Summer is coming to the Northern Hemisphere, which means hospitals and universities will soon be gearing up their comfort cooling systems for use. While it is standard for these institutions to have backup pumps for chillers and closed loop systems, it is also common for these pumps to develop corrosion problems during the offline phase. Cortec® offers relief from these corrosion complications with two water treatments that contain Vapor phase Corrosion Inhibitors. Pros and Cons of Pump Redundancy Hospitals especially—but also universities—need to have redundant systems to make sure operations continue in the case of emergency. If one pump fails, a backup pump will ensure the chiller or closed loop keeps operating with little to no change noticed by the people inside the facility. Unfortunately, the offline period is an extremely vulnerable time for pumps because they are not exposed to their normal corrosion inhibiting water treatment when no water is flowing through. To counter potential surprises and make sure the backup pumps stay in good condition, facilities often alternate between pumps every week or two. However, corrosion can still happen in this short layup period, introducing a slug of corrosion products into the piping when the pump is turned on. This can cause clogging and other complications for a less than smooth startup. The Cortec® Corrosion Inhibitor Advantage One advantage of Cortec® closed loop water treatments is that they protect in multiple phases. Not only do they dissolve in water to fight corrosion on surfaces in direct contact with the circulating stream, but they also work in the vapor-phase, protecting metal surfaces above the water level. This vapor-phase action is exactly what is needed for pumps and piping that are periodically emptied but may contain residual water. Even if the system is complex or empty, Vapor phase Corrosion Inhibitors are able to protect in areas that contact-only corrosion inhibitors cannot reach. Layup of Chiller Pumps on Standby VpCI®-649 is a Cortec® water treatment recommended for protection of chiller pumps. It should be added to the closed loop / chiller water and circulated through the system before the pumps are shut down, leaving behind a corrosion inhibiting film that protects multi-metals above and below the waterline. Dosage is dependent on the length of protection needed—a smaller dose during operation and an incrementally larger dose for longer periods of layup (up to two years). There is typically no need to flush the inhibitor out before bringing the pump back online, making the transition even more seamless than simply having a lower chance of corrosion complications. VpCI®-649 comes with a molybdate tracer for easy detection but is also available with a PTSA tracer for those with molybdate restrictions. For pumps used with HVAC closed loops that reach temperatures of up to 302 °F (150 °C), Cortec® recommends using M-640 L, which also contains contact and Vapor phase Corrosion Inhibitors. It is an excellent replacement for silicates and phosphate/nitrite-based compounds and protects yellow and ferrous metals. It can be used in closed loops during operation or layup, allowing great flexibility for maintenance personnel or water treatment service providers. Don’t Sweat It This Summer Summer is hot, which is why hospitals and universities use comfort cooling systems in the first place. But there is no need to increase the extra heat and sweat of stress from trying to undo a corrosion problem on chiller pumps. Traditional corrosion inhibitors fall short of the goal, but Cortec® Vapor phase Corrosion Inhibitors easily achieve the void space protection needed so offline pumps can be ready to start at a moment’s notice. Contact Cortec® to learn about making life easier for your facility maintenance team this summer: Building, Design & Construction Magazine | The Choice of Industry Professionals 

Leading global boiler manufacturer, Navien, has further expanded its unique range of Combi Crossover boilers – adding a compact new option which packs a big punch. Navien’s recently launched an NCB ON range of boilers that do not need a cylinder to consistently deliver hot water to larger homes. Building on this success, the new NCB500-1S+/32K brings the same benefits – but at 32kW is specifically designed for smaller properties. For installers, the cylinder-free design means easier installation and space-saving benefits for their customers, particularly for those where space is already at a premium. Navien’s unique design ensures that this compact model delivers a flow rate of 13.1L/PM – noticeably outperforming alternative boilers at a similar price point which provide around 10L/PM. This means that the NCB500-1S+/32K can comfortably supply one shower and one tap simultaneously, as described by the 1S+ in its name. Jason Davies, National Business Manager at Navien UK, said: “The NCB500-1S+/32K is a reliable and easy to install boiler which never compromises on power or performance. Installers are already fitting the NCB ON range for their customers with larger properties and have been asking us to extend the range. Now their clients in smaller homes can also benefit from efficient, future-proofed boilers that deliver superb energy savings.” The new model is equipped with Navien ON technology, which delivers consistent temperatures and endless hot water. The latest addition to the NCB ON range is also backed up by an up to 10-year warranty while high efficiency helps homeowners save up to 38% in energy costs every year. Designed to be 20% hydrogen-blend ready, it is also prepared for the future of home heating. A best-selling brand in the USA and Canada, Navien is rapidly growing in the UK thanks to reliable availability of products, competitive pricing, ease of installation, and a host of end user benefits. Installers are further supported by a dedicated UK technical support team, while Navien has also opened nine new training centres in the UK and Ireland in the last four years. Installers can also earn prizes through the new ‘Navien Choice’ rewards programme. Those who register with the programme online can earn points for fitting Navien boilers and exchange these points for a range of tech and gadgets from top-quality brands. Be eligible for brand-new Apple AirPods by installing just 8 NCB500 ON boilers or save the points and save up for a Samsung TV! The South Korean manufacturer launched its new, state-of-the-art NCB Combi Crossover boiler range in late 2022, offering a fresh approach to home heating. Three new models help installers meet the changing demands of Britain’s heating systems, from small two-bedroom homes to larger five-bed properties with multiple bathrooms. The new range is also lighter in weight and far more compact. The NCB500-1S+/32K is the latest addition to the range and is available now. With the technology, pedigree, and network of a trusted supplier to the trade, Navien prides itself on rapid supply, reliable stock availability, unmatched prices, and future-proofed quality products. To learn more visit: https://navien.co.uk/professional Building, Design & Construction Magazine | The Choice of Industry Professionals 

