Trane SWT3221 Pressure switch 321702-401 it is about protecting the

it is about protecting the integrity of the HVAC system and ensuring long-term boiler performance under high-demand cycles

reducing harmonic vibration

allowing for reliable startups even in challenging ambient conditions

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

For automated temperature regulation

Trane SWT3221 Pressure switch 321702-401 it is about protecting theThe 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