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Capacity Continuous Adjustment Air Cooled Screw Chiller With Chiller Manage System
The unit adopts a brand new economizer circulation design.
The electronic expansion valve implements precision
control,increasing the over-cooling degree of the unit, and greatly
improving the cooling capacity and cooling efficiency of the unit.
General Specifications
Environmental Friendly-EKAS is an air cooled screw chiller which use dual screw compressor with R134a refrigerant
High Efficiency-The “Apollo”/“Apollo+” stands for high efficiency/ extremely high efficiency on partial and full load operation , thanks to dual screw compressor , sub-cooling design , M shape condenser ,economizer , shell and tube evaporator ,electronic expansion valve and patent aerofoil aluminum fan .
Capacity Continuous Adjustment -With intelligent controller , EK chiller performs a prompt adjustment according to system load to ensure the precisely chilled water temperature . What’s more , it will unload automatically at extremely high ambient temperature to protect compressor.
10.1” Touch Screen -is directly connected to the microprocessor , providing monitoring history data recording ,safety protection ,and more convenient operation .
Widely Applications -EKAS is the idea solution for commercial building & industrial applications that required high performance ,continuous operation , lower operation and maintenance cost .
BMS (Optional)-EK provide an RS485 standard communication interface , which is more convenient to joint with building management system . Standard protocol includes BacNet ,Modbus and Lonwork .
Chiller Manage System (Optional)- EK provide intelligent CMS for centralized control on several air cooled screw chillers to balance each unit running time ,and perform automatically switchover on a fault unit , ensuring the whole system stable running & energy saving .
Model | EKAS280 | EKAS300 | EKAS320 | EKAS340 | EKAS380 | EKAS400 | ||||
Cooling capacity | kW | 1005.7 | 1097.6 | 1168.3 | 1239 | 1367.3 | 1439.1 | |||
USRT | 286 | 312.1 | 332.2 | 352.3 | 388.8 | 409.2 | ||||
×104 kcal/h | 86.5 | 94.4 | 100.5 | 106.6 | 117.6 | 123.8 | ||||
Heating capacity | kW | 957 | 1045.2 | 1111.8 | 1178.5 | 1297.8 | 1360.5 | |||
USRT | 272.1 | 297.2 | 316.1 | 335.1 | 369 | 386.8 | ||||
×104 kcal/h | 82.3 | 89.9 | 95.6 | 101.3 | 111.6 | 117 | ||||
Cooling power input | kW | 291.8 | 310.4 | 331.6 | 352.9 | 387.3 | 404.7 | |||
Heating power input | kW | 283.7 | 313.7 | 330.7 | 347.8 | 383.8 | 403.2 | |||
COP | 3.45 | 3.54 | 3.52 | 3.51 | 3.53 | 3.56 | ||||
Capacity modulation | 12.5%~100% stepless | |||||||||
Startup type | Y-Δ | |||||||||
Power supply | 380V/3~/50Hz | |||||||||
Refrigerant | Type |
| R134a | |||||||
Refrigerant circuits | 2 | 2 | 2 | 2 | 2 | 2 | ||||
Control stratage | E-EXV | |||||||||
Compressor | type |
| Semi-hermetic dual screw compressor | |||||||
Qua. |
| 2 | 2 | 2 | 2 | 2 | 2 | |||
Lubricating oil | code |
| EK02 | |||||||
charge |
| 25+25 | 25+25 | 25+25 | 25+25 | 25+25 | 25+25 | |||
Fan | type |
| Axial | |||||||
Qua. | No. | 20 | 24 | 24 | 24 | 28 | 32 | |||
air flow | ×104m3/h | 40 | 48 | 48 | 48 | 56 | 64 | |||
Air side heat exchanger | type |
| Coil | |||||||
density | 16FPI | |||||||||
Water side heat exchanger | type |
| shell & tube | |||||||
cooling flow | m3/h | 173.0 | 188.8 | 200.9 | 213.1 | 235.2 | 247.5 | |||
pressure drop | kPa | 62 | 77 | 77 | 86 | 86 | 64 | |||
heating flow | m3/h | 164.6 | 179.8 | 191.2 | 202.7 | 223.2 | 234.0 | |||
connection | inch | 8 | 8 | 8 | 8 | 8 |
| |||
Rated current | A | 510 | 557 | 579 | 601 | 678 | 721 | |||
Startup current | A | 660 | 660 | 660 | 749 | 882 | 882 | |||
Max.Startup current | A | 733 | 757 | 824 | 999 | 999 | 1109 | |||
Dimensions | length | mm | 11600 | 12500 | 12500 | 12500 | 14300 | 16100 | ||
width | mm | 2260 | 2260 | 2260 | 2260 | 2260 | 2260 | |||
height | mm | 2525 | 2525 | 2525 | 2525 | 2525 | 2525 | |||
Chiller shipping weight | kg | 10846 | 11399 | 11449 | 11459 | 12857 | 14201 | |||
Chiller operating weight | kg | 11326 | 11879 | 11929 | 11959 | 13357 | 14801 | |||
Heatpump shipping weight | kg | 11094 | 11647 | 11697 | 11707 | 13105 | 14449 | |||
Heatpump operating weight | kg | 11574 | 12127 | 12177 | 12207 | 13605 | 15049 |
Standard Accessories:
Water Y filter | Spring vibration isolator |
Water flow Switch | Evaporator water side victaulic |
Options (on request)
Low-ambient temperature type | Annual heat pump type |
Anti-erosive aluminum fin | Compressor silencer box |
Soft start | Remote touch screen controller |
CMS(Chiller Manage System) | Monitoring software |
Flange connection | Gateway for Modbus, Lonworks, and BACnet |
EC fan motor , Higher ESP fan motor | Condenser guard grille |
Controller:
Partial running information: | Partial alarm information: |
Unit running status | Over/under voltage protection |
Unit capacity | Phase sequence protection |
Compressor running status | Comp high/low pressure protection |
Water pump running status | Comp overload protection |
E-EXV running status | Fan motor overload protection |
Inlet/outlet water temperature | Oil filter block protection |
Comp suction/discharge pressure | High discharge temperature protection |
Comp suction/discharge temperature | Anti freeze protection |
Oil pressure/temperature | Pressure transducer/Temperature sensor trouble |
Partial function: | |
Factory/Service/User password | POST (Power on self test) |
7 days timer | Inlet/outlet water temperature control |
Outlet water temperature setting | Unit running auto/manual control |
Comp delay start | Comp start time setting |
Partial start | Comp energy management |