25. In this Part—
“flue pipe” means a pipe forming a flue but does not include a pipe built as a lining into either a chimney or a gas appliance ventilation duct;
“operating pressure”, in relation to a gas appliance, means the pressure of gas at which it is designed to operate.
Commencement Information
I1Reg. 25 in force at 3.10.1998, see reg. 1