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www.heatingandventilating.net


Spotlight


standards by allowing the use of natural ventilation by opening windows but boosting ventilation on warm days and mixing ventilation on winter days. In the UK there is only a 2% replacement of building stock each year this means there is huge potential in the refurbishment market for HVAC contractors to grow their businesses with hybrid ventilation.


NVHR


One example of a hybrid system is the Breathing Buildings Natural Ventilation with Heat Recycling (NVHR) system, which uses efficient centrifugal fans to achieve hybrid mixing ventilation. The NVHR system allows single-sided, natural ventilation in offices, classrooms and other deep plan spaces whilst making the most of internal heat gains to deliver superb thermal comfort. This system allows buildings with limited facade and roof space to be naturally ventilated with low energy mixing fans mitigating cold draughts in winter and providing an exhaust boost in summer. The system is fitted with external and internal temperature sensors and an intelligent controller, which monitors conditions to create an ideal indoor environment boosting both productivity and wellbeing. The system can be used in almost any building due to its small size and has three modes: natural, summer and winter. Staff productivity is crucial for both individual business and the UK economy as a whole. Just a 1% increase in productivity would add £20bn to the UK economy. Hybrid ventilation technology offers an intelligent and advanced ventilation solution for the complex building developments of today, that provides improved IAQ and lower energy bills resulting in productivity gains, improved wellbeing and reduced costs.


ViewPoint M


Maximising space in plant rooms


&E contractors and building services managers looking to maximise space within plant rooms have a checklist of


utilities to consider - heating systems are just one of many. Chris Caton, product manager at Ideal Commercial Boilers explains his thoughts on the process and the factors that should be considered when considering space allocation for boilers within plant rooms. Smaller footprint boilers or a modular system will help with plant room design, as space is at a premium in many cases; M&E contractors need to make the most of room in small or otherwise filled plant rooms.


It’s also worth noting that legislation around BS 6644 should also be taken into consideration, especially the amount of ventilation that is needed for the safe running of a boiler installation. The obvious checks need to be considered such as space around the boiler, which should always be in line with manufacturer’s guidelines for servicing and commissioning checks. There should also be no space constraints with regards to the flue – servicing access should never be restricted. Identifying the safe parameters within the legislation should always be checked with the flue installer or manufacturer. Sometimes, a building refurbishment can mean that boilers and heating


systems need to be relocated to other parts of a building, away from the original plant room. In some cases, these can be relocated to the roofs of buildings.


Winter Mixing • Draught mitigation strategy • Mixes warm room air with fresh external air • Natural exhaust through the unit


A good example of this in practice was the installation of 20 Ideal Commercial Evomax 150kW wall-hung commercial condensing boilers and five Frame and Header kits to Southampton City Council in five of its residential tower blocks. A plant room was created on the roof of each block to accommodate the Evomax boilers and other appliances. With the fitting of any boiler the system separation and water treatment


processes are a necessity meaning adequate space needs to be allotted and factored in. Corrosion of pipes and boiler parts from incorrect treatment can mean that heating systems fail or worse are out of service for a lengthy period – this is something that needs to be avoided at all costs. For more information about Ideal Commercial’s condensing boiler ranges or alternative heating solutions, please email commercial@idealboilers.com, call 0844 543 6060 or visit http://www.idealcommercialboilers.com Follow Ideal Commercial on Twitter at: @idealboilers


Summer Boost • Damper opens fully • Air delivered to rear of the space • Natural exhaust through the unit • Night cooling


Natural Mode • Damper opens • Single sided ventilation • Works with other openings in the space


www.heatingandventilating.net April 2018 11


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