Trane SWT3221 Pressure switch 321702-401 For automated temperature regulation
Baker’s notes & crumb story
Description
For automated temperature regulation
which is the most efficient method for economizer operation
it is about protecting the integrity of the HVAC system and ensuring long-term boiler performance under high-demand cycles
Safe Operation: Meets original factory specifications for resistance and amperage draw
Trane SWT3221 Pressure switch 321702-401 For automated temperature regulationThe 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