Ventilation: Approved Document F, Volume 1 — Dwellings

OFN L1I(N2E ) V, ERR S3I O9N, R42, R44 Section 4: Commissioning and providing information Air flow rate testing and commissioning of ventilation systems 4.1 Mechanical ventilation systems must be commissioned to provide adequate ventilation. A commissioning notice must be given to the building control body. 4.2 Air flow rates for mechanical ventilation in new dwellings must be measured. A notice of the measured air flow rates must be given to the building control body. NOTE: Paragraphs 4.1 and 4.2 apply to intermittent extract as well as continuous mechanical ventilation systems. 4.3 The person responsible for commissioning should complete air flow measurement test and commissioning sheets including, as a minimum, all information in Part 3 of the example sheet given in Appendix C. NOTE: When mechanical ventilation is commissioned, the use of fuel and power should also be considered in accordance with Part L of the Building Regulations (L1(b) of Schedule 1). Installers may provide notice of commissioning to cover Part F (F1(2) of Schedule 1) and Part L in the same document. Inspection standards 4.4 Ventilation systems should be inspected and tested in accordance with paragraphs 4.5 to 4.12. Background ventilators and intermittent extract ventilation 4.5 For background ventilators, all of the following measures should be undertaken and the results recorded using the checklist in Appendix C. a. The minimum equivalent area for background ventilators from Table 1.7 should be identified and recorded. b. The actual equivalent area and location of installed background ventilators should be recorded. c. Checks should be made to determine that the background ventilator controls work and that they open and close correctly. d. The quality of the installation of the ventilator product should be checked to ensure it is correctly mounted within the wall or window aperture. 4.6 For intermittent extract fans, the installer should carry out checks to establish the following. a. That the fans operate correctly. b. That the fans respond correctly to the controls provided with the installation. c. That any run-on timers are set to at least 15 minutes. 31 Building Regulations 2010 Approved Document F Volume 1, 2021 edition O N L I N E V E R S I O N