Rear Door Heat Exchanger (RDHx), CoolDoor

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: D30 / D50 

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3. Cooling Capacity:
   • D30: 30 kW⁽¹⁾
   • D50: 50 kW⁽²⁾
4. Rated Air Flow:
   • D30: 3812 CFM
   • D50: 4016 CFM

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6. Physical
7. Compatible Rack Heights: 42-60U
8. Compatible Rack Widths: 600-800 mm
9. Dimensions (W x D x H): 600 x 345 x 1970 mm
10. Net Weight 
    • D30: 90 kg
    • D50: 98 kg

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12. Deployment
13. Inlet Chiller Water Temperature
    12°C (recommended) to 20°C⁽³⁾
    Inlet chiller water temperature should be higher than dew point temperature
14. Maximum Operating Pressure: 10 bar (145 psi)
15. Maximum CW Flow Rate 
    • D30: 82 LPM (PICV 69 LPM)
    • D50: 122 LPM (PICV 108 LPM)
16. Rated Water Flow
    • D30: 55 LPM
    • D50: 90 LPM
17. Piping Connection: Top/ Bottom
18. Piping Size
    • D30: 1 inch
    • D50: 1 1/4 inch

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20. Power Supply
21. Nominal Voltage: 200/ 208/ 220/ 230/ 240 Vac, 1P2W+PE
22. Frequency: 50/60 Hz
23. Input Connection Type: NEMA 6-15P
24. Rated Power Consumption
    • D30: 0.44 kW
    • D50: 0.67 kW
25. Power Feed Location: Top

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27. Mechanical
28. Valve Type: 2-way valve, FC type
29. Fan Type: EC
30. Fan Quantity: 4
31. Water Leakage Detector: 4m length

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33. Communication Interface
34. Display: LCD display with LED indicators
35. Port: Modbus RTU (RS-485), Remote On/Off input dry contact, Fire alarm input dry contact, Total alarm output dry contact

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37. Conformance
38. Safety: CE, UL⁽⁴⁾

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40. Features
41. Leak Detection: Standard
42. Dual Power Feeds: Optional
43. Cut-off Valve (Isolate Leakage RDHx): Optional
44. T/RH Sensor-Cold Side Dew Point Monitoring: Optional
45. PICV Valve: Optional
46. Air Static Pressure Sensor: Optional
47. Quick Disconnect Couplings: Optional
48. BACnet: Optional
49. SNMP Card: Optional

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51. (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
52. All specifications are subject to change without prior notice.