Note that the 3-5°F differential (closing point) is factory-set and not adjustable

It is specifically compatible with ASCO valve models 8215A090 and 8215A040

5” width) allow for a flush-mount fit on a variety of Carrier thermostat and control board assemblies

This range stop and locking screws assembly allows technicians to set definitive minimum and maximum setpoint limits

Carrier 328270-409 Tube 322055-301 Note that the 3-5°F differentialThe Carrier 328270 409 Tube Pressure Switch is a critical Factory Authorized Part engineered for precise differential pressure monitoring in residential and commercial HVAC systems. This OEM pressure switch tube serves as a direct replacement component, ensuring the induction motor and pressure switch assembly communicate accurate airflow data to the control board. Designed strictly to Carrier HVAC specifications, the 328270 409 maintains the vacuum