GENERAL GUIDANCE J O N L I N E V E R S I O N J 7. A chimney is a structure consisting of a wall or walls enclosing one or more flues (see Diagram 2). In the gas industry, the chimney for a gas appliance is commonly called the flue. 8. A combustion appliance (or appliance ) is an apparatus where fuel is burned to generate heat for space heating, water heating, cooking or other similar purpose. The appliance does not include systems to deliver fuel to it or for the distribution of heat. Typical combustion appliances are boilers, warm air heaters, water heaters, fires, stoves and cookers. 9.
The designation system in BS EN 1443:2003 expresses the performance characteristics of a chimney or its components, as assessed in accordance with an appropriate European product standard, by means of a code such as EN 1234 – T400 N1 D1 Gxx. Further information is given in Appendix G. 11 Approved Document J Combustion appliances and fuel storage systems O N L I N E V E R S I O N Diagram 2 Chimneys and flues Sleeve