S.L. 427.17 Art. 3Definitions.

For the purposes of these regulations, the definitions of the

Ecodesign Regulations as well as the following definitions shall apply:

"appliance" means the boiler body designed to have a burner fitted, or the burner designed to be fitted to a boiler body;

"average temperature of the boiler water" means the average of the water temperatures at the entry and exit of the boiler;

"back-boiler" means a boiler designed to supply a central-heating system and to be installed in a fireplace recess as part of a back boiler/gas fire combination; "boiler" means the combined boiler body-burner unit, designed to transmit to water the heat released from burning; "boiler to be installed in the living space" means a boiler with an effective rated output of less than 37 kW, designed to provide heat to the part of the living space in which it is installed by means of the emission of heat from the casing having an open expansion chamber, supplying hot water using gravity circulation; such boilers shall bear on their casings the explicit indication that they

*L.N. 52 of 1996 : Appliances Burning Gaseous Fuels, implementing Directive 90/ 396/EEC (OJ No. L 196, 26.07.90, p. 15-29). [

must be installed in living space; "effective rated output (expressed in kW)" means the maximum calorific output laid down and guaranteed by the manufacturer as being deliverable during continuous operation while complying with the useful efficiency indicated by the manufacturer;

"gas condensing boiler" means a boiler designed to condense permanently a large part of the water vapour contained in the combustion gases; "low-temperature boiler" means a boiler which can work continuously with a water supply temperature of 35 to 40°C, possibly producing condensation in certain circumstances, including condensing boilers using liquid fuel; "part load (expressed in %)" means the ratio between the effective output of a boiler operating intermittently or at an output lower than the effective rated output and the same effective rated output; "standard boiler" means a boiler for which the average water temperature can be restricted by design; "useful efficiency (expressed in %)" means the ratio between the heat output transmitted to the boiler water and the product of the net calorific value at constant fuel pressure and the consumption expressed as a quantity of fuel per unit time.