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Symptoms include the system being stuck in one mode (heating or cooling only) or a minimal temperature difference (less than 3°F) between the suction lines
leak-resistant interface compatible with a wide range of Danfoss and Maneurop reciprocating compressors
leak-free brazing into the liquid line
The Rheem-Ruud 51-21964-11 Vent Motor With Blades is the direct OEM replacement for the discontinued 21964K and 51-21964-01 induced draft assemblies
two piston O-rings
Trane CNT4990 Pressure Control 320788-703 Symptoms include the system beingThe Trane CNT4990 is a high precision HVAC air pressure control switch engineered for critical monitoring in residential and light commercial systems. This OEM Trane replacement part features a fixed set point of 0. 26" WC, making it a vital safety component for sensing draft in inducer fan assemblies and ensuring proper airflow before ignition. With its SPST (Single Pole Single Throw) contact configuration, the CNT4990 provides reliable circuit