56 HEATING, VENTILATION & SERVICES FOCUS
these obstacles. Doing ducting drawings is not easy, but ‘quality’ manufacturers will be able to provide these for you, so be sure to take advantage of this service.
INSTALLATION: DON’T CUT CORNERS Over the years we have seen just about all the mistakes that could be made onsite, from installers trying to simplify duct runs to save time and money; using fl exible duct work at fi nal connections or around obstructions such as steel beams; using the wrong size air bricks and incorrect size air valves; not using ducting insulation, and a whole lot more. With the revised Building Regulations
‘Approved Document F, Volume 1: Dwellings’ (ADF1), which came into effect in 2022, the ventilation rate calculations have been considerably simplifi ed and reporting has been tightened up to drive compliance and, ultimately, system quality.
as ducting silencers, aerodynamic bends and pollutant fi lters. In addition, it should be accompanied by dedicated ducting insulation, and fi restopping products.
START WITH THE ‘BUILDING BLOCKS’ Of course, you can have the best ventilation products in the world, but if the system design is not up to scratch,
then it won’t lead to the results you expect. So quality matters here too. While some might think the ventilation unit should be the starting point, it’s actually the ducting drawing that needs to come fi rst before unit specifi cation and before the other services (gas, water pipes etc) going in, as otherwise you will need to add more duct work to get around
Quality does come at a cost and there will always be a balance between these two factors. But quality ventilation products are often designed with easy – and therefore quick – installation in mind. Opting for lower cost products may well end up being a false economy.
Paul Williams is product manager at Domus Ventilation
WWW.HBDONLINE.CO.UK
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76
