Trane SWT3221 Pressure switch 321702-401 Its low-pressure switch logic provides

Its low-pressure switch logic provides reliable protection against loss of charge or coil freeze-ups

reducing harmonic vibration

For automated temperature regulation

This switch is calibrated as a high pressure switch with an opening pressure of 303 PSI

Trane SWT3221 Pressure switch 321702-401 Its low-pressure switch logic providesThe Trane SWT3221 Pressure Switch is an essential safety component designed for precise furnace draft inducer motor monitoring. Calibrated to a 1. 4" WC set point, this SPST pressure switch ensures the combustion blower is moving sufficient air to safely vent flue gases before allowing the ignition sequence to proceed. It features 1 4" barb connections for secure pneumatic tubing attachment and is built to withstand the high temperature environment of