Building Services News l January/February 2020
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An historic listed building in Dublin’s Mountjoy Square has been refurbished to provide 32 warm and comfortable residential units for Respond Housing, one of Ireland’s leading housing agencies. The comfort and wellbeing of the residents was a top priority and so the design team turned to Baxi Potterton Myson to provide the heating and hot water solution.
The centralised boiler plant room consists of three Potterton Sirius three wall hung 90kW stainless steel boilers installed in a cascade. This supplies heating and hot water to individual apartments via Heatrae Sadia Hi-Max heat interface units which are installed in each one to control and meter the occupant’s specific heating and hot water requirements. The Potterton Sirius three wall hung boiler is available in outputs up to 150kW, all with the same compact footprint, and lightweight stainless steel heat exchanger for reliable and energy efficient heat transfer. It has a gross seasonal efficiency of up to 97.3%, best-in-class low NOx, and its wide modulation ratio of 9:1 reduces constant on/off cycling to help save energy. The Potterton Sirius WH Cascade can accommodate from two to six boilers up to a total of 700kW. OmegaFlex Trac-pipe is used for gas pipework and all pipe fittings have quick and easy jointing, to save time and effort. It comes with a Class A primary circulator pump. The Hydraulic System Manager option acts as a low loss header, dirt separator, magnetic filter, air separator and flow velocity manager. This removes air, dirt and metal to ensure clean system water and prevent noise. The Hi-Max Instant ID heat interface unit from Heatrae Sadia is designed to provide both central heating and domestic hot water to dwellings which are served by either a district heating scheme or a centralised boiler system. It has two plate heat exchangers – one for the hot water and one for the apartment heating system. The use of pressure
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independent control valves (PICV) and proportional integral derivative (PID) controls maximises energy efficiency and stabilises the heat output. By ensuring the primary return temperatures going back to the district heating system are low, it operates highly efficiently. It is compact enough to fit in a standard kitchen cupboard. Because there is no need for a boiler flue or an annual gas safe service, the Hi-Max is the perfect solution for district heating in multi-occupancy buildings. Richard Louth, Commercial Specification Sales Manager at Baxi Potterton Myson and Ian Robinson, Multi Occupancy Sales Director, Heatrae Sadia, worked closely with the design team and Shane Connors of Smart Style Renewables, to support the delivery, installation and setup of the heating system. “We are very pleased with the performance of the equipment used on this listed building,” said Shane. “The Hi-Max units are producing exceptionally efficient heat transfer. This is our first time using this product and hopefully we will get a chance to use it again,” he concluded. The refurbishment project was overseen by Ted Carroll of Douglas Carroll & Associates, consulting engineers, and construction work and refurbishment was carried out by Blacklough Construction. Products were supplied through DPL Group Ltd. For more information about Potterton Commercial Sirius three visit pottertoncommercial.co.uk and for Hi-Max Instant D visit heatraesadia.com or contact Baxi Potterton Myson at Tel: 01 - 459 0870. Q
05/02/2020 07:56
