IN FOCUS


Nuaire BPS-ECO-HP Air Handling Unit comes with integrated heat pump charged with R32 refrigerant


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uaire has expanded its Boxed Packaged Solution (BPS) range of Air Handling Units (AHUs) with the the BPS-ECO- HP; a unit with integrated heat pump charged with R32


refrigerant. The BPS-ECO-HP uses 20% less refrigerant than existing market competitors still opting for R410a. By using R32, the most efficient and lowest-Global Warming Potential (GWP) refrigerant on the market for an AHU, the BPS-ECO-HP is more efficient when carrying heat and has a lower impact on the environment. The R32 refrigerant has a GWP of 675, 30% lower than that of systems available on the market right now. Each type of refrigerant has a GWP – a figure which allows the comparison of global warming impacts


of different gases. The base is carbon, which has a GWP of one. As an example, R410A has a GWP of 2088. This means that if one kilogram is released into the atmosphere it would have 2088 times the harmful effect of one kilogram of carbon. By comparison, R32 has a GWP of only 675, making it much less harmful to the environment. R32 is also a hydrofluorocarbon (HFC) refrigerant, which is part of a range of refrigerant gases developed to be more environmentally friendly compared to CFC and HCFC gases. As a result, R32 has an ozone depletion potential (ODP) of zero, making it ideal for the next generation of equipment. John Hammond, New Product Development Manager and heat pump specialist at Nuaire, said: “To


tie into net zero goals, Building Regulations are set to change in the future to meet a higher level of GWP and this new system will be ahead of its time to meet that standard. When designing the new BPS-ECO-HP range we wanted to create a system with a lower environmental impact and to achieve this we opted to use the R32 refrigerant to future proof the design, making specification decisions easier and quicker.” By now integrating the heat pump into the already commercially popular Nuaire BPS range, the new BPS-ECO-HP will contribute towards net zero targets with its high efficiency and high specification levels. It is also more practical, as by integrating the heat pump, it eliminates the need for on-site refrigerant installation works - creating a system that is quicker and easier to specify, install and maintain, while still incorporating all of the classic BPS features, such as its hydrophobic roof, high-classification levels, skid system for ease of maintenance, and Nuaire ‘plug and play’ Ecosmart controls as standard. The heat pump system is installed within the thermal wheel allowing for a very efficient heat recovery system. The incorporated dual compressor operation features an automatic defrost control strategy to ensure heat recovery is not lost in the event of one compressor failing. When the build-up of frost in the exhaust coil reaches a limit, the dual system will automatically respond and start warming up the second system to ensure continuous ventilation and peace of mind. The range has undergone a rigorous test programme over a 12-month period in Nuaire’s AMCA- certified test facility to provide extensive data from -5 to 25°C.


www.nuaire.co.uk


ROCKWOOL® launches CPD on building services insulation standard


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PD explains important practical changes and additions to BS 5422


ROCKWOOL, the UK’s leading stone wool insulation manufacturer, has launched an ‘Introduction to BS 5422’, a new CPD (Continuing Professional Development) module to support specifiers and engineers with advice on how to plan and implement the insulation of building services systems following a recent update to the standard. The CPD coincides with the recent publication of ROCKWOOL’s Guide to BS 5422:2023. BS 5422 provides a method


for specifying thermal insulating materials needed on pipes, tanks, vessels, ductwork and equipment for certain defined applications and conditions within the temperature range – 40°C to +700°C in domestic, non-domestic and commercial buildings. The standard works as guidance for consultants, engineers, contractors and manufacturers of


thermal insulation in the building services sector. It supports Approved Document L as the reference point to determine the minimum thickness of insulation required to limit heat losses and gains from building services. ROCKWOOL’s new CPD module explores the factors that need to be considered when deciding on the insulation of building services systems according to BS 5422. It also demonstrates how the standard aims to improve the living and working environment of the building as well as make it safer and more energy efficient. “With BS5422:2023, the insulation requirements for building services and HVAC systems have been aligned closely with current thermal Building Regulations,” comments Will Wigfield, Product Manager - Fire Protection & HVAC at ROCKWOOL UK. “The new CPD will explain how the standard makes it easier for designers and specifiers to choose the most appropriate material for each project and allow them to exceed the minimum requirements if they wish.” Learn more about BS 5422, register to attend the ROCKWOOL CPD session at https://www.rockwool. com/uk/advice-and-inspiration/learning/.


www.rockwool.com/uk 32 BUILDING SERVICES & ENVIRONMENTAL ENGINEER FEBRUARY 2024 idealcommercialboilers.com/net-zero.


MAGDUO - Two-Wire Fire Alarm System from ESP


Join the Net Zero Journey with Ideal Heating Commercial’s New Information Hub


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deal Heating Commercial Products has introduced a new net zero information hub on its website - idealcommercialboilers.com/net-zero - where visitors can regularly return to read up-to-date information on the UK’s drive to decarbonise commercial heating, paving the way to net zero in


2050. It has been created as part of Ideal Heating’s Join the Net Zero Journey strategy, aimed at providing customers with low carbon commercial heating solutions. The new information hub is home to informative case studies, white papers, and instructive guides created by Ideal Heating. Case studies, the latest of which include a school, housing development and offices, clearly demonstrate how industry colleagues are deploying low carbon heating solutions to the best effect, and the impact on energy usage and emissions. The full array of Ideal Heating low carbon commercial heating technologies is covered, from heat pumps through to highly efficient heat networks and hydrogen blend ready boilers. For more in-depth examinations of low carbon heating and hot water solutions, the White Paper and Guide sections on idealcommercialboilers.com/net-zero are invaluable. The ‘Heat Pumps – Road to Decarbonisation’ White Paper is essential reading, whilst the new ‘Hydrogen Guide: Understanding the Hydrogen Discussion’ is designed to educate and inform people on the evolving subject of hydrogen in heating. It provides an overview on the use of hydrogen as a fuel for commercial boilers, summarising the key issues and identifying where we currently sit and future possible pathways. Ideal Heating Commercial’s range of low carbon heating solutions are also addressed on the new Net


Zero information hub. These include ECOMOD commercial heat pumps, hydrogen-ready condensing boilers, and POD Heat Interface Units (HIU) for heat networks.


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SP’s MAGDUO Two-Wire fire alarm system is aimed at small to medium contractors, offering them a highly flexible and adaptable system that will save them time and money on the installation process. Two-Wire fire alarm systems are based on standard conventional system technology. Unlike


standard conventional four wired systems where the detectors, call points and alarm devices for each zone are wired on separate circuits, MAGDUO utilises intelligent Two-Wire technology, which allows all devices to be wired on the same set of two-core zone cables back to the control panel - enabling it to use a single circuit per zone both for detection and to power the sounders. This advanced technology can reduce both installation and material costs. In total ESP’s MAGDUO range comprises 25 individual products including 2, 4 and 8-Zone fire panels (available in a grey or black finish), as well as repeater panels – also in grey and black – with the 4 and 8 zone panels able to support up to 8 repeater panels. A FlexiPoint detector is programmable to 7 different modes including smoke and heat detection and there are various sounders, strobes and call points in the range. With its adaptability, speed of installation and cost-effectiveness, MAGDUO provides an ideal fire alarm solution for a range of small to medium sized projects such as restaurants, retail outlets, schools, offices, apartments and hotels. ESP is offering full training on the system to all wholesalers and installers.


www.espuk.com Read the latest at: www.bsee.co.uk


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