RDHx, CoolDoor

Rear Door Heat Exchanger

Delta CoolDoor is the ideal solution for high-power-density racks. With EC fans ensuring reliability and efficiency, it removes heat at the source, preventing hot air in the room. No need for added footprint or raised floor, the CoolDoor saves space and reduces CAPEX. The turbo boost dissipates heat from neighboring racks, and the leakage detection ensures high reliability. Elevate your data center performance with Delta CoolDoor!
Rear Door Heat Exchanger (RDHx), CoolDoor 30/50 kW Complete System
 

Product available regions :

EMEA North America Latin America SEA & OCEA India China Taiwan South Korea Japan
• • • •         •

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

Unparalleled Reliability

  • Built-in MCU precisely controls water and air flow for accurate temperature management
  • Ensures chiller system stability during power recovery with a two-way ball valve design post-emergency shutdown
  • Turbo boost control ensures uninterrupted operation by utilizing adjacent RDHx during ball valve or fan failure
  • Enhances equipment protection with 4m water leakage detection and integrated cut-off valve (option) to minimize potential damage
  • Integrated ATS (optional) for continuous operation
  • Elevates security with lockable access door
 

Efficient Use of Space and Energy

  • No hot aisle containment needed
  • Low profile design mounts seamlessly on the rear of the rack, saving valuable space
  • Enhance energy savings with an adjustable fan speed (30-100%) and high-efficiency EC fan
 

Easy Management

  • LCD screen and LED indicators for onsite monitoring system status and control
  • Empowers remote monitoring through input dry contact and external RTU device
  • Tailor-made ducts, perfect for all rack types
  • Hot-swappable fans and sensors allow for quick and easy maintenance
  • Flow control valve (optional) delivers high cooling availability and control

 

Specifications
  1. Model
  2. D30, D50 
  4. Cooling Capacity:
    • D30: 30 kW(1)
    • D50: 50 kW(2)
  5. Rated Air Flow:
    • D30: 3812 CFM
    • D50: 4016 CFM
  7. Physical
  8. Compatible Rack Heights: 42-60U
  9. Compatible Rack Widths: 600-800 mm
  10. Dimensions (W x D x H): 600 x 345 x 1970 mm
  11. Net Weight 
    • D30: 90 kg
    • D50: 98 kg
  13. Deployment
  14. Inlet Chiller Water Temperature
    12°C (recommended) to 20°C(3)
    Inlet chiller water temperature should be higher than dew point temperature
  15. Maximum Operating Pressure: 10 bar (145 psi)
  16. Maximum CW Flow Rate 
    • D30: 82 LPM (PICV 69 LPM)
    • D50: 122 LPM (PICV 108 LPM)
  17. Rated Water Flow
    • D30: 55 LPM
    • D50: 90 LPM
  18. Piping Connection: Top/ Bottom
  19. Piping Size
    • D30: 1 inch
    • D50: 1 1/4 inch
  21. Power Supply
  22. Nominal Voltage: 200/ 208/ 220/ 230/ 240 Vac, 1P2W+PE
  23. Frequency: 50/60 Hz
  24. Input Connection Type: NEMA 6-15P
  25. Rated Power Consumption
    • D30: 0.44 kW
    • D50: 0.67 kW
  26. Power Feed Location: Top
  28. Mechanical
  29. Valve Type: 2-way valve, FC type
  30. Fan Type: EC
  31. Fan Quantity: 4
  32. Water Leakage Detector: 4m length
  34. Communication Interface
  35. Display: LCD display with LED indicators
  36. Port: Modbus RTU (RS-485), Remote On/Off input dry contact, Fire alarm input dry contact, Total alarm output dry contact
  38. Conformance
  39. Safety: CE, UL(4)
  41. Features
  42. Standard
    ▪️ Leak Detection
  43. Optional
    ▪️ Dual Power Feeds
    ▪️ Cut-off Valve (Isolate Leakage RDHx)
    ▪️ T/RH Sensor-Cold Side Dew Point Monitoring
    ▪️ PICV Valve
    ▪️ Air Static Pressure Sensor
    ▪️ Quick Disconnect Couplings
    ▪️ BACnet
    ▪️ SNMP Card
  45. (1) Conditions for D30 rated capacity at return air: 42°C, Inlet water 12°C and outlet water 20°C
    (2) Conditions for D50 rated capacity at return air: 50°C, Inlet water 12°C and outlet water 20°C
    (3) Over 12°C requires cooling capacity derating
    (4) UL provided upon request
  46. All specifications are subject to change without prior notice.
 

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