LGSCentral Cooling Plant
LGS Series Large Chiller
High-capacity central cooling · efficient, stable, dependable
High-capacity central cooling plant for production lines and large process-cooling duties.
- Cooling capacity52~825kW
- Temperature range5℃ / -25℃ – RT
- Control systemPLC control
- HMI7-inch colour touchscreen
- CommunicationRS485 Modbus RTU
Overview
The LGS large chiller pairs screw compressors with a PLC controller for precise control and real-time display. Two bands are offered, 5℃–RT and -25℃–RT, covering 52 to 825 kW, with DN50–DN150 chilled- and cooling-water connections. The powder-coated enclosure sits on a channel-steel base as an integrated skid, suited to central plant and large process-cooling duties.
Features
- 01Energy-efficient, stable and dependable
- 02Modular design for flexible combination
- 03Suited to large process-cooling duties
- 04Comprehensive unit protection and phase monitoring
Typical Applications
- Central cooling for production lines
- Process chilled-water systems
- Large cooling plant for pharma and chemical sites
- Process cooling in manufacturing workshops
Working Principle
Model Designation
DLS—B0.5WN
- 1. Product series code
- 2. Temperature code: A -10℃–RT, B -25℃–RT, C -40℃–RT; 5℃–RT is not marked
- 3. Capacity code: cooling capacity at 5℃ above the minimum outlet temperature, e.g. 0.5 kW at -20℃. For industrial and precision chillers it is the capacity at a 20℃ outlet; for screw chillers it is the compressor code
- 4. Condensing: W for water-cooled; air-cooled is not marked
- 5. Non-standard code: see the non-standard code rules; omitted if not required
Specifications
Data taken from the GPTECH product catalogue. Contact us for other models or custom specifications.
SpecificationsLGS Series 5℃–RT
| Model | LGS-100W | LGS-140W | LGS-180W | LGS-230W | LGS-300W | LGS-370W | LGS-470W | LGS-580W | LGS-710W | |
|---|---|---|---|---|---|---|---|---|---|---|
| Main application | Process cooling source for pharmaceutical, chemical and machinery production | |||||||||
| Temperature range | 5℃–RT | |||||||||
| Cooling capacity kW | 20℃ | 105 | 146 | 191 | 255 | 325 | 410 | 545 | 680 | 825 |
| 5℃ | 85 | 120 | 155 | 210 | 270 | 340 | 450 | 560 | 680 | |
| Compressor HP | 31 | 41 | 55 | 69 | 89 | 108 | 141 | 175 | 208 | |
| Chilled water | Flow m³/h | 17 | 25 | 32 | 45 | 55 | 70 | 90 | 110 | 135 |
| Port size | DN50 | DN65 | DN65 | DN80 | DN80 | DN100 | DN125 | DN125 | DN150 | |
| Cooling water | Flow m³/h | 22 | 33 | 42 | 60 | 70 | 90 | 120 | 140 | 175 |
| Port size | DN65 | DN65 | DN80 | DN100 | DN100 | DN125 | DN125 | DN150 | DN150 | |
| Control system | PLC controller for precise control and real-time temperature display | |||||||||
| Controlled variable | Chilled-water outlet temperature; external tank temperature optional | |||||||||
| Communication | RS485 interface as standard, Modbus RTU protocol | |||||||||
| External inputs | External temperature sensor port, USB data port | |||||||||
| Temperature feedback | PT100 feedback on the heat-transfer medium (inlet and outlet temperature) | |||||||||
| HMI | 7-inch colour touchscreen, Chinese/English UI, intuitive operation, displays and logs temperature curves and test data | |||||||||
| Protection | Real-time status display and automatic fault diagnosis with multi-level alarms: compressor overload, high/low refrigerant pressure, oil pressure differential, water cut-off, over-current, over-temperature, temperature module fault, under/over voltage, phase loss and phase sequence. | |||||||||
| Refrigerant | Type | R22/R407C | ||||||||
| Charge kg | 18.5 | 25 | 33 | 42 | 55 | 65 | 85 | 105 | 125 | |
| Dimensions cm | 235×65×130 | 245×65×130 | 255×70×135 | 265×75×140 | 275×85×145 | 305×85×150 | 310×95×155 | 330×105×170 | 350×110×175 | |
| Unit weight kg | 830 | 950 | 1100 | 1550 | 1850 | 2050 | 2550 | 2950 | 3400 | |
| Operating weight kg | 915 | 1050 | 1200 | 1750 | 2050 | 2250 | 2800 | 3250 | 3700 | |
| Enclosure | Powder-coated cold-rolled steel panels, channel-steel base, integrated assembly | |||||||||
| Power supply ph/v/Hz | 3/380/50 | |||||||||
※ Notes
- Cooling capacities are based on 20℃ cooling-water inlet temperature; air-cooled units at 20℃ ambient.
