Product Overview

The Emerson ZR32K5E-TFD-800 is a Copeland ZR series hermetic scroll compressor used in commercial air-conditioning equipment. It is suited to systems that require refrigerant compression for continuous cooling, including packaged air-conditioning units, commercial HVAC installations and light industrial climate-control systems.

This model uses a three-phase, 460 V AC, 60 Hz electrical configuration. Its nominal R-22 cooling capacity is 32,600 Btu/h at an evaporating temperature of 45°F and a condensing temperature of 130°F. Capacity changes with operating conditions and refrigerant selection, so the nominal rating should not be treated as a fixed output under every load.

The compressor uses a scroll mechanism in which an orbiting scroll works against a fixed scroll to compress refrigerant vapor. Suction and discharge stub connections link the compressor to the refrigeration circuit, while the specified polyolester (POE) oil lubricates its internal mechanism. Refrigerant compatibility, piping cleanliness, electrical protection and correct system charging are key considerations when installing this model.

Technical Specifications

Product Features

• Scroll compression mechanism: Uses fixed and orbiting scroll elements to compress refrigerant vapor.
• Air-conditioning application: Supports cooling systems operating within the compressor’s specified performance envelope.
• Three-phase electrical configuration: Uses a 460 V AC, 60 Hz supply.
• Refrigerant compatibility: Supports specified R-22 and R-407C applications.
• Stub pipe connections: Provides separate suction and discharge interfaces for refrigerant piping.
• POE lubrication: Uses polyolester oil to lubricate the internal compression mechanism.
• Internal motor protection: Incorporates inherent motor overload protection in the specified configuration.
• Defined mounting arrangement: Uses a 7.5 × 7.5-inch mounting pattern for compatible equipment.

Working Principle

The ZR32K5E-TFD-800 compresses refrigerant through the movement of two scroll elements. One scroll remains fixed while the other orbits around it, forming enclosed pockets that move toward the center of the assembly. As the pockets decrease in volume, the refrigerant vapor pressure rises before the compressed vapor leaves through the discharge connection.

In an air-conditioning circuit, low-pressure vapor returning from the evaporator enters the compressor through the suction line. The compressor raises the refrigerant pressure and temperature, then sends the vapor to the condenser, where heat is rejected. After passing through the expansion device, the refrigerant returns to the evaporator to absorb heat from the conditioned space.

Operating performance depends on refrigerant type, evaporating and condensing temperatures, return-gas conditions and the overall heat-transfer capacity of the system. For example, the published R-22 capacity is 32,600 Btu/h at one specified rating point and 42,600 Btu/h at another. The actual capacity therefore needs to be considered against the system’s expected operating conditions.

Lubrication and refrigerant management also affect operation. The correct oil charge, clean piping and suitable refrigerant conditions help maintain the scroll mechanism. Abnormal pressure, inadequate refrigerant flow or unsuitable electrical conditions can trigger protective shutdowns or contribute to premature wear.

Role in a Copeland ZR Air-Conditioning System

The compressor drives refrigerant circulation through the air-conditioning circuit. It receives vapor from the evaporator and discharges compressed refrigerant toward the condenser, working with the heat exchangers and expansion device to complete the cooling cycle.

Evaporator → ZR32K5E-TFD-800 Compressor → Condenser → Expansion Device → Evaporator

Industrial Applications

Installation and Maintenance

1. Verify the compressor identification: Confirm the ZR32K5E-TFD-800 model and its electrical and refrigerant configuration before installation.
2. Check the refrigeration application: Confirm that the required cooling capacity, refrigerant and operating conditions match the compressor’s specifications.
3. Inspect the mounting arrangement: Ensure the mounting pattern, supports and isolators are suitable for the equipment.
4. Verify the electrical supply: Check the 460 V three-phase supply, frequency, wiring and protective devices against the electrical requirements.
5. Inspect the refrigerant piping: Confirm that the suction and discharge connections match the system piping and that the lines are clean.
6. Check the lubrication requirements: Verify the specified POE oil type and account for the required oil charge during installation or servicing.
7. Prepare the refrigeration circuit: Follow the applicable procedures for piping cleanliness, leak testing, evacuation and refrigerant charging.
8. Verify refrigerant compatibility: Confirm that the selected refrigerant is suitable for the compressor configuration and the complete refrigeration circuit.
9. Check system protection: Verify the operation and configuration of pressure switches, motor protection and control interlocks.
10. Inspect the electrical connections: Check terminal connections, cable condition, grounding and contactor operation before energizing the equipment.
11. Perform a controlled startup: Monitor suction and discharge pressures, operating current, temperatures and abnormal vibration during initial operation.
12. Record operating conditions: Document the refrigerant type, operating pressures, electrical measurements and maintenance findings for future troubleshooting.

Related Components

Recommended Related Models

Key Advantages

• Uses scroll compression for compatible air-conditioning systems.
• Provides a nominal R-22 capacity of 32,600 Btu/h under specified rating conditions.
• Uses a three-phase, 460 V electrical configuration.
• Supports specified R-22 and R-407C applications.
• Uses POE oil for internal lubrication.
• Provides defined suction, discharge and mounting interfaces for system integration.

Technical FAQs

What cooling capacity does the ZR32K5E-TFD-800 provide?

Its published R-22 capacity is 32,600 Btu/h at 45°F evaporating and 130°F condensing temperatures. Capacity changes with operating conditions and refrigerant selection.

Which refrigerants are compatible with this compressor?

The model specification lists R-22 and R-407C for applicable air-conditioning conditions. The refrigerant must be suitable for the compressor configuration and the complete system.

What electrical supply does the ZR32K5E-TFD-800 require?

The specified configuration uses a 460 V AC, three-phase, 60 Hz supply. Electrical switching and protection components should match the compressor and installation requirements.

What should be checked if cooling performance is low?

Check refrigerant charge, suction and discharge pressures, evaporator and condenser airflow, heat-exchanger condition and operating temperatures. Also verify the electrical supply and compressor operating current under the actual system conditions.