06NW2250S7EA-A00 Screw Air Conditioning Compressor

The 06NW2250S7EA-A00 is a high-capacity 85 HP screw air conditioning compressor engineered for water-cooled central chillers, process fluid skids, and large-scale commercial HVAC plants. Tailored specifically for water-cooled pressure ratios with an optimized built-in volume ratio (Vi = 2.5), it delivers high thermodynamic efficiency under low condensing pressure operating conditions. Equipped with an integrated 1-3/8 in economizer port, this compressor allows liquid subcooling to boost overall cooling capacity while lowering specific power consumption.

Driven by twin-screw rotor profile, the 06NW2250S7EA-A00 screw air conditioning compressor ensures continuous, pulse-free gas delivery with minimal acoustic vibration in indoor mechanical rooms. Premium SKF or NSK rolling contact bearings combined with high-capacity axial thrust bearing assemblies absorb heavy mechanical stresses to prolong operating service intervals. Built-in internal safeguards include a fast-acting check valve to eliminate reverse rotor spinning on shutdown, a fine-mesh oil filter, an internal pressure safety valve, and a discharge muffler.

To match dynamic cooling loads in large commercial facilities, the unit incorporates a dual-solenoid 3-stage unloading system (100% - 66% - 33%), preventing short-cycling and optimizing off-peak energy performance. Driven by a high-efficiency motor with embedded NTC thermistors for winding thermal overload protection, the compressor supports both Star-Delta and Direct-On-Line starting across major international voltage grids. With standard 2-5/8 in suction and 4-1/8 in discharge flanged ports, it simplifies both OEM chiller assembly and field replacement projects.