maintaining consistent CFM and improving indoor air quality

and other 1k ohm PTC-compatible digital electronic controllers

allowing the system to react instantly to dynamic load changes

Bi-directional flow capability allows for versatile installation in heat pump or complex refrigeration cycles

specifically frequently appearing in AE4-1392 series configurations requiring a 1-1/8" sweat discharge

Trane CNT4991 Pressure Switch R-410A maintaining consistent CFM and improvingThe Trane CNT4991 is a 10 inch SPST pressure switch engineered for precise atmospheric monitoring in high efficiency Trane and American Standard HVAC systems. This OEM air pressure switch features a single pole single throw (SPST) contact configuration, rated at 0. 1" WC (water column) for low pressure detection. It is designed to interrupt or complete the 24V control circuit (rated at 28 VA) when specific airflow or flue gas pressure thresholds are