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

R40, R40OAN L I N E V E R S I O N 9.5 For new buildings, information provided in the log book should also include all of the following. a. Data on the inputs used in the calculations of target primary energy rate, target emission rate, building primary energy rate and building emission rate. b. The recommendations report generated with the ‘on-construction’ energy performance certificate. 9.6 Where building automation and control systems are installed in a new building, information about the energy performance of the building automation and control systems should also be given to the building owner. Additional information for work in existing buildings 9.7 For existing buildings, information added to a new or existing log book should satisfy paragraphs 9.1 to 9.3. This applies only in relation to the work that has actually been carried out. Information provided should also include all of the following, where relevant. a. Any new, renovated or upgraded thermal elements. b. Any new or renovated windows, roof windows, rooflights or doors (controlled fittings). c. Any newly installed energy meters. 9.8 For existing buildings, when any building work is carried out for which Section 5 and/or Section 6 of this approved document sets a standard, the energy performance of the fixed building services and on-site electricity generation affected by the work should be assessed and documented. 9.9 For existing buildings, when installing a complete new or replacement system (e.g. replacing a heating system including the heating appliance, pipework and heat emitters), the energy performance of the whole system should be assessed, and the results documented and handed over to the building owner with the manufacturer’s supporting literature. The record of energy performance results may be any of the following. a. A documented assessment using an approved methodology, such as a new energy performance certificate. b. A documented assessment of the installed system produced in accordance with Ecodesign and associated energy labelling requirements. c. A documented assessment of a reasonably representative complete system produced by the product manufacturer. d. Another equivalent assessment carried out by a suitably qualified person. 9.10 When carrying out work on an existing system, such as installing or replacing components (e.g. replacing a boiler but retaining the pipework and heat emitters), the energy performance of the new components should be assessed. The results should be recorded and given to the building owner. The record of energy performance results may be any of the following. a. Product data sheets from the product manufacturer. b. Other documented results of energy assessment of the product carried out in accordance with relevant test standards. 66 Approved Document L Volume 2, 2021 edition Building Regulations 2010 O N L I N E V E R S I O N