I. Series Overview
The Extra-Large Series is Copeland's ZR series high-power scroll compressor product line designed for 20 HP to 30 HP applications. It covers three model grades: ZR250KC-TWD, ZR310KC-TWD, and ZR380KC-TWD. All models feature three-phase 380-420V/50Hz power supply (compatible with 460V/60Hz), making them suitable for ultra-high-capacity applications such as large commercial complexes, industrial refrigeration systems, large chillers, and district cooling. This series represents the pinnacle of performance for ZR scroll compressors, embodying the highest level of Copeland scroll technology in the high-capacity segment.
| Feature Dimension | Description |
| Power Range | 20 HP – 30 HP |
| Cooling Capacity Range | 60,000 W – 111,000 W |
| Refrigerant | R22 |
| Power Supply | Three-phase 380-420V/50Hz (compatible with 460V/60Hz) |
| Core Positioning | Ultra-High Displacement, Industrial-Grade, Flagship Choice |
II. Full Series Parameter Comparison Table
| Model | Nominal HP | Cooling Capacity (W) | Cooling Capacity (Btu/h) | Input Power (W) | Current (A) | COP | Displacement (cc/Rev.) | Displacement (m³/h) | Oil Charge (L) | Net Weight (kg) | LRA (A) | Noise (dBA) |
| ZR250KC-TWD | 20 | 60,000–73,500 | 204,000–249,900 | 17,700–21,700 | 29.6–30.5 | 3.37 | 325.2 | 56.57 | 4.67 | 139.3 | 225.0 | 83.0–88.0 |
| ZR310KC-TWD | 25 | 74,000–89,500 | 253,000–306,000 | 22,000 | 37.9 | 3.31–3.37 | 410.6 | 71.43 | 6.80 | 160.1 | 272.0 | 85.0–90.0 |
| ZR380KC-TWD | 30 | 92,500–111,000 | 315,000–379,000 | 26,500 | 45.1 | 3.40 | 502.7 | 57.5 | 6.30 | 176.9 | — | — |
III. Detailed Model Overview
The ZR250KC-TWD is the 20 HP workhorse of the Extra-Large Series, featuring a displacement of 325.2 cc/Rev. (56.57 m³/h), cooling capacity of 60,000–73,500 W (204,000–249,900 Btu/h), input power of 17,700–21,700 W, current of 29.6–30.5 A, and COP of 3.37. It has a 4.67 L oil charge, 139.3 kg net weight, 225.0 A locked rotor current (LRA), and noise level of 83.0–88.0 dBA. It operates on three-phase 380-420V/50Hz power (compatible with 460V/60Hz) and is designed for R22 refrigerant.
This model is widely used in air conditioning, industrial cooling, and precision AC applications, suitable for systems ranging from split ACs and rooftop units to chillers. Copeland Scroll™ axial and radial compliance technology ensures excellent reliability and high efficiency. Its low oil circulation rate and superior liquid slug resistance guarantee stable operation under complex working conditions. For 20 HP class applications such as large commercial AC, industrial cooling systems, precision AC, and chillers, the ZR250KC-TWD provides ample cooling reserve and outstanding operational economy with 73.5 kW robust capacity and a high 3.37 efficiency ratio.
The ZR310KC-TWD is the 25 HP high-power model of the Extra-Large Series, with a displacement of 410.6 cc/Rev. (71.43 m³/h), cooling capacity of 74,000–89,500 W (253,000–306,000 Btu/h), input power of 22,000 W, current of 37.9 A, and COP of 3.31–3.37. It features a 6.80 L oil charge, 160.1 kg net weight, 272.0 A LRA, and noise level of 85.0–90.0 dBA. It operates on three-phase 380-420V/50Hz power (compatible with 460V/60Hz) and is designed for R22 refrigerant.
Compared to the ZR250KC, cooling capacity increases by approximately 22%, delivering a significant boost in refrigeration capability. This model is widely used in large commercial AC, split ACs, rooftop units, unitary systems, and chiller systems. Copeland Scroll™ axial and radial compliance technology ensures excellent reliability and high efficiency. Its ultra-large displacement of 410.6 cc/Rev. makes it the ideal power core for high-capacity commercial air conditioning.
The ZR380KC-TWD is the flagship model with the highest power rating in the ZR series, featuring an ultra-large displacement of 502.7 cc/Rev., 30 HP nominal power, cooling capacity of 92,500–111,000 W (315,000–379,000 Btu/h), input power of 26,500 W, current of 45.1 A, and a leading COP of 3.40. It has a 6.30 L oil charge and 176.9 kg net weight. It operates on three-phase 380-420V/50Hz power (compatible with 460V/60Hz) and is designed for R22 refrigerant.
As the top-tier product of the ZR series, the ZR380KC-TWD is engineered for the most demanding large-scale commercial applications, delivering 502.7 cc/Rev. displacement and 30 HP maximum power. This model is widely used in special air conditioning systems ranging from split ACs and rooftop units to chillers. Copeland Scroll™ axial and radial compliance technology ensures excellent reliability and high efficiency. It is ideal for ultra-high-capacity applications such as large commercial complexes, industrial refrigeration systems, and large chillers. For applications requiring over 100 kW of cooling, the ZR380KC-TWD is the ultimate solution within the ZR series.
IV. Application Scenario Quick Selection Guide
| Application Scenario | Recommended Model | HP | Key Advantage |
| Large commercial AC (20 HP) | ZR250KC-TWD | 20 HP | 73.5kW, COP 3.37 |
| Large commercial AC / Industrial cooling (25 HP) | ZR310KC-TWD | 25 HP | 89.5kW, ultra-high displacement |
| Industrial refrigeration / Chillers (30 HP) | ZR380KC-TWD | 30 HP | 111kW, COP 3.40, flagship choice |
| Large commercial complexes / District cooling | ZR380KC-TWD | 30 HP | Ultra-high capacity, industrial-grade reliability |
Selection Tip: For 20 HP, choose ZR250KC-TWD (mainstay choice); for 25 HP, choose ZR310KC-TWD (high-capacity upgrade); for 30 HP, choose ZR380KC-TWD (flagship choice).
V. Frequently Asked Questions (FAQ)
Q1: What are the noise levels of these compressors?
A: The ZR250KC-TWD has a noise level of 83.0–88.0 dBA, and the ZR310KC-TWD ranges from 85.0–90.0 dBA. As high-power commercial compressors, their noise levels are higher than smaller units and typically require soundproof equipment rooms or acoustic enclosures. Copeland scroll compressors operate over 5 decibels quieter than reciprocating compressors, featuring a smooth sound spectrum and (smooth sound quality).
Q2: Which large-scale projects are the Extra-Large Series compressors suitable for?
A: They are suitable for ultra-high-capacity applications such as large commercial complexes, industrial refrigeration systems, large chillers, district cooling, and data center cooling. Through multi-unit parallel operation, they can provide solutions for chiller systems with capacities up to 700 kW.
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IV. Application Scenario Quick Selection Guide
