Copeland Technology

Product Overview

The Copeland IZSI R404A condensing units are designed for a wide operating envelope, suitable for applications ranging from low to medium temperature cold rooms and showcases. They offer robust and efficient operation from -30°C to 5°C evaporating temperatures.

Key Scroll Attributes

• COP Improvement: Leads to higher annual electrical savings of up to 15% compared to systems with reciprocating compressors.
• Quiet Operation: Features low sound and vibration.
• High Reliability: No complex internal suction and discharge valves.

Low Applied Cost

IZSI units are factory-built with essential accessories, simplifying component sourcing. These include a liquid line filter, sight glass/moisture indicator, liquid line solenoid valve, and electrical contactor.

Simple and Reliable Technology

Powered by Copeland Scroll technology with CoreSense™, these units incorporate Liquid Injection Technology. This technology, managed by CoreSense™, controls discharge temperature for maximum performance and reliability. CoreSense™ can also detect and display sensor failures via LEDs, aiding in troubleshooting. Copeland Scroll compressors have fewer moving parts than reciprocating compressors, contributing to their reliability and ensuring consistent quality through factory-built condensing units.

System Components Diagram

The condensing unit schematic illustrates key components: a Receiver, Filter Drier, Sight Glass, Rotalock Valve with Schraeder Valve for Receiver, Dual Pressure Switch, Terminal Box, ZSI Scroll Compressor, Condenser, EXV (Expansion Valve), and the CoreSense™ DLT Sensor.

EMERSON IZSI CONDENSING UNITS SET UP FOR MEDIUM TEMP COOLROOM

Standard units (STD) include CoreSense™, Electrical Box, CC heater, Filter Drier, Sight Glass, Contactor, Dual Pressure Switch, Receiver with Valve, Fan Motor, Heat Exchanger, Scroll Compressor, and failsafe. Timeclock is an optional component. Conditions are at 38°C ambient.

EMERSON IZSI CONDENSING UNITS SET UP FOR LOW TEMP FREEZER ROOM

LT (Low Temp) versions include STD unit features plus Oil Separator + Accumulator, Service Valve + Contactor, CC Heater, Filter Drier, Sight Glass, Dual Pressure Switch, Receiver with Valve, Fan Motor, Heat Exchanger, and failsafe. Timeclock is an optional component. Conditions are at 38°C ambient.

Prices shown in AUD, excluding GST & shipping. Valid from 5th November until 31st December, 2015. TRADE ONLY. For other terms and conditions, please visit the website.

Quick Select Guide - For Freezer - R404A

Freezer Design Assumptions:

1. Design based on climatic conditions of 35°C ambient.
2. Room temperature: -18°C, evaporating temperature: -23.5°C (5.5K evaporator temperature difference).
3. Condensing temperature: 44°C sct (9K condenser temperature difference).
4. Electrical rating: TFM isolated 415V, 3 phase, 50Hz; PFZ isolated 220/240V, 1 phase, 50Hz.
5. Cold room height: 2400mm.
6. Insulation type and thickness: 150mm polystyrene.
7. Cooling capacity based on heavy usage. Contact Stareast for other load conditions.
8. Equipment selection based on 20hr per day running time.
9. 300kg/day product load at an entering temperature of 4.5°C.
10. Units supplied with suction accumulator, oil separator, and ball valve.

Quick Select Guide - For Coolroom - R404A

Coolroom Design Assumptions:

1. Design based on climatic conditions of 35°C ambient.
2. Room temperature: 1°C, evaporating temperature: -5°C (6K evaporator temperature difference).
3. Condensing temperature: 50°C sct (15K condenser temperature difference).
4. Electrical rating: TFM isolated 415V, 3 phase, 50Hz; PFZ isolated 220/240V, 1 phase, 50Hz; BXXXH isolated 220/240V, 1 phase, 50Hz.
5. Cold room height: 2400mm.
6. Insulation type and thickness: 75mm polystyrene.
7. Cooling capacity based on heavy usage. Contact Stareast for other load conditions.
8. Equipment selection based on 16hr per day running time.

Note: Tables are for general representation. For customized applications (e.g., blast freezing, pull-down, food processing) or non-standard requirements, detailed heat load calculations are necessary. Please contact your nearest Stareast representative.

Performance Data

Capacity and Power (kW) at 50Hz - PFZ/TFM

Notes: 1. Conditions are rated as follows: Return gas temp (°C): 18.33, Subcooling (°C): 2.77. 2. Units are in kilowatts (kW) for Capacity and Power.

Liquid Injection Technology for Efficient Operation

IZSI indoor condensing units are powered by Copeland Scroll compressors featuring Liquid Injection technology for improved performance and reliability. High discharge temperature can cause compressor failure. Liquid Injection, where refrigerant is injected mid-pocket of the scroll, allows the compressor to function similarly to a two-stage compressor. This process lowers discharge line temperature and enhances performance.

Liquid Injection protects the compressor from failure by preventing excessively high discharge temperatures. It also helps provide a wide operating envelope for the unit.

Diagram Description: Two Pressure-Enthalpy (P-H) diagrams illustrate the effect of Liquid Injection. The "With Liquid Injection" diagram shows a cycle where refrigerant is injected during compression, resulting in a lower discharge temperature and potentially improved efficiency compared to the "Without Liquid Injection" diagram, which depicts a standard compression cycle.

Technical Data

Additional Technical Data Details:

• Compressor Details: Model Names (ZSI06KQE to ZSI18KQE), RLA (Rated Load Ampere), LRA (Locked Rotor Ampere), Oil Type (POE), Oil Recharge Volume (Liters).
• Fan Motor Details: Diameter (mm), Fan Speed (rpm), Air Flow (m³/h), Total Fan Motor Power Input (W).

Schematic Diagram

The system schematic illustrates the flow and connection of key components within the IZSI condensing unit. It highlights the integration of the CoreSense™ DLT Sensor with the ZSI Scroll Compressor, Discharge Fitting, Sight Glass, and EXV (Electronic Expansion Valve) connected to the Condenser. The diagram also shows the Receiver, Filter Drier, Dual Pressure Switch, and Terminal Box. The system operates similarly to a 2-stage cycle but is accomplished with a single scroll compressor. Liquid Injection is controlled by the CoreSense module, and the DLT sensor signals the EXV to regulate flow based on the discharge line temperature.