Leading UK-based manufacturer Ebac has unveiled a new mechanical ventilation with heat recovery (MVHR) system in order to tackle the UK’s damp and mould problem. The UK manufacturer, based in Newton Aycliffe has designed the system to be an easily installed, self-managing, ‘hands-off’ eco-system for tenants and homeowners, offering a major solution to the UK’s damp and mould problem. The unit, which is designed to be installed in any loft opening, is a ‘whole-house’ solution, continually extracting polluted, humid air from within a building and replacing it with fresh air taken from outside the building through a heat exchange system. The unit offers offers further significant cost savings through its patented Smart Control System. Smart Control, which is unique to Ebac, adjusts airflow and performance levels based on live readings from the building’s internal climate, reducing energy usage and requiring no programming from the tenant or homeowner. Ebac, which has manufactured and sold over 2 million commercial and domestic ‘plug in’ dehumidifiers globally, has launched the MVHR as a long-term solution to damp and mould in residential and commercial buildings, which is estimated by the UK government to stand at 3-4% of the four million social housing homes, with 0.2% of those falling below the ‘decent homes standard’. The scale of the UK’s damp and mould problem has come to the fore recently following the tragic death of Awaab Ishak in Rochdale which has prompted new legislation that is due to come into force later this year. Awaab’s Law will place mandatory obligations on private and social landlords to ensure that damp and mould issues are investigated, and serious complaints resolved quickly. The Housing Ombudsman will also be given new powers to help landlords improve performance, in amendments to the Social Housing (Regulation) Bill and social housing landlords will have to investigate and fix damp and mould in their properties within strict new time limits. Andrew Hobson, Sales and Marketing Director at Ebac said: “There are currently around 4.5 million cases of damp and mould across the UK which equates to around 19% of the housing stock- and those are the cases that have been reported. With the new legislation and retrofit requirements for commercial and residential buildings in the lead up to 2050, our system will offer a more cost-effective solution for housing associations, councils and private landlords to ensure that their tenants are living in healthier, more energy-efficient spaces. Our Smart Control feature means that tenants and homeowners do not have to touch the units, only requiring a filter change every 12-24 months depending on usage.” The unit has been launched this month following successful trials across the UK and will be showcased at the Installers Show in Birmingham in June of this year. Building, Design & Construction Magazine | The Choice of Industry Professionals 

Leverages complementary abilities and expertise to enable energy efficiency and sustainability upgrades with little-to-no upfront capital investment for private-sector-owned commercial buildings Honeywell today announced a strategic investment in Redaptive, which will accelerate a collaboration to bring Energy-as-a-Service (EaaS) capabilities to private sector-owned commercial and industrial buildings. This investment helps enable the rapid deployment of technologies designed to reduce carbon emissions across a large portfolio of buildings. This collaboration combines Honeywell’s experience in energy savings performance contracting (ESPC) and building controls capabilities with Redaptive’s innovative data technology and EaaS platform. It provides customers with more ways to baseline current energy usage and reduce consumption to achieve their sustainability goals – with little-to-no upfront investment. Terms of the investment were not disclosed. The energy-performance-contracting market and associated funding mechanisms enable energy improvements without upfront customer capital investment by using the energy savings to fund the work. This approach is well-developed in the public sector, as well as in the education and healthcare markets. However, there remains significant opportunity with private-sector commercial building owners and operators who have traditionally made the full investment in energy audits and upgrades, potentially impeding the opportunity to fully capture energy savings. This collaboration will create the opportunity for customers to generate meaningful energy savings in a capital efficient manner. It also offers accelerated technology deployment to upgrade existing building infrastructure, support capabilities such as on-site renewable energy assets, and deploy advanced controls software, such as Honeywell Buildings Sustainability Manager powered by Honeywell Forge. As part of the collaboration with Redaptive, Honeywell will deploy the Redaptive platform in its own facilities. “The time to reduce the energy use and carbon impact of buildings is now,” said Del Misenheimer, president of Honeywell Building Solutions. “We must find ways to bring much-needed technologies and capabilities to many more buildings. Our work with Redaptive will enable us to help more commercial buildings deploy energy conservation projects with innovative capital deployment models and efficiently deliver asset-level analytical insights.” With this move, Honeywell and Redaptive will enable customers to improve operational efficiency and better support sustainability goals through rapid deployments and uptime improvement, using technologies designed to lower energy use and improve asset health. Redaptive’s data technology is easy to use and deploy at scale, enabling improved energy monitoring and equipment optimisation for customers. “We are thrilled to work with Honeywell to further our shared commitment to boost sustainability efforts in commercial and industrial buildings,” said Redaptive Chief Executive Officer Arvin Vohra. “This collaboration enables us to expand our platform to support businesses with real estate holdings of all sizes to reduce carbon emissions and energy use.” Research shows that the building and construction sector accounts for 34% of energy demand and 37% of energy and process-related CO2 emissions. The EaaS market is growing rapidly due to rising energy costs, and Redaptive is a market leader in this space. The collaboration provides the companies with access to each other’s capabilities. This includes Redaptive’s data technology, energy assessments, and efficient capital deployment to identify the energy conservation measures with the best return on investment, as well as Honeywell Buildings Sustainability Manager to monitor, control and optimise a building’s energy use and carbon emissions. Building, Design & Construction Magazine | The Choice of Industry Professionals