IN FOCUS


Commercial LED Downlights with CCT Switch


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roving popular with contractors is Ovia’s Sprite and E-Sprite range of commercial recessed downlights with CCT switch. Sprite is a range of recessed TRIAC dimmable LED downlights with CCT switch (correlated colour


temperature) switch - a built-in, three position switch which allows for instant change of the colour temperature, from warm white (3000k), to cool white (4000k) to daylight (6000k). These IP54-rated aluminium downlights are supplied with TRIAC dimmable drivers which are pre- wired with a Fast Fit Flow connector or 3-in-1 multi-function dimming option for quick and easier installation. There are four sizes available – 3”, 5”, 6” and 8” diameter – and a choice of 10W, 13W, 18W, 25W and 35W versions, to cover a wide range of installation types and requirements. They have a five year warranty. The E-Sprite range of recessed LED downlights with CCT switch are eco commercial downlights that


are available in 9W, 15W, 25W or 30W. These IP20 rated downlights are supplied with a CCT switch as standard and are pre-wired with a Fast Fit Flow connector or 3-in-1 multi-function dimming option for quick and easier installation. They have a three year warranty. The full range can be seen in the latest Ovia catalogue which can be downloaded from the Ovia website – www.oviauk.com – and the Scolmore Group app.


Committing To IEQ When Operating Gas-Fired Water Heating


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espite hybrid working becoming firmly entrenched across the UK, indoor air quality (IAQ) remains an especially important issue within commercial buildings. The World Health Organisation (WHO) guidance on air quality has advised member states to consider air pollution to be as big a threat


to human health and well-being as climate change and adjusted almost all its previous maximum target levels for airborne pollutants downwards. It linked long-term exposure to even relatively low concentrations of ambient and indoor air pollution to lung cancer, heart disease, and strokes. In the wake of the Covid-19 pandemic new UK standards (BS40102-1) were deemed necessary, providing recommendations for measuring, monitoring, and reporting indoor environmental quality (IEQ) in all types of non-domestic buildings. It includes an evaluation and rating system for air quality, lighting, thermal comfort, and acoustics, to help identify retrofit and renovation work required to improve the health and well-being of occupants. To meet the new standard organisations will need to tackle conditions that have a direct impact on human health including humidity, and excessive levels of CO2, CO, NO2, volatile organic compounds (VOC), airborne particulates and mould. Adveco has for many years operated a system of checks to ensure the comfort and safety of buildings,


from initial system commissioning, to ensure correct and safe installation of appliances, to annual warranty servicing. Commissioning an application upon installation is especially critical if gas-fired appliances are an element of the hot water system. One of the most common reasons for a system to fail commissioning is the incorrect installation of the flue, often venting too low or too close to a building’s windows. The commissioning process identifies such errors helping to ensure control and safe removal of CO2 and NOx emissions from proximity to building users. To improve combustion efficiency, the latest generation of condensing gas water heaters and boilers operate so that the water vapour in the exhaust condenses on the heat exchanger and not in the flue or outside the building. With a high-efficiency pre-mix Fecralloy burner, such as employed in the Adveco MD & AD / ADplus product ranges, ideal combustion efficiency can be achieved up to 107% (net)/98% (gross) reducing energy costs and producing ultra-low emissions. The low CO (19ppm) and especially ultra-low NOx (27mg/kWh) emissions, from a hot water system built around a high-efficiency condensing water heater or boiler (Class 6 appliance) easily satisfy the requirements of the current Energy-related Products (ErP) directive. It is also worth mentioning that regular servicing is important for identifying or preventing cases of damaging corrosion (in soft water areas) and limescale build-up (in harder water areas) which can lead to leaks in any hot water system. If unchecked, the resultant damp can encourage the growth of mould which is a type of fungus which produces airborne spores and is recognised as a potentially dangerous contributor to poor IAQ and health risks. Adveco’s range of stainless steel cylinders and smart application of electric boilers can help address the regional geologic threats to a system. In the drive to achieve net zero organisations looking to make steps towards a more environmentally friendly built environment may initially reject the gas-fired option, but the reality is modern systems remain advantageous both economically and environmentally, plus they provide a bridge towards potential future hydrogen-based alternatives.


