Section 3: Oil-fired space and water heating

3.1 Scope of guidance This section provides guidance on the specification of oil-fired space heating and hot water systems14 in dwellings to meet relevant energy efficiency requirements in the Building Regulations. The guidance applies to the following types of oil-fired heating system: • wet central heating systems • range cookers with integral central heating boilers • vaporising appliances providing secondary heating or hot water • fixed independent space heating devices. 3.2 Oil-fired wet central heating systems New systems New systems for oil-fired central heating in new and existing dwellings should meet the minimum standards for: a. boiler efficiency, system circulation, hot water storage, system preparation and commissioning in Table 11 b. boiler interlock, zoning, and time and temperature control of the heating and hot water circuits in Table 12 c. pipework insulation in Table 14. Work on existing systems Components installed as replacements in existing systems should meet the same standards as for new systems, except where indicated otherwise in Table 13. Table 13 in addition identifies good practice upgrades to the rest of the system when making planned and emergency replacements that go beyond the requirements of the Building Regulations. ****Table 11 Recommended minimum standards for efficiency, system circulation, hot water storage, system preparation and commissioning for oil-fired wet central heating systems**** ****Table 12 Recommended minimum controls for oil-fired wet central heating systems[1]**** ****Table 13 Recommended minimum standards when replacing components of oil-fired wet central heating systems[1]**** ****Table 14 Recommended minimum standards for insulation of pipework in oil-fired wet central heating systems**** 3.3 Oil-fired range cookers with integral central heating boilers This section provides guidance on the specification of oil-fired range cookers with integral central heating boilers for space heating and hot water in dwellings. Note: The guidance applies only to twin-burner cooker boilers, which should not be confused with the type of range cooker described as a single burner ‘dry heat’ range cooker. The latter is intended only to provide a cooking function, is not included in SAP 2012 calculations, and does not come within the scope of the Building Regulations energy efficiency requirements. Where oil-fired range cookers with an integral central heating boiler are provided as part of new systems or as replacement components in existing systems: a. The appliance should have two independently controlled burners (one for the cooking function and one for the boiler). b. The SEDBUK 2009 efficiency of the integral boiler should be not less than 80%. c. The manufacturer’s declaration of appliance performance and SEDBUK value should include the following words: i. Seasonal efficiency (SEDBUK) = xx% ii. Case heat emission value = yy kW iii. Heat transfer to water at full load = zz kW iv. The efficiency values may be used in the UK Government’s Standard Assessment Procedure (SAP) for the energy rating of dwellings. The test data from which they have been calculated has been certified by {insert name and/or identification of Notified Body}. If the integral boiler is a condensing boiler, the declaration should make clear whether the efficiency has been calculated in accordance with SEDBUK 2005 or SEDBUK 2009. If it does not, then SEDBUK 2005 must be assumed. See www.rangeefficiency.org.uk. d. The integral boiler should meet the minimum standards for oil-fired central heating systems in Tables 11, 12 and 14 for system circulation, hot water storage, system preparation, commissioning, controls and insulation. 3.4 Continuously-burning oil-fired vaporising appliances providing secondary heating or hot water This section provides guidance on the specification of oil-fired vaporising appliances providing secondary heating or hot water for dwellings. The guidance does not apply to appliances which have been converted from another fuel (for example from solid fuel to oil). Oil-fired vaporising appliances provided with new systems or as replacement components in existing systems should meet the minimum standards for controls in Table 15. ****Table 15 Recommended minimum controls for continuously burning oil-fired vaporising appliances**** 3.5 Oil-fired fixed independent space heating appliances This section provides guidance on the specification of oil-fired fixed independent appliances for primary or secondary space heating in dwellings. Oil-fired fixed independent appliances for primary heating Where oil-fired fixed independent space heating appliances are provided as the primary heat source in new dwellings: a. The efficiency of the appliance (gross calorific value) should be not less than 60%. The appliance manufacturer’s declaration of appliance performance should include the following words: The net efficiency of this appliance has been measured as specified in OFS A102:2004 and the result after conversion to gross using the appropriate factor from Table E4 of SAP 2012 is [x]%. The test data has been certified by {insert name and/or identification of Notified Body}. The efficiency value may be used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating of dwellings. b. Each appliance should be capable, either independently or in conjunction with room thermostats or other suitable temperature sensing devices, of controlling the temperatures independently in areas that have different heating needs (e.g. separate sleeping and living areas). Oil-fired fixed independent appliances for secondary heating Oil-fired fixed independent space heating appliances in new dwellings which are provided as the secondary heat source should have an efficiency (gross calorific value) of not less than 60%. ****Supplementary Information****  

  1. 3.1 Scope of guidance
    1. 3.2 Oil-fired wet central heating systems
      1. 3.3 Oil-fired range cookers with integral central heating boilers
        1. 3.4 Continuously-burning oil-fired vaporising appliances providing secondary heating or hot water
          1. 3.5 Oil-fired fixed independent space heating appliances

            3.1 Scope of guidance

            This section provides guidance on the specification of oil-fired space heating and hot water systems14 in dwellings to meet relevant energy efficiency requirements in the Building Regulations. The guidance applies to the following types of oil-fired heating system: • wet central heating systems • range cookers with integral central heating boilers • vaporising appliances providing secondary heating or hot water • fixed independent space heating devices.  

