Conservation of fuel and power: Approved Document L, Volume 1 — Dwellings

O N L I N E V E R S I O N L1(b), L2 Oil-fired heating systems 6.8 An oil-fired heating system that is either part of a new system or is a replacement component in an existing dwelling should meet the minimum efficiencies in Table 6.3, in addition to the general requirements for heating and hot water systems in Section 5. Table 6.3 Minimum efficiencies for oil-fired heating systems in existing dwellings System type Minimum efficiency Notes Wet heating – regular boiler 91% (as defined in ErP(1)) Or, in exceptional circumstances(2) in existing dwellings, 84% SEDBUK 2009 Wet heating – combi-boiler 86% (as defined in SEDBUK 2009) Or, in exceptional circumstances(2) in existing dwellings, 82% Range cooker with integral central 80% Follow paragraph 6.9 heating boiler Fixed independent space heating 60% (converted using Table E4 of the Standard Assessment Procedure) NOTES: 1. Energy Related Products Directive. For Standard Assessment Procedure modelling, SEDBUK values should be used. 2. Exceptional circumstances are defined in the ODPM’s Guide to the Condensing Boiler Installation Assessment Procedure for Dwellings. 6.9 An oil-fired range cooker with an integral central heating boiler (within a single appliance body) that is either part of a new system or is a replacement component in an existing dwelling should have two independently controlled burners (one for the cooking function, and one for the boiler). NOTE: This paragraph does not apply to appliances with fully independent boiler and cooker parts within a shared case. In this case, the boiler should be treated as a conventional oil-fired boiler. 6.10 If a continuously burning oil-fired vaporising appliance is provided for secondary heating or hot water, one of the following should be met, depending on the type of appliance. a. For a manually operated appliance, no further control is required above the integral manual controls that the appliance manufacturer provided. b. For an electrically operated appliance, an integral remote or thermostatic control should be provided. NOTE: This guidance does not apply to appliances that have been converted from another fuel. Electric space heating systems NOTE: Electric resistance heating is assumed to be 100% efficient, therefore no minimum efficiency is set for these types of system. NOTE: This section of the guidance does not cover either of the following. a. Electric heat pumps (guidance is provided in paragraphs 6.36 to 6.43). b. Portable electric heating devices. 6.11 Electric heating systems should meet the guidance in paragraphs 6.12 to 6.14, in addition to the general requirements for heating and hot water systems in Section 5. 42 Approved Document L Volume 1, 2021 edition Building Regulations 2010 O N L I N E V E R S I O N