Lennox 79M91 Compressor

The 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. Designed with a 7/8" suction line and a 1/2" discharge, this industrial HVAC compressor features inherent motor protection and a high efficiency rating of 10.8 EER. The scroll design minimizes moving parts, which significantly reduces vibration and mechanical wear compared to traditional reciprocating models. For technicians performing a commercial AC compressor replacement, this OEM component ensures seamless integration with existing controls and refrigerant circuits, maintaining the system's original performance specifications and reliability during continuous heavy-duty operation.

• Universal Compatibility: Serves as a direct replacement for ZP83KCE-TFD-830 and fits over 30 Lennox commercial models.
• Superior Efficiency: Optimized for R-410A with a 10.8 EER rating to manage energy costs in large-scale cooling.
• Extreme Durability: Engineered with a robust internal motor protector to prevent thermal overload and electrical failure.
• Quiet Operation: Advanced scroll technology reduces noise and vibration levels for sensitive commercial environments.

Common Questions

What are the electrical requirements for the 79M91?
This compressor requires a 460-volt, 60 Hz, 3-phase power supply. Always verify the RLA (13.6A) and LRA (100.0A) against the system nameplate before installation.

Can this compressor be used with systems originally running R-22?
No, the Lennox 79M91 is specifically designed for R-410A refrigerant and POE oil. It is not a drop-in replacement for R-22 systems due to pressure and lubricant differences.

What is the proper oil type for the ZP83KCE-TFD-830?
This unit is factory-charged with Polyolester (POE) oil. Ensure the system is flushed and a new filter drier is installed to prevent contamination from moisture or residual mineral oil.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.