RoomCool CW, L Series

Room Cooling, Chilled Water

Introducing Delta’s L Series room cooling - engineered for superior reliability and efficiency. This advance chiller offers precise temperature control with intelligent management, energy-efficient EC fans, and ATS. Engineered for high-temperature applications with its advanced heat exchanger design. The Delta L Series combines intuitive controls with superior insulation to deliver optimal performance and protection for your critical cooling needs.



Product available regions :

EMEA North America Latin America SEA & OCEA India China Taiwan South Korea Japan
• L-70/320 • • • • •    

For region-specific product details and variations in specifications, please download the local leaflet or visit the local website.


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Product Introduction

Features & Benefits

Superior System Reliability

  • Intelligent Control: built-in MCU adjusts cooling water and air flow to maintain optimal temperature control
  • Built-in ATS: automatically switch to backup power feed to ensure uninterrupted operation
  • Two-way Ball Valve: stabilizes chilled water flow and prevents fluctuations during power recovery
 

Optimized Energy Efficiency

  • EC Fan: adjustable-speed fan (30-100%) for customized energy savings
  • Double Wall Panel: high-insulation panels reduce heat loss and enhance energy efficiency
  • User-Friendly Touchscreen Control Interface: simplifies system management and monitoring for efficient operation
  Comprehensive Safety Features

  • Alarm System with Smoke Detection: alerts user to system abnormalities and provides early fire warning
  • Water Leakage Detection: immediate alerts for any water leakage to protect equipment
  • Lockable Access Door: tool-required locking mechanism ensures secure access before startup

 

Specifications
  1. Model
  2. L-70, L-90, L-320
  4. Total Cooling Capacity
  5. • L-70: 70 kW(1)
    • L-90: 88.4 kW(2)
    • L-320: 320 kW(3)
  7. Sensible Cooling Capacity
  8. • L-70: 70 kW
    • L-90: 88.4 kW
    • L-320: 320 kW
  10. Airflow Rate 
  11. • L-70: 11500 CFM
    • L-90: 10018 CFM
    • L-320: 54086 CFM
  13. Deployment 
  14. Maximum Water Flow Rate
    • L-70: 133 LPM
    • L-90: 180 LPM
    • L-320: 633 LPM
  15. Maximum Water Pressure Drop
    • L-70: 79.98 kPa
    • L-90: 59.98 kPa
    • L-320: 97.91 kPa
  16. Water Piping Connection
    • L-70: 1 1/2 inch Flange
    • L-90: 1 1/2 inch PT Female
    • L-320: 3 inch NPT Male
  17. Drain Piping Size
    • L-70: 5/8 inch
    • L-90: 3/8 inch
    • L-320: 1 1/2 inch
  18. Fan Type and Quantity
    • L-70/90: EC fan x2
    • L-320: EC fan x10
  19. Air Discharge Direction: Front
  21. Power Supply
  22. Nominal Power Supply Voltage
    • L-70: 460 Vac, 3P3W
    • L-90: 380/400/415 Vac, 3P4W+PE
    • L-320: 460 Vac, 3P4W+PE
  23. Operating Voltage Range
    • L-70: 414-506 Vac
    • L-90: 342-456 Vac
    • L-320: 414-506 Vac
  24. Frequency
    • L-70: 60 Hz
    • L-90: 50/60 Hz
    • L-320: 60 Hz
  25. Maximum Power Consumption
    • L-70: 8.6 kW
    • L-90: 7.2 kW
    • L-320: 20.6 kW
  26. Dual Power Feed: Standard
  28. Physical
  29. Dimensions (W x D x H)
    • L-70: 2134 x 914 x 2896 mm
    • L-90: 1600 x 900 x 2150 mm
    • L-320: 2380 x 5900.4 x 1600.2 mm
  30. Net Weight
    • L-70: 971 kg
    • L-90: 494 kg
    • L-320: 2449 kg
  32. Communication Interface
  33. Display: 10’’ color LCD touchscreen
  34. Port
    • L-70: Modbus TCP (RJ45) x1, Output dry contact x1
    • L-90: Modbus TCP (RS-485) x1, Input dry contact x1, Output dry contact x1
    • L-320: Modbus TCP/IP (RS-485)
  36. Conformance 
  37. Safety
    • L-70/320: UL
    • L-90: CE
  38. Seismic Rating
    • L-70: SDC D
    • L-90/320: GR63 ZONE4
  40. Features
  41. Standard
    ▪️ Leak Detection
    ▪️ Drain Pump: for L-70/90
    ▪️ Pressure Independent Control Valves (PICV): for L-70
  42. Optional
    ▪️ Remote Rack Temperature and Humidity
  44. (1) Cooling Capacity: At 35°C dry bulb, 18.3°C wet bulb, and 21.1°C inlet water
    (2) Cooling Capacity: At 38°C dry bulb, 23.9°C wet bulb, 10°C inlet water and 17°C outlet water
    (3) Cooling Capacity: At EAT/LAT 35.6/23.3°C, EWT/LWT: 18.3/26.1°C
  45. All specifications are subject to change without prior notice.  
 

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