www.oviauk.com


CIAT AirTech AHUs Selected for Pioneering Seagreen Offshore Wind Turbine Project


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NGUS, Scotland, 12th of September, 2023 – Seagreen, Scotland’s largest


and the world’s deepest offshore wind farm project located in the North Sea, selected CIAT’s high- efficiency ClimaCIAT® AirTech™ air handling units (AHUs) to manage temperature and humidity in the transformer rooms for all the electrical substations. CIAT is a part of Carrier Global Corporation (NYSE: CARR), global leader in intelligent climate and energy solutions. Six ClimaCIAT AirTech AHUs have been installed to control temperatures in the transformer rooms, two units in each of the three substation buildings, to control the heat generated by the conversion of power up to 400kV for use by the national electricity grid. The AHUs are installed in a ‘run and standby’ set-up where three run for a week then are swapped for the other three. This ensures standby units are always available in the event of an outage, and that all units have equal run-time to maximise working life. The modular ClimaCIAT AHUs are equipped with high-grade filters to help support indoor air quality to maintain optimum year-round climate conditions to ensure the transformers operate at peak efficiency. CIAT supplied two matched condensing units per AHU. “We had no issues with the AHUs,” said Chris McCall, Operations Director for MHSL Services, the contractor for the project. “CIAT’s equipment came in three or four sections, which we bolted together and added the controls, the process was fairly straightforward. I have used CIAT on many occasions in the past and found their products to be second to none, they are very reliable and withstand the test of time.” “CIAT’s innovative ClimaCIAT AHUs are all Eurovent certified, meeting the latest efficiency and performance requirements under Ecodesign Directive regulations,” said Stephen Munn, Regional Sales Manager, CIAT. “This insight empowers informed investment decisions, fostering sustainability and carbon reduction initiatives for projects like Seagreen that will provide 1.6 million homes with renewable electricity each year.” To learn more about CIAT’s heating and cooling solutions, visit https://www.carrier.com/commercial/en/uk/.


ciat.com 34 BUILDING SERVICES & ENVIRONMENTAL ENGINEER OCTOBER 2023 https://adveco.co/


Nuaire expands Xboxer heat recovery range


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uaire, part of the Genuit group, has expanded its market-leading Xboxer heat recovery range with the addition of the UNI-X unit, which has now been rebranded to Xboxer Universal.


Originally launched in 2017 as a ventilation solution for student accommodation, the UNI-X has been a favourite amongst Nuaire’s customers, even becoming an Innovation of the Year finalist at the Student Accommodation Awards. Since its launch, the UNI-X has proven to be a suitable solution across a far wider range of applications than ever anticipated, including schools, hospitals, offices, care homes, and apartments. In line with its widespread appeal, Nuaire has rebranded the UNI-X units as Xboxer Universal, part of the Xboxer heat recovery range. Fans of this innovative heat recovery unit will be pleased to know its construction and performance retain the quality that has made it so popular, with high efficiencies, low SEPs and ultra-low noise levels. The latter is a result of the Xboxer Universal’s unique casing consisting of internal profiling and external acoustic cladding. Xboxer Universal is available in three models - UNIX-220, UNIX-360 and UNIX-580 - with the largest model having enough duty to ventilate a cluster of up to 12 rooms. The easy to use three speed controls are included as a standard feature, allowing full adjustability for site requirements. Each size is equipped with an integral mounting bracket, helping to reduce installation time no matter the project. Multiple spigot options are available, making the unit fully compatible with circular or rectangular ducting. The various sizes allow customers greater flexibility when choosing a suitable unit for their space. The UNI-X580 will enable sites to ventilate a large cluster of rooms with just one system. Innovative space saving solutions mean the unit needs a maximum depth of 295mm, enabling it to fit neatly into low ceiling voids. Once installed, the unit is easy to maintain with the G3 filter accessible from the underside of the unit, meaning the highest indoor air quality levels can be maintained. The Xboxer Universal range is enhanced by Nuaire’s in-line carbon filter range, IAQ-BOX, which filters out


up to 99.5% of harmful N02 and up to 80% of Particulate Matter (PM). Nuaire’s all-in-one thermal ducting range, Ductmaster Thermal, can also be specified to improve thermal efficiency and reduce installation time. Xboxer Universal is the latest addition to Nuaire’s Xboxer family whose combination of innovative design, flexible control options and high efficiency, make it an award winning, market-leading heat recovery solution. Other units in the range include Xboxer Hybrid, which combines pure natural ventilation with mechanical assistance; and Xboxer XBC+ which has the lowest depth by duty unit on the market, for a space saving solution. All are designed to filter clean air into a building whilst extracting stale air from the interior, retaining heat that would otherwise be lost. Established in 1966, and based in Caerphilly, Nuaire designs and manufactures practical solutions for


all ventilation requirements across the domestic, commercial and industrial construction sectors. Nuaire has a reputation for pioneering new air technology supported by high-quality units. For further information, please contact enquiries@nuaire.co.uk or visit https://www.nuaire.co.uk/ best-practice/xboxer-family


www.nuaire.co.uk Read the latest at: www.bsee.co.uk


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