BS 5918:2015 Solar heating systems for domestic hot water. Code of practice for design and installation

BS 5918:2015

Solar heating systems for domestic hot water. Code of practice for design and installation

Status : Current   Published : January 2015



What is this standard about?

In the wake of increased uptake for such systems to provide domestic hot water and the provision of UK Government subsidies, this standard explains how to design and install solar heating systems.

Who is this standard for?

  • Solar heating designers
  • Installers, suppliers and specifiers 

Why should you use this standard?

This revision updates the original 1989 standard, following recent technological developments and assessing existing best practice. It includes details of current test methods and terminology, plus important new safety guidance.

What’s changed since the last update?

The scope of the standard has been extended. The revised version includes a much wider range of buildings than just the single, family dwellings covered before. It also deals with the wider range of material types now on the market.

Along with specifications for high performance solar collectors, insulation and safety components, the new standard includes:

  • Financial and environmental information
  • Installation techniques to mitigate faulty systems
  • Methods for expansion vessel sizing
  • A new UK solar irradiation map
  • A reflectance radiation factor table
  • A method to assess bacterial risks

Standard NumberBS 5918:2015
TitleSolar heating systems for domestic hot water. Code of practice for design and installation
Publication Date31 January 2015
Normative References(Required to achieve compliance to this standard)BS 1566, BS 4213, BS 6213, BS 6920, BS 7671, BS 8000, BS 8000-15, BS 8558, BS 8580, BS EN 806, BS EN 1990, BS EN 1991-1-1, BS EN 1991-1-3, BS EN 1991-1-4, BS EN 1993-1-1, BS EN 1995-1-1, BS EN 12897, BS EN 12975-1, BS EN 12977, BS EN 12977-3, BS EN 12977-5:2012, BS EN 14437, BS EN 60730-2, BS EN 60730-2-9, BS EN ISO 11600, BS EN ISO 9488, BS EN ISO 9806
Informative References(Provided for Information)BS 476-3, BS 838, BS 903-0, BS 1982, BS 5250, BS 5615, BS 7431, BS 8206-2, BS EN 1057, BS EN 1111, BS EN 1287, BS EN 10255, BS EN 12828, BS EN 12976, BS EN 12976-1:2006, BS EN 12977-1:2012, BS EN 15092, BS EN 15316-4-3, BS EN 15459, BS EN ISO 14040, BS ISO 3302, BS ISO 15686-5, ISO 9553, ISO/TR 10217, PAS 2050, Pressure Equipment Regulations 1999, Control of Substances Hazardous to Health Regulations, 2002, Control of Substances Hazardous to Health Regulations, 2003, Building Regulations 2010 (England and Wales), Building Regulations (Northern Ireland) 2012, Building (Scotland) Regulations 2004, The Water Supply (Water Fittings) Regulations 1999, The Water Supply (Water Fittings) (Byelaws), The Water Supply (Water Fittings) Regulations, (Northern Ireland) 2009Scotland 2014, BS 3955, BS 5427-1, BS 5502-20, BS 5502-80, BS 5516-1, BS 5534, BS 5974, BS 6229, BS 6915, BS 7021, BS 8103-2, BS 8103-3, BS 8213-4, BS 8217, BS 8218, BS 8219, BS 8233, BS 8560, BS 9250, BS EN 1027, BS EN 1999-1-1, BS EN 12588, BS EN 55014, PD CEN/TR 15601
ReplacesBS 5918:1989
Draft Superseded By12/30177610 DC13/30274184 DC
DescriptorsWater heaters, Heaters, Domestic, Household equipment, Legislation, Solar heating, Solar power, Solar collectors, Design, Performance, Control systems, Performance testing, Hot-water supply systems, Installation, Commissioning, Maintenance, Pressure testing, Leak tests, Type testing, Weather resistance, Thermal testing, Loading, Dead loading, Climatic loading, Imposed loading, Snow loading, Wind loading, High-temperature testing, Thermal-shock tests, Testing conditions, Solar-powered devices, Flow rates, Grades (quality), Inspection, Design calculations, Watertightness tests, Temperature control, Roof spaces, Water supply (buildings)
ISBN978 0 580 61963 2
File Size1.289 MB

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