District heating pipes. Preinsulated bonded pipe systems for directly buried hot water networks. Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene— 54 стр.
Heat exchangers. Guidelines for preparing installation, operating and maintenance instructions required to maintain the performance of each type of heat exchanger— 12 стр.
Pumps. Rotodynamic pumps. Circulation pumps having a rated power input not exceeding 200 W for heating installations and domestic hot water installations. Non-automatic circulation pumps, requirements, testing, marking— 20 стр.
Design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages Specification— 146 стр.
