CRCW-12 CRCW-24 Cold Row™ Chilled Water (CW) Engineering Manual This precision data center air-conditioning system uses the latest, state-of-the-artBLACK control BOX technology. ® Customer Support Information Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.
Trademarks Used in this Manual Trademarks Used in this Manual Black Box and the Double Diamond logo are registered trademarks, and Cold Row is a trademark, of BB Technologies, Inc. Armaflex is a registered trademark of Armacell Enterprise GmBH. UL is a registered trademark of Underwriters Laboratories. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners. Page 2 724-746-5500 | blackbox.
Table of Contents Table of Contents 1. About the Cold Row CW.......................................................................................................................................................4 2. Features ...............................................................................................................................................................................5 3. Configurations............................................................................................
Chapter 1: About the Cold Row CW 1. About the Cold Row CW Designed for scalability, reliability, and seamless integration into new or existing data centers; the rack cooling systems are suitable for use in open and contained hot-aisle and cold-aisle configurations. The models covered in this manual are ideal for hot-spot cooling in small- to enterprise-size data centers.
Chapter 2: Features 2. Features Chilled water (CW) is supplied to the Cold Row CW unit via a building chiller or other chilled water plant. Chilled water has high affinity for heat, making it a very efficient cooling method. The E² controller enables independent valve and fan control so the unit can adjust immediately, and precisely, to varying heat loads and optimize energy efficiency. Two models are available: Table 2-1. Available models.
Chapter 2: Features Chiller (Full Capacity or Trim) Cold Row CW Chilled Water Pump Figure 2-1. Traditional cooling example. Chiller Closed Loop Cooling Tower Cooling Tower Pump Cold Row CW Chilled Water Pump Figure 2-2. Hybrid-free cooling diagram. Page 6 724-746-5500 | blackbox.
Chapter 3: Configurations 3. Configurations Open Aisle Configuration Open aisle configuration organizes racks in a single row or in hot and cold aisle rows, but without containment. The Cold Row CW draws hot air from the external environment or hot aisle, removes the heat, and supplies cooled air to the front of IT equipment in the cold aisle.
Chapter 4: Technical Data 4. Technical Data Table 4-1. CW System Technical Data. Model 12" Chilled Water, CRCW-12 24" Chilled Water, CRCW-24 Valve Pressure Rating — psi 400 400 Close-off Pressure Rating — psi 200 200 Valve Pressure Rating — psi 400 400 Close-off Pressure Rating — psi 200 200 4/5.8 4/11.6 500 500 Horsepower (Each) 1/4 H.P. 1-1/4 H.P.
Chapter 5: Performance, Electrical, and Sound Data 5. Performance, Electrical, and Sound Data Table 5-1. Performance Data. 12" Chilled Water (CRCW-12) Temperature Change Total Capacity Sensible Capacity Flow Rate Total System Pressure Drop BTU/H kW BTU/H kW GPM (ft. H2O) 100° F DB/69.2° F WB Entering AIr Temperature 40° F EWT 45° F EWT 50° F EWT 10° F Temperature change 127,008 37.2 125,200 36.7 25.7 18.0 12° F Temperature change 119,461 35.0 119,461 35.0 20.2 12.
Chapter 5: Performance, Electrical, and Sound Data Table 5-1 (continued). Performance Data. 12" Chilled Water (CRCW-12) Temperature Change Total Capacity Sensible Capacity Flow Rate Total System Pressure Drop BTU/H kW BTU/H kW GPM (ft. H2O) 80° F DB/64.5° F WB Entering AIr Temperature 40° F EWT 45° F EWT 50° F EWT 24" Chilled Water (CRCW-24) 10° F Temperature change 81,155 23.8 77,151 22.6 16.6 9.0 12° F Temperature change 72,250 21.2 72,250 21.2 12.3 6.
Chapter 5: Performance, Electrical, and Sound Data Table 5-1 (continued). Performance Data. 24" Chilled Water (CRCW-24) Temperature Change Total Capacity Sensible Capacity Flow Rate Total System Pressure Drop BTU/H kW BTU/H kW GPM (ft. H2O) 90° F DB/66.1° F WB Entering AIr Temperature 40° F EWT 45° F EWT 50° F EWT 10° F Temperature change 221,108 64.7 204,623 59.9 46.2 29.8 12° F Temperature change 207,922 60.9 199,053 58.3 36.2 19.6 10° F Temperature change 177,357 51.
