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domestic heating by gas: boiler systems guidance for installers and specifiersCE302Domestic heating by gas: boiler systems guidance for installers and specifiers (2008 edition)ContentsIntroduction to best practice 1. 3Boiler efficiency 4Energy consumption and emissions 4Environmental impact of gas heating 5UK building regulations 2. 6Introduction 6General requirements 6England and Wales 8Scotland 9Northern Ireland 9Boiler types 13. 1Condensing boilers 1Regular boilers 2Combination boilers 2Range Cooker boilers 3Systems and components 14. 4Sealed and open-vented systems 4Domestic hot water 5Solar hot water systems 7Passive Flue-Gas Heat Recovery Devices (PFGHRD) 18Upgrading systems 8Flue types 9Heat emitters 1Circulator pumps 1Controls 25. 2Individual controls 2Selecting controls 6Further control improvements 7Central heating system Specifications 6. (CHeSS) 29Energy efficiency 37. 1Comparing boiler efficiencies 1The Standard Assessment Procedure 2Energy consumption and running costs 2Carbon dioxide emissions 3The Boiler Efficiency Database 4Saving energy with better controls 4System selection: practical issues 38.

4 Domestic heating by gas: boiler systems – guidance for installers and specifiers (2008 edition) Introduction to best practice 1.1 Boiler efficiency The efficiency of the boiler is the main factor in the overall efficiency of a domestic central heating system.

  System, Domestic, Heating, Domestic heating by gas