Refcomp SW3H-21000 220HP R410a 460V High Capacity HVAC Screw Refrigeration Compressor
| Energy regulation: | 100%,75%,50%,25%(stepless 100%-25%) | Voltage: | 400V/3/50Hz-460V/3/60Hz |
| Application: | HVAC,Cold Room,Condensing Unit,Air Conditioning | Refrigerant: | R22, R407C, R404A, R507A, R134a, R410A |
| Horse Power: | 220HP/164 KW | Displacement 50/60Hz: | 562/674 M³/hr |
| High Light: | SW3H-21000 R410a screw compressor,220HP 460V refrigeration compressor,high capacity HVAC screw compressor |
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The Refcomp SW3H-21000 is a 220 HP (164 kW) high-capacity screw refrigeration compressor engineered for HVAC and high-temperature refrigeration applications. Built around RefComp's asymmetric screw rotor technology, it delivers smooth, efficient compression with reduced vibration and gas pulsation, making it a dependable choice for demanding chiller systems.
Featuring RefComp's asymmetric screw rotor profile and a 5/6 rotor configuration, the compressor provides precise meshing, effective lubrication and smooth compression. The optimized rotor geometry helps reduce vibration and gas pulsation, supporting efficient operation of the HVAC screw compressor.
The multi-bearing configuration helps accommodate axial and radial loads while reducing mechanical wear and operating noise. High-precision bearings, wear-resistant materials and specialized lubrication contribute to stable operation and long-term mechanical reliability.
The integrated safety valve connects the high- and low-pressure sides, helping prevent excessive internal pressure and providing an additional layer of mechanical protection. This design supports reliable operation under demanding refrigeration conditions.
The built-in discharge check valve features low flow resistance and helps prevent refrigerant backflow when the compressor stops. This helps protect the refrigeration system during shutdown and supports reliable system operation.
| Model | SW3H-21000 |
|---|---|
| Standard Motor Power | 220 HP / 164 kW |
| Displacement (50/60 Hz) | 562 / 674 m³/h |
| Weight | 1030 kg |
| Capacity Regulation | 100%, 75%, 50%, 25% (stepless 100%–25%) |
| Standard Motor | Y/△ – 400/3/50 Hz – 460/3/60 Hz |
| LRA Y/Δ | 564 / 1645 A |
| Max Operating Current | 335 A |
The SW3H-21000 is a 220 HP screw compressor designed for high-temperature refrigeration applications. Selection should consider the required cooling capacity, refrigerant, evaporating and condensing temperatures, cooling medium and electrical supply. These factors help determine whether the HVAC screw compressor matches your project requirements.
R134a is included among the refrigerants listed in the RefComp SW series documentation. An R134a screw compressor configuration can be considered for compatible HVAC chiller applications, subject to confirmation of the selected configuration and actual operating conditions.
Yes. The SW3H series supports four-step capacity regulation at 25%, 50%, 75% and 100%, with optional stepless regulation from 25% to 100%. This allows the compressor to better match its output with changing cooling demand.
Check the suction and discharge piping, refrigerant circuit, oil connections, electrical supply and installation clearance. Proper system matching and sufficient maintenance access help simplify commissioning and routine servicing of a screw compressor for HVAC chillers.
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