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 

2. ---

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

5. ---

6. Power Supply
7. Nominal Voltage: 200-240 Vac, 1P2W+PE
8. Frequency: 50/60 ± 3 Hz
9. Input Connection Type: NEMA 6-15P, Top inlet

10. ---

11. Mechanical
12. Valve Type: 2-way valve, FC type
13. Fan Type: EC
14. Fan Quantity: 4 
15. Water Leakage Detector: 4m length

16. ---

17. Deployment
18. Rated Power Consumption (Rating Input Power):
    D30: 0.44 kW
    D50: 0.67 kW
19. Rated Water Flow:
    D30: 55 LPM
    D50: 90 LPM
20. Piping Connection: Top/ Bottom
21. Piping Size:
    D30: 1 inch
    D50: 1 1/4 inch

22. ---

23. Communication Interface
24. Display: LCD display with LED indicators
25. Port: MODBUS (RS-485), Remote On/Off input dry contact, Fire alarm input dry contact, Total alarm output dry contact

26. ---

27. Physical
28. Dimensions (W x D x H): 23.6 x 13.6 x 77.4 in (600 x 345 x 1970 mm) 
29. Net Weight:
    D30: 198 lb (90 kg)    
    D50: 216 lb (98 kg)
30. Compatible Rack - Height: 2000/ 2200 mm
31. Compatible Rack - Width: 600/ 800 mm

32. ---

33. Environment
34. Inlet Chiller Water Temperature:
    54 °F (12 °C) (recommended) to 68 °F (20 °C)⁽³⁾ 
    Inlet chiller water temperature should be higher than dew point temperature
35. Maximum Operating Pressure: 10 bar (145 psi)
36. Maximum CW Flow Rate:
    D30: 82 LPM (PICV 69 LPM)
    D50: 122 LPM (PICV 108 LPM)

37. ---

38. Conformance
39. Safety: CE, UL⁽⁴⁾

40. ---

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

51. ---

52. (1) Conditions for D30 rated capacity at return air: 108 °F (42 °C), Inlet water 54 °F (12 °C) and outlet water 68 °F (20 °C )
    (2) Conditions for D50 rated capacity at return air: 122 °F (50 °C), Inlet water 54 °F (12 °C) and outlet water 68 °F (20 °C )
    (3) Over 54 °F (12 °C) requires cooling capacity derating
    (4) UL provided upon request
53. All specifications are subject to change without prior notice.