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the S1-7990-6501 eliminates the compatibility issues often found with universal aftermarket alternatives
the Reznor 146465 is specifically calibrated for the airflow requirements and heat rise of Reznor unit heaters
The 0130F00004 is designed as a vacuum switch to monitor negative pressure generated by the draft inducer at the flue outlet
For HVACR contractors and boiler technicians
If your system requires pressure regulation at the valve
Lennox 79M91 Compressor Freon the S1-7990-6501 eliminates the compatibilityThe Lennox 79M91 is a high performance 7 ton scroll compressor engineered for demanding commercial HVACR applications. Operating on 460V 60Hz 3 phase power, this robust unit delivers a nominal capacity of 83,000 BTUH, making it a reliable choice for Lennox KCA and TSA series rooftop units. As a direct equivalent to the Copeland ZP83KCE TFD 830, it utilizes R 410A refrigerant and Polyolester (POE) oil to ensure optimal lubrication and heat transfer.