Lochinvar & A.O. Smith 100109522 Switch 320788-702 or flame signal loss using

or flame signal loss using the integrated LED

Before tightening the hub set screw

depending on specific piping vibration and code requirements

Always match the OEM specification of 195 degrees for this application

System Efficiency: Accurate sensing prevents unnecessary HVAC system downtime and optimizes energy consumption

Lochinvar & A.O. Smith 100109522 Switch 320788-702 or flame signal loss usingThe Lochinvar & A. O. Smith 100109522 Pressure Switch is a critical safety component designed for precise pressure monitoring in high efficiency boilers, furnaces, and water heaters. This SPDT pressure switch (Single Pole Double Throw) features a fixed set point, typically calibrated to 0. 95 WC, ensuring that the combustion blower is moving sufficient air before the ignition sequence initiates. As a genuine OEM replacement part, the 100109522 is