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This specific L165-30 furnace limit switch is calibrated to open at 165°F (shuting down the burner) and close at 135°F (resuming operation once temperatures stabilize)
What causes a drain trap like the 1171917 to fail
fitting standard 4-3/4 inch shells
it is not recommended for direct steam contact
If your application requires a 1-1/4" or 1-3/4" thread
Trane SWT2523 Pressure Switch Els PW 17895 This specific L165-30 furnace limitEnsure reliable sequence of operation with the Trane SWT2523 Pressure Switch, a critical OEM safety component for Trane and American Standard gas furnaces. This single pole single throw (SPST) air pressure sensor is factory calibrated to an actuation point of 1. 40" WC (Water Column), meticulously monitoring the draft inducer motor to verify proper combustion venting before the ignition cycle begins. Built with a robust housing and a standard 1 4"
