OnRak™
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Rear door Up to 35kW + EER up to 114.5 + Up to 88% less power input + Up to 50% saving in energy* * when integrated with a free-cooling chiller CHILLED WATER DUALWATER DUAL COOL CHILLED COOL EC FAN CHILLED WATER DUALWATER DUAL COOL CHILLED COOL EC FAN MICRO MICRO INVERTER MICRO MICRO INVERTER EC FAN SCROLL SCROLL SCREW CENTRIFUGAL CENTRIFUGAL MICROCHANNEL INVERTER SCREW MICROCHANNEL INVERTER HFC R410A COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COIL COIL HEAT DIGITAL PUMP HFC R407C HEAT PUMP HEAT PUMP DIGITAL DOWNFLOW DOWNFLOW DIGITAL UPFLOW/ UPFLOW/ COMPRESSOR COMPRESSOR DOWNFLOW DOWNFLOW HEAT DIGITAL PUMP HFC R407C HEAT PUMP HEAT PUMP DIGITAL DOWNFLOW DOWNFLOW DIGITAL UPFLOW/ UPFLOW/ COMPRESSOR COMPRESSOR DOWNFLOW DOWNFLOW EC FAN SCROLL SCROLL SCREW CENTRIFUGAL CENTRIFUGAL MICROCHANNEL INVERTER SCREW MICROCHANNEL INVERTER HFC R410A COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COIL COIL CHILLED WATER DUALWATER DUAL COOL CHILLED COOL EC FAN EC FAN SCROLL SCROLL SCREW CENTRIFUGAL CENTRIFUGAL MICROCHANNEL INVERTER SCREW MICROCHANNEL INVERTER HFC R410A COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COIL COIL MICRO MICRO INVERTER HEAT DIGITAL PUMP HFC R407C HEAT PUMP HEAT PUMP DIGITAL DOWNFLOW DOWNFLOW DIGITAL UPFLOW/ UPFLOW/ COMPRESSOR COMPRESSOR DOWNFLOW DOWNFLOW SERVICE CONTROLS SERVICE CONTROLS TRAINING PRECISION AIR IT COOLING PRECISION AIR CHILLERS CONDE SERVICE ENERGY SERVICE CONTROLS BRITISH CONTROLS TRAINING SERVICE CONTROLS IT COOLING AIRCO ENERGY ENERGY ENERGY COMFORT TRAINING TRAINING PR PRECISION ENERGY BRITISH BRITISH BRITISH EFFICIENCY MANUFACTURER EFFICIENCY CONDITIONING EFFICIENCY MANUFACTURER CONDITIONINGM COND MANUFACTURER EFFICIENCY CONDITIONING MANUFACTURER EFFICIENCY CO U

Cooling hot spots Flexibly, where it matters The OnRak™ is a resilient rear door heat exchanger, designed to manage high discharge temperatures directly from the server into the aisle space. In dealing with the heat load closer to the source, the OnRak™ is highly efficient in both power usage and floor space, and is ideal for targeting hot spots in medium to high density environments. The OnRak™ has a slim configuration which adds only 200mm to the depth of the rack, reducing the cooling space claim whilst providing up to 35kW of cooling. The OnRak™ offers an expandable, adaptable chilled...

Saving in power consumption: OnRak™ with EC fan 88% power saving OnRak™ with EC fan compared with a conventional CW CRAC unit* 88% annual power saving The OnRak™ has been engineered with very low air flow resistance and accommodates latest EC axial fan technology. This enables it to modulate fan speed in response to load fluctuations and offer greatly enhanced fan efficiency particularly at part load. Power consumption / year (kW/h) Conventional CW CRAC unit EER 17.0 * Both units running in same application and delivering same amount of cooling performance Reducing operating costs and...

in high density areas In high density areas of over 20kW heat load per rack, hot spots abound and space is at a premium. Adding only 200mm to the depth of the server rack, the OnRak™ is perfect for dealing with hot spots. Temperature (C) The variable speed fans within the OnRak™ door respond seamlessly to load fluctuations, pulling hot air directly from the server cabinet across the door’s high efficiency heat exchangers. The compact hot aisle is therefore contained between the rack and the OnRak™, which means that the entire data centre is at server inlet temperature creating a more...

Using heat to increase free-cooling The OnRak™ delivers even greater efficiency when integrated with one or more Airedale free-cooling chillers. Free-cooling saves vast amounts of energy, particularly when room temperatures are high. For free-cooling to operate, the temperature difference between the ambient air and hot return water can be as little as 1°C. Concurrent free-cooling Airedale chillers offer concurrent free-cooling which is active whenever the ambient temperature is below the return water temperature.The system controls constantly monitor the temperature differences and will...

Intelligent controls Seamlessly managing your system SERVICE The control centre of each of our cooling systems is a sophisticated electronic microprocessor with control logic specially developed byCOOLING COMFORT CHILLERS CONDENSERS & ENERGY TRAINING PRECISION AIR IT Airedale. BRITISH EFFICIENCY MANUFACTURER CONDENSING UNITS The microprocessor uses sensors to send and receive messages to and from active components such as compressors, fans and pumps so they interact with each other, balancing cooling duty, temperature, air flow and pressure to exactly match the application. Resilience is...

Data centre management Taken to another level ACIS™ building management system developed by Airedale, enables you to manage smart cooling and other building services, from any manufacturer, in a single, integrated system across multiple sites and communication protocols. ACIS™ sits at the front end of a building system, putting you in control of reducing operating costs. Generator/ UPS/Server Energy Manager Sequencer With the click of a button on a PC, tablet or phone, valuable and intelligent information can be pulled back automatically for remote 24/7 monitoring and maintenance, enhanced...

Specifications at a glance Simple connections to customer-specific rack To apply the OnRak™ to a customer-specific rack with a different width and /or U size, the OnRak™ can be supplied with an appropriate mating frame which is fitted to the rack cabinet. The OnRak™ door is then simply dropped onto the frame via lift-off hinges. Power supply Two flexible, stainless steel braided hoses connect the coil to the chilled water supply. The flexibility of the hoses allows the OnRak™ door to be easily opened for accessing hardware within the server cabinet, without the need to disconnect services...