BSEE MAINTENANCE & REFURBISHMENT


Leading Brish fan manufacturer, VentAxia has supplied two Sennel Mulvent H central extract units to a refurbished tenement property in Edinburgh New Town, designed by Níall Hedderman, director at Capital A Architecture


he former basement store has been redeveloped and extended to create a luxury five-bedroom home and has been named as one of the ‘100 best homes in Scotland since 2000’ according to the Royal Incorporation of Architects in Scotland.


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uThe former basement store has been redeveloped and extended to create a luxury fivebedroom home


Extensive redesign


The project, led by Capital A Architecture, involved an extensive redesign and extension that created a more open plan living area, split over two levels. The rear garden is steep and the redesigned garden room has a lowered floor level to connect to the garden with as few steps as possible. The seven-month build included installation of Vent-Axia’s Sentinel Multivent H continuous mechanical extract ventilation (MEV) units which provide ventilation to the kitchen, bathroom and three en-suite areas. Níall Hedderman, director at Capital A Architecture designed the project and was involved throughout the construction phase. As a listed building, ventilation specification had to be considered carefully to minimise alterations to the building’s structure.


Hedderman explains: “The Vent-Axia Multivent was specified since it minimised the number of penetrations on the external wall, a serious consideration for alterations to a listed building.”


Saving energy and reducing noise


A continuous running MEV system, the Sentinel Multivent H was suitable for the project since its integral humidity sensor is designed for the simultaneous ventilation of separate areas in the home. The integral humidity sensor increases fan speed in proportion to relative humidity levels, saving energy and reducing noise. By reducing moisture levels and removing pollutants in the air such as carbon dioxide, indoor air quality is much improved and helps to create a healthier living environment. “The Sentinel Multivent H was the ideal choice for this property thanks to its ability to provide effective ventilation to multiple rooms in a property; it is recognised in SAP PCDB for a kitchen and up to six wet rooms,” comments Jim Graham, new build residential consultant at Vent-Axia. “Add to this low noise levels of only 18.1dB(A) at 3m and a specific fan power as low as 0.16W/l/s, the lowest SFP figure of any demand control MEV system, making it one of the most efficient products on the market.”


Both energy efficiency and the Multivent’s humidity sensor were key drivers for the MEV system’s specification. Boasting energy efficient EC/DC motors the Multivent helps achieve carbon footprint reduction targets since the motors lose a third less energy to heat than a conventional AC motor. Meanwhile, the integral humidity sensor, which increases fan speed in proportion to relative humidity levels, also reacts to small but rapid increases in humidity, even if the normal trigger threshold is


Adversing: 01622 699116


Ventilation solution adds to impressive basement refurbishment project


not reached. This feature ensures adequate ventilation, even for the smallest wet room. And its night time relative humidity increment setback feature suppresses nuisance tripping as humidity gradually increases with falling temperature. These options are ideal in this type of property that has low levels of natural ventilation.


Advanced control opons


Sentinel Multivent has been designed to meet the exacting demands of developers, installers and users offering advanced control options and easier installation and commissioning. An integral LCD display allows the installer to select appropriate low, normal and boost speeds to meet demand as well as manual and automatic control options. It features plug-and-play automatic sensor detection, an integral adjustable overrun timer and delay on timer and there is the option of wireless control with up to four controllers per system. In buildings suffering from high moisture levels at the point of installation, there is a dry out setting which boosts Sentinel Multivent for one week to assist in removing moisture.


www.vent-axia.com ‘


uVentAxia’s Sennel Mulvent H MEV units provide venlaon to the kitchen, bathroom and three ensuite areas


The Sentinel Multivent H was the ideal choice for this property thanks to its ability to provide effective ventilation to multiple rooms in a property.


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South Ayrshire Council has reduced annual gas costs at its County Buildings headquarters in Ayr by £35K since replacing dated boiler plant with higheciency Remeha Gas 310/610 Eco Pro condensing boilers


Replacement boilers provide £35K annual gas savings for Council D


ata from the Council reveals a fall in gas consumption of 1.2GW when comparing its usage in 2015/2016 with 2017/2018 and taking into account degree days. This equates to a carbon emissions reduction of around 217 tonnes per annum. The historic County Buildings, a Category B (Grade II) listed building, has served as the Council’s headquarters since the beginning of the 20th century. When the building's 25-year-old cast iron sectional boilers came to the end of their operational life, the decision was taken to replace them with three Remeha Gas 310/610 Eco Pro boilers to improve heating reliability and efficiency. With Remeha boilers already installed across its estates, the council was familiar with the brand. Ease of maintenance combined with the quality of training and service support provided were additional influencing factors leading to the specification.


Achieving high-performance heating provision was a key requirement of the Council, which was met by the higher-than-average efficiencies of the Remeha Gas 310/610 Eco Pro boilers. Overcoming the challenge of restricted access to the basement plant room was an additional concern, as a South Ayrshire Council spokesperson explains: “The boilers needed to be craned over the top of the building and through skylights into the basement plant room, so it was essential to select a boiler model that could be easily handled. It was a major feat of logistics, with Road Traffic having to close the area before the crane lift could take place.” The design of the fully-assembled, lightweight Remeha boilers played a crucial part in the success of the project, allowing them to be lifted safely as a complete unit. Their compact dimensions provided an additional benefit, helping overcome the space limitations and ensuring access through the narrow


8 BUILDING SERVICES & ENVIRONMENTAL ENGINEER DECEMBER 2018


skylight. Once inside the plant room, the integral castors on the new Remeha boilers enabled them to be positioned quickly and easily. The Remeha boilers are designed for optimum operation, with the ability to modulate from between 100 per cent down to 18 per cent using their own on-board control system to maximise heating efficiency. Contractors ECG also


upgraded the building’s building management system to improve system control as part of the project. Upgrading older boilers to newer, more energy-efficient equipment is one of the key initiatives adopted by South Ayrshire Council to improve the energy performance of its buildings.


remeha.co.uk VISIT OUR WEBSITE: www.bsee.co.uk


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