Big Book of Hamworthy Products and Services

44 Products that perform | Service that delivers | People that care MODELS kW OUTPUT Ensbury boiler 440-580 3 Boiler model Unit ELT440 ELT510 ELT580 Energy Building regulation seasonal efficiency gross % 85.07 85.11 84.97 Boiler output 80/60 °C kW 440 510 580 Boiler input (gross) maximum kW 537 622 707 Boiler input (net) maximum kW 483 560 637 Boiler output minimum 80/60 °C kW 100 100 165 Water Design flow rate @ 20°C ∆ T rise l/s 5.26 6.1 6.94 Water side pressure loss @ 20°C ∆ T rise mbar 20 27 35 Design flow rate @ 10°C ∆ T rise l/s 10.53 12.2 13.88 Water side pressure loss @ 10°C ∆ T rise mbar 81 108 140 Water flow rate - minimum l/s No minimum flow rate Operating water pressure - maximum (minimum) barg 4 (0.5) 4 (0.5) 4 (0.5) Operating water temperature - maximum (minimum) °C 90 (60) 90 (60) 90 (60) Water return temperature - minimum °C 15 15 15 Gas Gas flow rate natural gas (G20) - maximum m 3 /h 51.2 59.3 67.4 Gas inlet pressure natural gas (G20) - nominal (maximum) mbar 20 (50) 20 (50) 20 (50) Flue Approx. flue gas volume @ 15°C, 9% C0 2 , N.T.P m 3 /h 614.9 707.1 830.1 Flue gas temperature @80/60 °C °C 182 192 197 NO x emission (0% excess oxygen, dry air free) European Class 5 mg/kWh 80-100 80-100 80-100 Combustion chamber resistance mbar 2.53 3.83 5.86 Misc. Nominal supply voltage - for boiler 230V 1Ph 50Hz Approx. shipping weight - excluding burner kg 973 976 980 Technical data A 100% liquid biofuel boiler from Hamworthy proved to be the greenest heating option for a mixed use development in Hoxton, East London. Hamworthy’s Ensbury LT steel boiler using B100 biodiesel and a high/low three-phase Dunphy burner specifically matched to the fuel was specified for the project to provide the space heating for this city centre development of 16 flats and a commercial unit. Due to the city centre location, a site specific dispersion modelling impact assessment to identify any problems for surrounding properties was required. Biofuel was shown to be superior to biomass, as it is a cleaner fuel thanks to no grit or other particular matter in the flue gases. Also, less storage space is required for biodiesel, which is ideal for city centre locations. John Moore, Operations Director from Mulalley – the main contractors on the project commented, “Working with Hamworthy Heating on this project ensured the installation went smoothly and kept to projected timescales.” Geoff Fox, from Fox Curtis Murray said, “Liquid biofuel presents a sustainable alternative to fossil fuels and also qualifies for the Renewable Heat Incentive scheme which reduces the actual fuel costs accordingly.” A Wessex ModuMax condensing boiler was supplied as a standby boiler for service periods. Additionally, a Chesil pressurisation unit with matched expansion vessel ensures the correct pressure is maintained. ‰‰ Residential & commercial new build property Project ‰‰ Ensbury LT boiler ‰‰ Wessex ModuMax boiler Products Case study Mixed use development, London

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