Lochinvar & A.O. Smith 100170487 Upper Sensor 340155-7026 using anything other than the

using anything other than the 13x16x1/4 dimensions will lead to "blow-by

it is specifically engineered for the internal mounting brackets of the 342 and 345 series units

Every draft inducer assembly includes a high-temperature replacement gasket to eliminate combustion leaks and ensure a gas-tight seal at the mounting flange

by offering continuous flame sensing and pressure switch monitoring to prevent unsafe firing conditions

This non-spring return unit operates on a 24V AC/DC power supply and utilizes floating (3-point) control to modulate dampers and valve assemblies effectively

Lochinvar & A.O. Smith 100170487 Upper Sensor 340155-7026 using anything other than theThe Lochinvar & A. O. Smith 100170487 Upper Sensor (formerly TST1187) is a critical thermistor based component engineered for high precision temperature monitoring in residential and commercial water heaters. As a direct immersion NTC temperature sensor, it provides real time resistance feedback to the control board, ensuring the appliance maintains optimal setpoints while preventing dangerous high limit conditions. This OEM water heater sensor is