O. Smith 100109951 Pressure Switch 321894-706 ensuring robust switching reliability across

ensuring robust switching reliability across four separate single-pole double-throw (SPDT) circuits

This valve is built with a brass body and copper stubs to facilitate high-integrity brazed joints

verify Section IV thermal relief requirements

Is this sensor compatible with my existing BAS controller

Lochinvar & A.O. Smith 100109951 Pressure Switch 321894-706 ensuring robust switching reliability acrossWhen you are troubleshooting a pressure switch failure on a high efficiency hydronic system, the Lochinvar & A. O. Smith 100109951 is the specific OEM replacement part required to restore precise combustion air pressure monitoring. This air pressure switch is factory calibrated for the BTN 200 366 series water heaters and boilers, ensuring that the blower is moving sufficient air for safe ignition. As a normally open (NO) switch with a set point of 2.