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ensuring the system draws current in manageable increments
System Longevity: Helps prevent compressor failure by ensuring only vaporized refrigerant returns through the suction line
Design Flexibility: Eliminates the need for vertical chimney liners
What is the purpose of the manual adjustment screw
Trane CNT4991 Pressure Switch 318172-701 ensuring the system draws currentThe 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