5.5.1 General CD/30 (Oil Condensing Boiler Installation Assessment Form) General Technician Stationary...

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1 5.5.1 General CD/30 (Oil Condensing Boiler Installation Assessment Form) General Technician Stationary CD/40 Energy Efficiency Checklist Work Notification England and Wales General Work Notification How to Register your Works Online How to Register your Works by Fax Safe Electrical Isolation Safe Electrical Isolation SECTION 6 REGIONAL REQUIREMENTS 6.1 Regional Requirements Introduction England The Building Regulations England and Wales Statutory Instruments Competent Persons Work Notification Minimum Provisions for New Systems in New and Existing Dwellings Minimum Provisions for Replacement Systems in Existing Dwellings Minimum Provisions for New Non-Domestic Systems in New Buildings Minimum Provisions for Rep ment Non-Domestic Systems in Existing Buildings Approved Document G Means of Ventilation Electrical Works (Approved Document P (Part P)) Contact Details Wales The Building Regulations England and Wales Statutory Instruments Competent Persons Work Notification Minimum Provisions for New Systems in New and Existing Dwellings Minimum Provisions for Replacement Systems in Existing Dwellings Minimum Provisions for New Non-Domestic Systems in New Buildings Minimum Provisions for Rep ment Non-Domestic Systems in Existing Buildings. 16 AMD Edition Contents Page XIII

2 6.3.9 Approved Document G Means of Ventilation Electrical Works (Approved Document P (Part P)) Contact Details Scotland The Building (Scotland) Regulations Scottish Statutory Instruments Building Warrant Scheme Where a Building Warrant is required Minimum Provisions for New Systems in New and Existing Dwellings Minimum Provisions for Replacement Systems in Existing Dwellings Minimum Provisions for New Non-Domestic Systems in New Buildings Minimum Provisions for Rep ment Non-Domestic Systems in Existing Buildings Carbon Monoxide Detection Electrical Works Contact Details Northern Ireland The Building Regulations (Northern Ireland) Statutory Rules Work Notification Minimum Provision for New Systems in New and Existing Dwellings Minimum Provision for Replacement Systems in Existing Dwellings Minimum Provision for New Non-Domestic Systems in New Buildings Minimum Provision for Rep. Non-Domestic Systems in Existing Buildings Means of Ventilation Carbon Monoxide Detection Electrical Works Contact Details Republic of Ireland The Building Regulations 1997 (Technical Guidance Documents) Statutory Instruments Minimum Provision for New Systems in New Dwellings Minimum Provision for New/Replacement Systems in Existing Dwellings Appliance Installation Carbon Monoxide Detection Electrical Works Contact Details Jersey The Jersey Building Byelaws Work Notification Minimum Provision for New Systems in New and Existing Dwellings Minimum Provision for Replacement Systems in Existing Dwellings Minimum Provision for New Non-Domestic Systems in New Buildings Minimum Provision for Rep. Non-Domestic Systems in Existing Buildings Electrical Works Page XIV Contents 2010 Edition

3 6.7.8 Contact Details Guernsey Guernsey Approved Documents Control of Building Work Work Notification Minimum Provision for New Systems in New Dwellings Minimum Provisions for New or Replacement Systems in Existing Dwellings Electrical Works Contact Details Isle of Man The Building Regulations Statutory Documents Work Notification Minimum Boiler SEDBUK Eff. (%) for New Build and Rep. Oil Fired Boilers Oil Fired Heating Systems and Controls Electrical Works Contact Details SECTION 1 Diagram 1 Condensing Boiler (Example 1)... 3 Diagram 2 Condensing Boiler (Example 2)... 3 Diagram 3 Flue Gas Temperatures from Standard and Condensing Appliances... 4 Diagram 4 Human Plume... 5 Diagram 5 Condensate to Stack... 7 Diagram 6 Condensate to Waste Pipe... 8 Diagram 7 Condensate to a Soakaway... 9 Diagram 8 Condensate to External Drain... 9 Diagram 9 Vaporising Range Cooker Diagram 10 Pressure Jet Range Cooker Boiler Diagram 11 Roomheater (Stove) Diagram 12 Oil Fired Appliance Flue Gas, Casing and Hearth Temperatures Diagram 13a Chimney and Flue Definitions Diagram 13b Chimney and Flue Definitions Diagram 13c Chimney and Flue Definitions Diagram 14 How Chimneys Work Diagram 15a The General Effect of Wind Pressure on Various Types of Buildings Diagram 15b Vaporising Appliance Flue Terminal Guidance (Pitched Roof) Diagram 15c Vaporising Appliance Flue Terminal Guidance (Flat Roof) Diagram 16 Flue Draught Stabiliser Diagram 17 The Separation of Combustible Material from Factory Made Insulated Metal Chimneys meeting BS EN Diagram 18 Bends Permitted for Flue Offsets Diagram 19 Vertical Balanced Compartment Flue Diagram 20a Flue Termination on Clearance from Skylight Diagram 20b Clearances advised by British Standard BS 5410 Part Diagram 20c Separation Between a Boundary and Terminal at Right Angles Diagram 21 Condensing Appliance Flue Termination Recommendations Edition Contents Page XV

