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Standard wiring involves connecting terminal 1 for common
Enhanced Diagnostics: Integrated test jacks allow technicians to verify flame signal strength using a standard multi-meter during commissioning or troubleshooting
Improved Efficiency: Minimizes steam bypass and maximizes condensate removal to reduce fuel costs
making it an essential condensate drain line and pressure switch connection for furnace repair and maintenance
Trane SWT3546 Pressure Switch 319847-401 Standard wiring involves connecting terminalThe Trane SWT3546 Pressure Switch (Mfr Part #: SWT03546) is a critical OEM replacement part engineered for precise low side monitoring in Trane and American Standard HVAC units. This single pole, single throw (SPST) switch features a calibrated open pressure of 50 psig and a close pressure of 70 psig, effectively preventing compressor slugging and long term damage due to low refrigerant charge or restricted airflow. Designed for HVAC repair