            3.2 Oil-fired wet central heating systems

            New systems New systems for oil-fired central heating in new and existing dwellings should meet the minimum standards for: a. boiler efficiency, system circulation, hot water storage, system preparation and commissioning in Table 11 b. boiler interlock, zoning, and time and temperature control of the heating and hot water circuits in Table 12 c. pipework insulation in Table 14. Work on existing systems Components installed as replacements in existing systems should meet the same standards as for new systems, except where indicated otherwise in Table 13. Table 13 in addition identifies good practice upgrades to the rest of the system when making planned and emergency replacements that go beyond the requirements of the Building Regulations. ****Table 11 Recommended minimum standards for efficiency, system circulation, hot water storage, system preparation and commissioning for oil-fired wet central heating systems**** ****Table 12 Recommended minimum controls for oil-fired wet central heating systems[1]**** ****Table 13 Recommended minimum standards when replacing components of oil-fired wet central heating systems[1]**** ****Table 14 Recommended minimum standards for insulation of pipework in oil-fired wet central heating systems****  

            3.3 Oil-fired range cookers with integral central heating boilers

            This section provides guidance on the specification of oil-fired range cookers with integral central heating boilers for space heating and hot water in dwellings. Note: The guidance applies only to twin-burner cooker boilers, which should not be confused with the type of range cooker described as a single burner ‘dry heat’ range cooker. The latter is intended only to provide a cooking function, is not included in SAP 2012 calculations, and does not come within the scope of the Building Regulations energy efficiency requirements. Where oil-fired range cookers with an integral central heating boiler are provided as part of new systems or as replacement components in existing systems: a. The appliance should have two independently controlled burners (one for the cooking function and one for the boiler). b. The SEDBUK 2009 efficiency of the integral boiler should be not less than 80%. c. The manufacturer’s declaration of appliance performance and SEDBUK value should include the following words: i. Seasonal efficiency (SEDBUK) = xx% ii. Case heat emission value = yy kW iii. Heat transfer to water at full load = zz kW iv. The efficiency values may be used in the UK Government’s Standard Assessment Procedure (SAP) for the energy rating of dwellings. The test data from which they have been calculated has been certified by {insert name and/or identification of Notified Body}. If the integral boiler is a condensing boiler, the declaration should make clear whether the efficiency has been calculated in accordance with SEDBUK 2005 or SEDBUK 2009. If it does not, then SEDBUK 2005 must be assumed. See www.rangeefficiency.org.uk. d. The integral boiler should meet the minimum standards for oil-fired central heating systems in Tables 11, 12 and 14 for system circulation, hot water storage, system preparation, commissioning, controls and insulation.  

            3.4 Continuously-burning oil-fired vaporising appliances providing secondary heating or hot water

            This section provides guidance on the specification of oil-fired vaporising appliances providing secondary heating or hot water for dwellings. The guidance does not apply to appliances which have been converted from another fuel (for example from solid fuel to oil). Oil-fired vaporising appliances provided with new systems or as replacement components in existing systems should meet the minimum standards for controls in Table 15. ****Table 15 Recommended minimum controls for continuously burning oil-fired vaporising appliances****  

            3.5 Oil-fired fixed independent space heating appliances

            This section provides guidance on the specification of oil-fired fixed independent appliances for primary or secondary space heating in dwellings. Oil-fired fixed independent appliances for primary heating Where oil-fired fixed independent space heating appliances are provided as the primary heat source in new dwellings: a. The efficiency of the appliance (gross calorific value) should be not less than 60%. The appliance manufacturer’s declaration of appliance performance should include the following words: The net efficiency of this appliance has been measured as specified in OFS A102:2004 and the result after conversion to gross using the appropriate factor from Table E4 of SAP 2012 is [x]%. The test data has been certified by {insert name and/or identification of Notified Body}. The efficiency value may be used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating of dwellings. b. Each appliance should be capable, either independently or in conjunction with room thermostats or other suitable temperature sensing devices, of controlling the temperatures independently in areas that have different heating needs (e.g. separate sleeping and living areas). Oil-fired fixed independent appliances for secondary heating Oil-fired fixed independent space heating appliances in new dwellings which are provided as the secondary heat source should have an efficiency (gross calorific value) of not less than 60%. ****Supplementary Information****