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 www.airedale.com BRITISH MANUFACTURER ENERGY EFFICIENCY

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 efcient in both power usage and oor space, and is ideal for targeting hot spots in medium to high density environments. The OnRak™ has a slim conguration 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 water cooling...

OnRak™ with EC fan compared with a conventional CW CRAC unit* 12,000 10,000 The OnRak™ has been engineered with very low air ow resistance and accommodates latest EC axial fan technology. This enables it to modulate fan speed in response to load uctuations and offer greatly enhanced fan efciency particularly at part load. Power consumption / year (kW/h) OnRak™ with EC fan 88% power saving Saving in power consumption: 88% annual power saving 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 uctuations, pulling hot air directly from the server cabinet across the door’s high efciency 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 comfortable...

Using heat to increase free-cooling The OnRak™ delivers even greater efciency 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 only switch...

Intelligent controls Seamlessly managing your system The control centre of each of our cooling systems is a sophisticated electronic microprocessor with control logic specially developed by Airedale. 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 ow and pressure to exactly match the application. Resilience is designed into OnRak™ units from day one and is managed by advanced controls logic to maintain cooling and give you complete condence...

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 system...

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

OnRak™ standard door size Nominal cooling capacity in kW Chilled water cooling Case width in centimetres LogiCool OnRak OnRak™ technical specications: Model no. 1) Nominal cooling capacity based on 14 / 20ºC water and 46ºC air on temperature Performance data calculated in accordance with BSEN 14511-2011 and Eurovent 6/6 OnRak™ in action University of Leeds data centre The challenge Higher densities in the high performance computing (HPC) facility of the University of Leeds have created an extra 30kW of load per 42U rack, which could not be cooled by conventional CRAC units since this would involve...

Performance tested And proven Quality is assured by our on-site, worldclass testing and production facilities and the application of the latest manufacturing techniques and continuous improvement. Airedale’s dedicated test facility is the only purpose-built one of its kind in the UK. Here all our product lines are performance tested for a global market. Accurate test data is produced anywhere from -5°C to +55°C in controlled ambient environments. The climate test chambers include a hemi-anechoic chamber for accurate measurement of product sound data. A factor inuencing selection of Airedale was...

Total support Whenever you need it At Airedale, we don’t just manufacture and supply cooling and refrigeration products; we also provide a broad range of supporting services to ensure our customers receive the best possible aftersales care. With more than 40 years’ experience in business critical cooling, investing in an Airedale cooling or refrigeration solution means that you can benet from our advice, expertise and technical support too. From design and selection, through to commissioning and beyond, we make sure your system reduces your total cost of ownership, whilst providing maximum availability...