THE GAS APPLIANCES DIRECTIVE 90/396
This Directive Shall Apply to:
"Appliances burning gaseous fuels used for cooking heating, hot water production, refrigeration, lighting or washing and having, where applicable, a normal water temperature not exceeding 105C hereinafter referred to as 'appliances'.
Forced draught burners and heating bodies to be equipped with such burners will also be considered as appliances,"
Appliances:
Safety devices. controlling devices or regulating devices and sub-assemblies. other than forced draught burners and heating bodies to be equipped with such burners separately marketed for trade use and designed to be incorporated into an appliance burning gaseous fuel or assembled to constitute such an appliance, hereinafter referred to as 'fittings'.
Appliances specifically designed for use in industrial processes carried out on industrial premises are excluded from the scope defined in paragraph 1.
For the purposes of this Directive, 'gaseous fuel' means any fuel which is in a gaseous state at a temperature of 15C under a pressure of 1 bar.
For the purposes of this Directive, an appliance is said to be 'normally used' when it is correctly installed and regularly serviced in accordance with the manufacturer's instructions, used with a normal variation in the gas quality and a normal fluctuation in the supply pressure, and used in accordance with its intended purpose or in a way that can be reasonably foreseen.
Compliance is by meeting the Essential Requirements. This can be achieved by applying and testing to the relevant harmonised standards to the Directive.