insert
"type A gas appliance "means a gas appliance that is of a type approved under a corresponding law and that is not a type B gas appliance.
"type A gas appliance work"—see section 6B.
"type B gas appliance"—
(a) means a gas appliance that consumes gas at a rate of 10MJ/h or more and—
(i) is not approved under a corresponding law; or
(ii) is approved under a corresponding law but the proposed use of the appliance is outside of the use approved under the corresponding law; and
(b) includes any components and fittings of that appliance downstream of, and including, the appliance manual shut-off valve.
"type B gas appliance work"—see section 6C.
Part 5 Gas Safety Regulation 2001