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
Heat exchangers - Guidelines to prepare installation, operating and maintenance instructions required to maintain the performance of each type of heat exchanger
Pumps - Rotodynamic pumps - Glandless circulators - Part 1: General requirements and procedures for testing and calculation of energy efficiency index (EEI)
Thermal solar systems and components - Custom built systems - Part 3: Performance test methods for solar water heater stores; German version EN 12977-3:2018— 59 стр.
Thermal solar systems and components - Custom built systems - Part 5: Performance test methods for control equipment; German version EN 12977-5:2018— 52 стр.
Thermal solar systems and components - Custom built systems - Part 4: Performance test methods for solar combistores; German version EN 12977-4:2018— 28 стр.
Thermal solar systems and components - Custom built systems - Part 2: Test methods for solar water heaters and combisystems; German version EN 12977-2:2018— 65 стр.
Thermal solar systems and components - Custom built systems - Part 1: General requirements for solar water heaters and combisystems; German version EN 12977-1:2018— 27 стр.