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England · Statutory guidance

Conservation of fuel and power: Approved Document L, Volume 2 — Buildings other than dwellings

Energy performance guidance for non-domestic buildings, covering fabric, services, controls and commissioning.

Energy & sustainability
Open original PDF at page 109

Source wording and page order preserved. Drawings and table layouts remain available in the original PDF.

O N L I N E V E R S I O N FAF BS EN 15502-2-1 Gas-fired central heating boilers. Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW [2012 + A1: 2016] BS EN 15502-2-2 Gas-fired central heating boilers. Specific standard for type B1 appliances [2014] BS EN 16798-3 Energy performance of buildings. Ventilation for buildings. For non-residential buildings. Performance requirements for ventilation and room-conditioning systems [2017] BS EN ISO 12241 Thermal insulation for building equipment and industrial Installations. Calculation rules [2008] BS EN ISO 12567 Thermal performance of windows and doors. Determination of thermal transmittance by the hot-box method BS EN ISO 12567-1 Complete windows and doors [2010] BS EN ISO 12567-2 Roof windows and other projecting windows [2005] BS EN ISO 13370 Thermal performance of buildings. Heat transfer via the ground. Calculation methods [2007 incorporating corrigendum March 2009] BS EN ISO 16484 Building automation and control systems (BACS) [2017 + A1: 2020] 999999 BBBuuuiiillldddiiinnnggg RRReeeggguuulllaaatttiiiooonnnsss 222000111000 AAApppppprrrooovvveeeddd DDDooocccuuummmeeennnttt LLL VVVooollluuummmeee 222,,, 222000222111 eeedddiiitttiiiooonnn O N L I N E V E R S I O N

Edition and local adoption determine which requirements apply. Use the publisher’s document for the complete clauses, diagrams and amendments.