CIBSE AWARD WINNER | ENCORE CISTERN We didnt want plumbers to have to undertake additional training to fit it leisure facilities. An added benefit in newbuild projects is that the sustainable product automatically attracts Breeam and Leed credits. The trick is to get it specified at the early stages of a project, when Breeam is being considered, says Davis. Its a cheap win. You might pay a bit more for an Encore cistern, but the Breeam points could offset more expensive ways to comply further down the line. Like any new product, it has to be tested to prove its effectiveness. Encore was rigorously examined at Thomas Dudleys in-house facility in the West Midlands, undergoing chemical endurance tests and a 200,000-cycle flush test. It was then sent to Kiwa, experts in testing, inspection and certification, to prove its AB air gap. This is an arrangement of fittings where a complete physical airgap of 20mm is maintained between the lowest waterdischarge point and the critical water level of a receiving vessel. Encore passed and was classified as a CAT (Category) 5 product. This means it can not only use condensate, but also other greywater sources, while protecting the water authorities mains supply. Encore cisterns were also installed in an office of a major utilities company in the north of England. The mains water was metered to allow the condensate usage to be determined based on the number of flushes. The company was so impressed that it has specified a further seven cisterns for a food hall, after data showed mains-water savings of 50% over a year. BRE is another fan of the product, installing a unit at its Willmott Dixon building to allow engineers and visitors to see how it works. Two Encore cisterns were also installed at a major hotel chain in Manchester, to trial the product and obtain data. One, in a bedroom, was monitored from 24 July to 25 August, during which time the toilet was flushed 426 times, equating to 1,917 litres of water. The water meter indicated that the Encore toilet had used only 1,250 litres of water, saving 667 litres of mains-fed water. Encore is performing far better than we anticipated, says Davis. Weve been speaking to Marriott and Hilton about installing Encore cisterns in their new hotels, because they have tough targets for saving water. Weve already done some site surveys for them in Barcelona and Dubai, and weve met with the Dubai Electricity and Water Authority. It is in drier, water-starved regions such as southern Europe, Africa, the Middle East and Australia, where there is greater reliance on air conditioning that Encore should flourish. Even in the UK, with summers becoming hotter and more buildings using air conditioning, the Encore cistern could be a very efficient way to save water. CJ OUR STANDARD IS EXCELLENCE. Here is the new design. Any enquires should be sent to: sean.austen@ksb.com Here is the new design. Any enquires should be sent to: Quality products from KSB last longer and work better. Thats a promise. Find out more about KSB and our efficient solutions now. www.ksb.co.uk - 01509 231872 Pumps Valves Service 66 October 2019 www.cibsejournal.com CIBSE Oct19 pp65-66 Encore Cistern.indd 66 Here is the new design. Any enquires should be sent to: sean.austen@ksb.com 01278 458 686 20/09/2019 16:20