06NA2174S7NA-A00 HVAC Screw Compressor

The 06NA2174S7NA is an 85 HP screw compressor built forcommercial building HVAC units and industrial fluid process cooling. Designed with an optimized built-in volume ratio, it delivers a high displacement of 174 CFM. Its patented rotor profile geometry maintains high compression efficiency and smooth continuous torque when operating with eco-friendly R134a refrigerant.

Engineered to withstand demanding commercial operating cycles, it features premium SKF or NSK rolling contact bearings paired with heavy-duty thrust bearing assemblies, extending maintenance intervals and reducing operational wear. The compressor houses a complete internal protection system, including an internal check valve to prevent rotor reverse rotation at shutdown, a safety pressure relief valve, an internal oil filter to trap circulating contaminants, and an integrated discharge muffler to minimize noise levels.

Driven by an efficient high-strength motor with integrated NTC thermistor temperature sensors, the 06NA2174S7NA supports both Star-Delta (Y-Δ) and Direct-On-Line starting profiles across global electrical supplies. Solenoid-actuated 3-stage capacity unloading allows the compressor to adjust output precisely to match fluctuating cooling demands.