4 Diagram 22 Diagram 23 Diagram 24 Diagram 25 Free Area of Grilles are mm 2 per kw of Appliance Maximum Rated Output over 5kW Free Area of Grilles are mm 2 per kw of Appliance Maximum Rated Output over 5kW Example Layout Details for a Vaporising Oil Fired Appliance and Extraction Fan Example Layout Details for a Pressure Jet Oil Fired Appliance and Extraction Fan Table 1 Chimney Pressure Designation Table 2 Examples of Chimney Designations Table 3 Safety Installation Requirements for Factory Made Insulated Metal Chimneys serving Oil Fired Boilers Table 4 Safety Installation Requirements for Flue Pipes serving Oil Fired Boilers discharging Flue Gas Temperatures Below 250 C Table 5 Materials for Flue Pipes and Chimneys for Oil Fired Appliances SECTION 2 Diagram 26 Fuel Application... 2 Diagram 27 Cast Iron Sectional Boiler... 6 Diagram 28 Warm Air Heater... 9 Diagram 29 Air Supply Requirements for Open Flued Appliance(s) Diagram 30 Air Supply Requirements for Balanced Flued Appliance(s) SECTION 3 Diagram 31 General Arrangement of a Domestic Central Heating System... 3 Diagram 32 Heating System Component Names... 4 Diagram 33a Static Heads at Different Points on the Circuit... 8 Diagram 33b Circuit Pressures with Pump Flow... 8 Diagram 33c Circuit Pressures with Pump in Return... 9 Diagram 34 Static Head and Open Safety Vent Pipe Diagram 35 Close Coupled Open Safety Vent Pipe and Feed and Expansion Pipe Diagram 36a Feed Path Through By-Pass Diagram 36b Feed Path Through (Mid-Position) Diverter Valve Diagram 37 Sealed Systems Diagram 38 (Historical) Heating System with Gravity Primary Circulation Diagram 39 (Historical) Provision of Independent Space & DHW Temperature Control Whilst Retaining Gravity Supply Circuit Diagram 40 Conversion of Gravity Primary System to Fully Pumped Circulation as Required by Building Regulations Diagram 41 Fully Pumped Heating System with Motorised Diverter/Mid-Position Valve as Required by Building Regulations Diagram 42 Fully Pumped Heating System with two Motorised Zone Valves as Required By Building Regulations Diagram 43 Fully Pumped Heating System with Two Circulating Pumps as Required By Building Regulations Diagram 44 Fully Pumped Sealed System with Approved Type Boiler as Required by Building Regulations Diagram 45 Automatic and Solid Fuel Fired Heating to the Same House Page XVI Contents 2010 Edition