Chapter 5: Performance, Electrical, and Sound Data Table 5-2. Electrical Data. CRCW-12 CRCW-24 Electrical Data FLA MCA MFS FLA MCA MFS 120/1/60 9.5 11.9 15 N/A N/A N/A 208/1/60 5.7 7.1 15 N/A N/A N/A 208/3/60 5.7 7.1 15 10.0 12.5 15 460/3/60 2.8 3.6 15 4.8 6.0 15 575/3/60 2.3 2.9 15 3.9 4.9 15s Cooling Only Cooling and Humidifier 120/1/60 N/A N/A N/A N/A N/A N/A 208/1/60 N/A N/A N/A N/A N/A N/A 208/3/60 N/A N/A N/A 19.2 24.
Chapter 6: Dimensional Data 6. Dimensional Data Top Piping Option Power Connections Bottom Piping Option Piping Connections 11.6" Condensate Connection Air In 77.8" Air Out Condensate Connection Piping Connections Power Connections 42.1" Figure 6-1a. Size and piping options, CRCW-12. 724-746-5500 | blackbox.
Chapter 6: Dimensional Data Side-Diverted Front Panel Piping Option, CRCW-12 11.6" 77.8" 48.3" Figure 6-1b. Size and piping options, CRCW-12. Page 14 724-746-5500 | blackbox.
Chapter 6: Dimensional Data Top Piping Option Bottom Piping Option Humidifier Connections Power Connections Piping Connections 23.4" Condensate Connection Air In 77.8" Piping Connections Air Out Condensate Connection Power Connections Humidifier Connection 42.1" Figure 6-2a. Size and piping options, CRCW-24. 724-746-5500 | blackbox.
Chapter 6: Dimensional Data Side-Diverted Front Panel Piping Option, CRCW-24 Figure 6-2b. Size and piping options, CRCW-24. Page 16 724-746-5500 | blackbox.
Chapter 7: Product Features 7. Product Features Table 7-1. Product features.
Chapter 8: Product Guide Specifications 8. Product Guide Specifications SUMMARY This specification describes requirements for a precision environmental control system. The Cold Row CW is a row-based cooling system that provides precision temperature control (and humidity control for the 24" models) for computer rooms, or rooms containing telecommunications or other highly sensitive heat load equipment, where continuous 24 hours a day, 365 days a year air conditioning is required.
Chapter 8: Product Guide Specifications CHILLED WATER COOLING COIL The coil must be constructed of seamless drawn copper tubes, mechanically bonded to tempered aluminum fins with enhanced fin design for maximum heat transfer, and mounted in a stainless steel condensate drain pan. The coil must be designed for a maximum of 500 ft./min. face velocity. The water circuit will be designed to distribute water into the entire coil face area.
Chapter 8: Product Guide Specifications ELECTRICAL SYSTEM The electrical system must conform to National Electrical Code (NEC) requirements. In accordance with NEC Class II requirements, the control circuit must be 24 volts AC wire, and control circuit wiring must not be smaller than 18 AWG. All wiring must be neatly wrapped, or run in conduit, or cable trays, and routed in bundles. Each wire must end with a service loop and be securely fastened by an approved method.
Chapter 8: Product Guide Specifications PASSWORD PROTECTION Access to the Info Menu, Alarms Log, and the ability to monitor room conditions must be allowed without the use of a password. Modifications to the control setpoints require the use of a password. The controller shall be programmed to recognize predetermined security levels before allowing access to display screens containing critical variables.
Chapter 8: Product Guide Specifications OPTIONAL ACCESSORIES MECHANICAL FLOW SWITCH A flow switch (shipped loose) must activate a loss of flow alarm if chilled water flow is interrupted. DIFFERENTIAL TEMPERATURE FLOW (OPTIONAL) A factory-mounted and wired temperature sensor for inlet and outlet water temperatures must permit a loss of flow alarm if the temperature difference is within 1° F (adjustable) during chilled water valve operation.
NOTES 724-746-5500 | blackbox.
Black Box Tech Support: FREE! Live. 24/7. Tech support the way it should be. Great tech support is just 30 seconds away at 724-746-5500 or blackbox.com. About Black Box Black Box provides an extensive range of networking and infrastructure products. You’ll find everything from cabinets and racks and power and surge protection products to media converters and Ethernet switches all supported by free, live 24/7 Tech support available in 30 seconds or less. © Copyright 2013. Black Box Corporation.