- Flow and head figures apply to water at 20℃; pump performance varies with the density and temperature of the medium.
- Only part of the product range is listed. For other models or customised requirements please contact our sales team. Specifications are subject to change without notice.
SpecificationsLGS Series -25℃–RT
| Model | LGS-100DW | LGS-140DW | LGS-180DW | LGS-230DW | LGS-300DW | LGS-370DW | LGS-470DW | LGS-580DW | LGS-710DW | |
|---|---|---|---|---|---|---|---|---|---|---|
| Main application | Process cooling source for pharmaceutical, chemical and machinery production | |||||||||
| Temperature range | -25℃–RT | |||||||||
| Cooling capacity kW | -10℃ | 52 | 72 | 94 | 125 | 160 | 200 | 265 | 335 | 400 |
| -20℃ | 35 | 45 | 60 | 80 | 100 | 130 | 175 | 220 | 260 | |
| Compressor HP | 31 | 41 | 55 | 69 | 89 | 108 | 141 | 175 | 208 | |
| Chilled water | Flow m³/h | 17 | 24 | 30 | 42 | 55 | 70 | 90 | 115 | 135 |
| Port size | DN50 | DN65 | DN65 | DN80 | DN80 | DN100 | DN125 | DN125 | DN150 | |
| Cooling water | Flow m³/h | 20 | 28 | 40 | 50 | 60 | 85 | 100 | 130 | 150 |
| Port size | DN50 | DN65 | DN80 | DN80 | DN80 | DN125 | DN125 | DN150 | DN150 | |
| Control system | PLC controller for precise control and real-time temperature display | |||||||||
| Controlled variable | Chilled-water outlet temperature; external tank temperature optional | |||||||||
| Communication | RS485 interface as standard, Modbus RTU protocol | |||||||||
| External inputs | External temperature sensor port, USB data port | |||||||||
| Temperature feedback | PT100 feedback on the heat-transfer medium (inlet and outlet temperature) | |||||||||
| HMI | 7-inch colour touchscreen, Chinese/English UI, intuitive operation, displays and logs temperature curves and test data | |||||||||
| Protection | Real-time status display and automatic fault diagnosis with multi-level alarms: compressor overload, high/low refrigerant pressure, oil pressure differential, water cut-off, over-current, over-temperature, temperature module fault, under/over voltage, phase loss and phase sequence. | |||||||||
| Refrigerant | Type | R404A | ||||||||
| Charge kg | 18.5 | 25 | 33 | 42 | 55 | 65 | 85 | 105 | 125 | |
| Dimensions cm | 235×65×130 | 245×65×130 | 255×70×135 | 265×75×140 | 275×85×145 | 305×85×150 | 310×95×155 | 330×105×170 | 350×110×175 | |
| Unit weight kg | 870 | 997 | 1155 | 1630 | 1950 | 2100 | 2650 | 3080 | 3550 | |
| Operating weight kg | 960 | 1100 | 1250 | 1850 | 2150 | 2300 | 2900 | 3400 | 3880 | |
| Enclosure | Powder-coated cold-rolled steel panels, channel-steel base, integrated assembly | |||||||||
| Power supply ph/v/Hz | 3/380/50 | |||||||||
※ Notes
- Cooling capacities are based on 20℃ cooling-water inlet temperature; air-cooled units at 20℃ ambient.
- Flow and head figures apply to water at 20℃; pump performance varies with the density and temperature of the medium.
- Only part of the product range is listed. For other models or customised requirements please contact our sales team. Specifications are subject to change without notice.
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