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HPM September 2017

18 I N D U S T RY WAT C H An invaluable installation option Neil Macdonald, technical manager at the Heating and Hotwater Industry Council In April 2005, changes to Part L of the Building Regulations all but created a mandate, requiring condensing boilers to be installed in all normal circumstances at the time of boiler replacement. The subsequent surge in condensing boiler sales brought new considerations for heating engineers to tackle, and alongside condensate discharge pipework, in particular these related to installation of the boiler flue/chimney, and its point of termination. No longer was siting of the flue/chimney – in accordance with the manufacturers’ instructions – only influenced by heat-related factors, for example, potential damage to eaves, or ensuring products of combustion could not recirculate, or enter the building and others nearby, but there was then, as there is now, a need to consider the potentially complex and subjective nature of nuisance pluming from condensing boiler flue terminals. Condensing boilers We all know that condensing boilers emit a plume of condensate, particularly in colder weather, and while manufacturers’ installation instructions will generally echo the guidance of Part L and the Domestic Building Services Compliance Guide (which mentions the need to consider nuisance), they frequently focus on the minimum flue terminal clearances needed to ensure the flue operates safely, and to design specification. Individual site conditions will vary, and should pluming from a condensing boiler flue-terminal be deemed a statutory nuisance, there is a very real chance that the local authority may insist on it being re-sited, as well as the potential for civil action, most likely to come from the client or neighbour. Therefore, the need for installers to remain vigilant when specifying or installing condensing boiler flue terminations over and above compliance with the appliance manufacturers’ minimum clearances, is more important than ever. Since 2005, the rise of approved boiler plume management kits (PMKs) has provided the installer with an invaluable installation (HHIC), takes a close look at plume management TRUSTED BY THE BEST Sometimes innovation goes unseen, existing only in the knowing glances of our talented engineers. Speedfit Technology is one such innovation with many interesting stories to tell. Billions of JG fittings are used around the world and are often found where least expected. Prestigious brands like Ferrari ®, Heineken ® and BT ® have trusted us for decades. Why? Because the same precision engineering, extensive research and rigorous testing go into all of our fittings from plumbing to drinks dispense to air compression & automotive. A plume management kit


HPM September 2017
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