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For this SPST limit switch
Compare your reading against the manufacturer's resistance temperature chart
Common signs include the inducer motor running without ignition
Designed with a NEMA 1 splice box and high-performance leaded termination
which is essential for accurate aquastat control and BAS system monitoring
Lochinvar & A.O. Smith 100170642 Temp Sensor Els PW 17895 For this SPST limit switchThis Lochinvar & A. O. Smith 100170642 Temp Sensor is a critical OEM replacement part designed for high efficiency hydronic systems and commercial water heaters. As a direct successor to the TST30011, this flue temperature sensor (also cross referenced as 100170536 and TST20008) provides real time thermal monitoring of exhaust gases. When installed in Knight XL boilers or A. O. Smith power vented units, it communicates vital data to the control board
