7.—(1) No manufacturer or his authorised representative established in the Community shall supply an appliance or a fitting which does not satisfy the essential requirements.
(2) No person shall supply an appliance which, when normally used, is not safe; and, in this paragraph, “normally used” in relation to use means use—
(a)when correctly installed and regularly serviced in accordance with the manufacturer’s instructions referred to in paragraph 1(2) of Annex 1 of the Directive (set out in Schedule 3);
(b)within the normal variations of gas quality and pressure; and
(c)in accordance with its intended purpose or in a way which can reasonably be foreseen.
(3) No person shall supply—
(a)an appliance to which the CE Marking has not been affixed; or
(b)a fitting without a fitting certificate which has been issued,
as required by these Regulations.