Sch 1 para 3 Gas meters
(1) The essential requirements relating to gas meters intended for residential, commercial and light industrial use are— (a) the requirements of Annex I to the Directive; and (b) the specific requirements set out in Part I of Annex IV to the Directive subject to the modification in sub-paragraph (2). (2) The modification referred to in sub-paragraph (1)(b) is that point 10 of the specific requirements in Annex IV is to be read as follows— Putting into use (10) (a) The measurement of residential use must be performed by means of any Class 1.5 gas meter, or by Class 1.0 gas meters which have a Q max /Q min ratio equal to or greater than 150. (b) Measurement of commercial or light industrial use must be performed by any Class 1.0 or Class 1.5 gas meter. (c) The person responsible for installing a gas meter must have regard to the requirements under Points 1.2 and 1.3 of Part I of Annex IV and must ensure that the gas meter is appropriate for the accurate measurement of consumption that is foreseen or foreseeable. (3) The conformity assessment procedures specified in the modules in Annex II to the Directive applicable to gas meters are— (a) B and F; (b) B and D; or (c) H1.