Automatic electrical controls for household and similar use. Particular requirements for automatic electrical pressure sensing controls including mechanical requirements— 28 стр.
Heating systems in buildings. Method for calculation of system energy requirements and system efficiencies. Heat generation systems, thermal solar systems— 50 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.