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

L1(b), L2 O N L I N E V E R S I O N Intention In the Secretary of State’s view, requirements L1(b)(i), (ii) and L2 are met in a new building by achieving all of the following. a. Fixed building service that meet the minimum efficiencies in Section 6 are provided. b. Controls to fixed building services are provided that both: i. meet the general controls for heating systems in paragraphs 5.11, 5.12 and 5.14 to 5.16 ii. meet the system specific controls in Section 6. c. Any on-site electricity generation is both appropriately sized and has controls. In the Secretary of State’s view, requirements L1(b)(i), (ii) and L2 are met in existing buildings by achieving all of the following. a. Any fixed building services installed meet the minimum efficiencies in Section 6 and the criteria in paragraph 5.4. b. Any fixed building services installed have controls that both: i. meet the standards for general controls for heating systems in paragraphs 5.6, 5.11, 5.12 and 5.14 to 5.16 ii. meet the standards for system specific controls in Section 6. c. Any on-site electricity generation is both appropriately sized and has controls. 34 Approved Document L Volume 2, 2021 edition Building Regulations 2010 O N L I N E V E R S I O N