5 Diagram 46a Fully Automatic Vaporising Range Cookers Boiler Illustrating an Example of a Fully Pumped System Diagram 46b Fully Automatic Vaporising Stove Boiler Illustrating an Example of a Fully Pumped Circuit Diagram 47 Radiator Installation Diagram 48 Convector Heaters Diagram 49 Section Through Underfloor Heating Laid in Solid Floor Diagram 50 Indicative Solar Heating System Layout Utilising a Dual Coil Domestic Hot Water Storage Cylinder Diagram 51 Schematic Diagram Showing a General Frost Protection Circuit Diagram 52 Typical Control System to Update an Older Gravity Primary Type Ins Diagram 53 Independent Control of Space and Water Heating Circulation in a Fully Pumped System with One Motorised Diverter Valve Diagram 54 Independent Control of Space and Water Heating Circulation in a Fully Diagram 55 Pumped System with Two Motorised Valves Independent Control of Space and Water Heating Circulation in a System Fitted with Two Circulating Pumps Diagram 55a Independent Control of Two Space and One Water Heating Circulation Zones in a Fully Pumped System with Three Motorised Valves SECTION 4 Diagram 56 Insulation of a Wall Cavity... 7 Diagram 57 Insulating an Internal Wall... 8 Diagram 58 Floor Insulation Diagram 59a Sealed Unit Fitted in Glazing Bar Diagram 59b Secondary Double Glazing Diagram 59c Curtains Hanging down onto Shelf over Radiator Diagram 60a Laying Glassfibre Quilt on a Loft Floor Diagram 60b Soffit Ventilation Diagram 60c Preferred Relationship Between Pipes, Cabling and Insulation Diagram 61 Insulation of Cisterns and Pipes Diagram 62 Insulating Difficult and Flat Roofs Diagram 63 Draught Reduction Measures Diagram 64 A Heat Recovery System Table 6 SEDBUK Efficiency Classes... 2 Table 7 SAP 2009 Fuel Factors... 3 SECTION 5 Diagram 65 OFTEC Oil Warning Sticker... 4 Diagram 66 CD/10 Form... 6 Diagram 67a CD/11 Form (Front) Diagram 67b CD/11 Form (Back) Diagram 68a CD/14 Form 13 Diagram 68b CD/30 Form Diagram 69 CD/40 Form Diagram 70 Building Regulations Work Notification Fax SECTION 6 Table 8 Registration Qualification and Notification Requirements Table 9 Registration Qualification and Notification Requirements Table 10 Registration Qualification and Notification Requirements Table 11 Registration Qualification and Notification Requirements Edition Contents Page XVII

6 1.1 Appliance Types General APPLIANCES UP TO 45kW OUTPUT Nearly all boilers on the market have a pressure jet burner. These are often simpler to service and more reliable than the older vaporising boilers of yesteryear. They are also less sensitive to flue conditions. A properly set up pressure jet burner is highly efficient at converting fuel to heat. Oil fired boilers with seasonal efficiencies of over 90% are available from many manufacturers. The appliance selected must be able to meet the calculated space and water heating loads under the specified condition as per BS EN and BS EN (see Section 1.9 and The Domestic Heating Design Guide). It is important that the appliance output is matched to the heat load of the building to achieve peak efficiency and performance. On boiler replacement, a key part of the specification is to perform an accurate assessment of the building to determine the total heat load taking into account energy efficiency measures that have been made since the last installation to reduce heat loss through the building fabric. Such measures can include double glazing, cavity wall and loft insulation. The historical method of like-for-like boiler replacement is not an acceptable approach as this often results in boilers being oversized leading to very short burner firing cycles, increased fuel consumption and higher carbon emissions. For replacement installations a quick calculation of output can be carried out utilising the Whole House Boiler Sizing Method. (Available from It is very important to ensure that the boiler does not have to operate with a return water temperature lower than that required by its manufacturer. In general, steel and cast iron boilers can tolerate a 40 C return temperature, although some are designed to accept lower temperatures during normal operation whilst the system (for non-condensing boilers) is balanced to maintain a 10 C temperature differential between flow and return. Very low return water temperatures cause condensation of acids in the flue gases to occur and these can attack ferrous surfaces causing internal damage and in turn leaks. Condensing boilers are designed to cope with this, usually based on a system with a designed temperature differential of (circa) 20ºC between flow and return. Regional requirements define minimum efficiencies for appliance types for new and replacement appliances (see Section 6 for Regional Requirements). British Standard 5410: Part 1 defines installation requirements for oil fired appliances with a rated output capacity of up to 45kW. However the following appliance types are available up to 70kW which when installed as single domestic appliances within the dwelling space should be installed as per manufacturer s instructions. Page 1 Section Edition