The Gas Appliances (Safety) Regulations 1992 No. 711

SCHEDULE 3 ANNEX 1 OF COUNCIL DIRECTIVE OF 29TH JUNE 1990 ON THE APPROXIMATION OF THE LAWS OF MEMBER STATES RELATING TO APPLIANCES BURNING GASEOUS FUELS

3 DESIGN AND CONSTRUCTION

3.1.12  Levers and other controlling and setting devices must be clearly marked and give appropriate instructions so as to prevent any error in handling. Their design must be such as to preclude accidental manipulation.